UNITED STATES DEPARTMENT OF THE INTERIOR PRELIMINARY ... · north carolina. . md 3.0 (teic). felt at spruce pine. felt in parts af mitchell and yancey counties. banda

UNITED STATES DEPARTMENT OF THE INTERIOR

GEOLOGICAL SURVEY

PRELIMINARY DETERMINATION OF EPICENTERS MONTHLY LISTING

JANUARY - MARCH 1993

NATIONAL EARTHQUAKE INFORMATION CENTER

Open File Report

93-600-A

This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards.

1993

MONTHLY LISTING

I.S. DEPARTMENT OF THE INTERIOR /GEOLOGICAL SURVEYNational Earthquake Information Center

JANUARY 1993

DAY

01ei ei ei ei 01

01 ei 01

ei

01 ei ei ei

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01010101

02020202020202020202

ORIGIN TIME UTC

HR MN

01 3502 0102 0902 3302 5402 5603 4604 0204 1204 1804 3004 3405 0005 08

05 1905 3505 3605 4005 4305 4806 0706 2407 3008 1908 2608 5809 1709 56

10 0610 5612 3512 4813 091 4 2514 5515 5716 1117 2918 4619 1620 4921 0021 2621 3621 4623 4901 0701 4801 5702 3202 3903 0903 4204 0404 5505 45

GEOGRAPHIC COORDINATES

SEC LAT

4925260742393339281908551705

07275551394042591241295026.27

40.24.3214.06.02.2641 .15.5913.1641 .085138.21 .47.28.401238.47 .19.3958.06.38.

.4% 39

.3% 39

.1* 35

.6* 3

.7 35

.9% 26

.9* 31

.5? 31

. 9& 60

.5? 39

.4* 53

.8* 31

.2? 7.3& 35

.1 6

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.7? 36

.8? 43.

.9% 44.

.6? 27

.9. 19.8* 6

.755 39

.e. 386? 32..4 6 ..7* 32..2 31 .

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.298

.260

.712

.834

. 196

.386

.926

.73

.224

.56

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.206, 13.877

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DEPTH

LONG

28284

126111271786815221

15717812882

13015

11367

17664

147281421751436971

71 ,131.177.179.177.27.

148.112.19.68.13.7.

26.4 .

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176.28.75.28.80.69.49.

177.121 .67.

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MAGNITUDES SD GS

MB Msz

43

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0.50.71 .30.91 00.9

0.70.90.31 .20.30.61 .31 . 11 .00.60.50.30.81 .20.61 .30.50.81 . 41 .00 5

NO. STAUSED

56

1012106

245

616

19125

22

356948

101 1207

1713599

99

105

3131

2035

489

185

4754

409

57132716109488

2815156

ML 2.4 (LOG).

REGION, CONTRIBUTED MAGNITUDES AND COMMENTS

TURKEY . MD 2.7 ( I SK) .TURKEY. MD 2.8 ( ISK) .STRAIT OF GIBRALTAR. mbLg 2.9 (MOD).TALAUD ISLANDS, INDONESIASOUTHEASTERN CHINA. ML 4.2 (BJI).REPUBLIC OF SOUTH AFRICA. ML 2.5 (PRE).KERMADEC ISLANDS REGIONSAN JUAN PROVINCE. ARGENTINASOUTHERN ALASKA. <AEIC>. ML 3.1 (AEIC).GREECEKAMCHATKAKERMADEC ISLANDS REGIONBANDA SEANORTH CAROLINA. <TEIC>. MD 3.0 (TEIC). Felt at SprucePine. Felt in parts af Mitchell and Yancey Counties.BANDA SEASICI LYGULF OF CALIFORNIANEAR SOUTH COAST OF FRANCE.NORTHERN ITALYKERMADEC ISLANDS REGIONVIRGIN ISLANDSEASTERN NEW GUINEA REG., P.N.G.TURKEY. MD 2.8 ( ISK) .NEAR EAST COAST OF HONSHU, JAPANSOUTH OF KERMADEC ISLANDSNEW GUINEA, PAPUA NEW GUINEAMENDOZA PROVINCE. ARGENTINA.NEAR COAST OF CENTRAL CHILE.(SAN).CENTRAL CHILE. MD 4.0 (SAN).TANIMBAR ISLANDS REG., INDONESIANORTH ISLAND, NEW ZEALANDOFF E. COAST OF N. ISLAND, N.Z.SOUTH OF F I J I I SLANDSTURKEY. MD 3. 1 ( ISK) .CENTRAL ALASKA. <AEIC>. ML 2.8 (AEIC).MONTANA. ML 3.3 (GS), 3.4 (BUT).ALBANIA. ML 2.7 (TlR), 2.7 (TTG).SAN JUAN PROVINCE, ARGENTINASOUTHERN ITALY. ML 3.8 (TTG). MD 3.7 (TRI), 3.5 (LJU).NORTHERN ITALY. ML 2.0 (GEN).AEGEAN SEA. MD 3 . 1 ( ISK) .NEAR SOUTH COAST OF FRANCE. ML 3.6 (LOG).CELEBES SEABALLENY ISLANDS REGION. Mw 5.6 (HRV).CYPRUS REGION. ML 3.4 (CSS). Felt (II) at Limassal.MYANMAR- IND I A BORDER REGIONNORTH ISLAND, NEW ZEALANDTURKEY. MD 3.1 ( ISK) .NORTHERN COLOMBIA. MD 4.5 (UPA).TURKEY. MD 2.6 ( ISK) .SOUTH OF PANAMA. MD 4.3 (UPA).CHILE-ARGENTINA BORDER REGIONWESTERN IRAN. Felt at Izeh.KERMADEC ISLANDS. NEW ZEALANDSAVU SEAMONA PASSAGE

MD 3.5 (SAN). Mw 5.3 (HRV). MD 5.2

Annual Subscriptions: Superintendent of Documents. U S. Government Printing Office, Washington, D.C. 20402. Bacl< issues. Books and Open-File Reports Section, U S. Geological Survey, Box 25425, Denver. CO 80225.

JAN 1993 PAGE

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PUERTO RICO REGIONCHILE-ARGENTINA BORDER REGION. MD 3.1 (SAN).SOUTHEAST INDIAN RIDGE. Mw 5.5 (HRV).YELLOWSTONE REGION, WYOMING. ML 3.1 (GS), 3.5 (BUT).PANAMA-COSTA RICA BORDER REGION. MD 3.8 (UPA). Felt atBacas del Tara, Panama.KENAI PENINSULA, ALASKA. <AEIC>. ML 2.5 (AEIC).NEAR SOUTH COAST OF FRANCE. ML 2.2 (LOG).NORTHERN IRAN. Felt in the Mamasani area.CENTRAL ALASKA. <AEIC>.BANDA SEASOUTHERN ALASKA. <AEIC>.FLORES REGION, INDONESIANORTH ISLAND. NEW ZEALANDNEAR COAST OF CENTRAL CHILE. MD 4.2 (SAN).NORTH ISLAND, NEW ZEALANDNEAR COAST OF CENTRAL CHILE. MD 3.3 (SAN).NEAR COAST OF CENTRAL CHILE. MD 3.4 (SAN).NEAR COAST OF NORTHERN CALIF. <GM-P>. MD 3.1 (GM).NEPALNEAR COAST OF CENTRAL CHILE. MD 3.1 (SAN).OFF EAST COAST OF HONSHU, JAPANNEAR COAST OF CENTRAL CHILE. MD 3.5 (SAN).SOUTHERN GREECE. ML 3.3 (ATM).LA RIOJA PROVINCE, ARGENTINANEW BRITAIN REGION, P.N.G.BANDA SEANORTH ISLAND, NEW ZEALANDFRANCE. ML 1.9 (LOG).GREECEOINGHAI, CHINA. ML 4.4 (BJI).GUERRERO, MEXICOREPUBLIC OF SOUTH AFRICA. ML 2.8 (PRE).REPUBLIC OF SOUTH AFRICA. ML 2.3 (PRE).

MD 3.9 (SAN). ML 2.8 (PAS) (HRV).

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ML 4.3 (ATM), 3.9 (TIR).

SAN JUAN PROVINCE, ARGENTINASOUTHERN CALIFORNIA. <PAS-P>SULAWESI, INDONESIA. Mw 5.7FLORES REGION. INDONESIANORTH ATLANTIC OCEANGREECE-ALBANIA BORDER REGIONNORTH ATLANTIC OCEANGERMANYNEAR COAST OF CENTRAL CHILE. MD 3.5 (SAN).NEW BRITAIN REGION, P.N.G.NORTHWEST OF KURIL ISLANDSOFF COAST OF OREGONCHILE-BOLIVIA BORDER REGIONNORTH ISLAND, NEW ZEALAND. ML 3.8 (WEL).SOUTHERN CALIFORNIA. <PAS-P>. ML 2.9 (PAS).SOUTHERN CALIFORNIA. <PAS-P>. ML 3.0 (PAS).CATAMARCA PROVINCE, ARGENTINACENTRAL ALASKA. <AEIC>.SOUTHERN IRANBANDA SEA. Mw 5.8 (HRV).BANDA SEABANDA SEAOFF COAST OF CENTRAL CHILE. MD 3.4 (SAN).NORTHERN MOLUCCA SEABANDA SEAJUJUY PROVINCE, ARGENTINALA RIOJA PROVINCE, ARGENTINASOUTHERN CALIFORNIA. <PAS-P>. ML 3.8 (PAS), 3.5 (GS).Felt in the epicentral area.OFF EAST COAST OF HONSHU, JAPANNORTH OF HALMAHERA, INDONESIA. Mw 5.9 (HRV).KURIL ISLANDSSAN JUAN PROVINCE, ARGENTINA. MD 4.1 (SAN).NEAR COAST OF CENTRAL CHILEVIRGIN ISLANDSCOSTA RICA. MD 4.5 (UPA). Felt at David, Panama.SOUTHERN CALIFORNIA. <PAS-P>. ML 2.6 (PAS).COSTA RICA. MD 4.6 (UPA). Felt at David, Panama.VIRGIN ISLANDSGREECE-ALBANIA BORDER REGIONNORTHERN ITALY. ML 1.8 (GEN).FIJI ISLANDS REGIONCENTRAL ALASKA. <AEIC>.NEAR COAST OF CENTRAL CHILE. MD 4.0 (SAN).TONGA ISLANDS REGIONGULF OF ALASKA. <AEIC>. ML 3.5 (AEIC).NEAR COAST OF CENTRAL CHILE. MD 3.2 (SAN).TONGA ISLANDSOFF EAST COAST OF HONSHU, JAPANSTRAIT OF GIBRALTAR. mbLg 3.5 (MOD). Felt (IV) in theAlmeria area, Spain.SOUTHERN SUMATERA, INDONESIA.CHILE-ARGENTINA BORDER REGIONBANDA SEA. Mw 5.2 (HRV).GUERRERO, MEXICOBANDA SEAVIRGIN ISLANDSGREECECHILE-BOLIVIA BORDER REGION

Fe I t (III) at Kapahi ang. MD 3.8 (SAN).

PAGE JAN 1993

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AEGEAN SEAREPUBLIC OF SOUTH AFRICAPOLAND. ML 3.2 (VIE).KENAI PENINSULA, ALASKA. <AEIC>TURKEY. MD 3.0 (ISK).PUERTO RICO REGIONPUERTO RICO REGIONSAN JUAN PROVINCE, ARGENTINATURKEY. MD 2.7 (ISK).NEAR COAST OF CHIAPAS, MEXICOTURKMENISTAN-IRAN BORDER REGIONSh i rvan, Iran.CHIAPAS, MEXICONEAR COAST OF VENEZUELA. MD 3.3 (TRN)AEGEAN SEAREPUBLIC OF SOUTH AFRICA.FRANCE. ML 2.7 (LOG).WESTERN MEDITERRANEAN SEALOYALTY ISLANDS REGIONCENTRAL ITALYOFF E. COAST OF N. ISLAND, N.Z.NEAR COAST OF NORTHERN CHILESOUTHERN IRAN. Mw 5.4 (HRV). Severe damage in theFiruzabad-Dadenjan area.NEAR COAST OF NICARAGUATURKEY. MD 2.7 (ISK).VIRGIN ISLANDSAEGEAN SEANORTH ISLAND. NEW ZEALANDKENAI PENINSULA. ALASKA. <AEIC>. ML 3.1 (PMR), 2.8(AEIC).REPUBLIC OF SOUTH AFRICA. ML 3.0 (PRE). mbLg 2.9 (BUL)NORTHERN CALIFORNIA. <BRK>. ML 3.0 (BRK).GREECE. ML 3.7 (TIR). MD 3.7 (ATH).ALASKA PENINSULA. <AEIC>. ML 2.8 (AEIC).CHILE-ARGENTINA BORDER REGIONBANDA SEANORTH OF ASCENSION ISLAND. Mw 5.7 (HRV).FLORES REGION, INDONESIANEAR COAST OF CHIAPAS, MEXICONEAR COAST OF NORTHERN CALIF. <BRK>(GS).IRAN-IRAQ BORDER REGIONAEGEAN SEATURKEY. Felt ot Errurum and Kors.SPAIN. mbLg 2 9 (MOD).NORTHWESTERN BALKAN REGION. ML 2.4 (TTG)SOUTH OF KERMADEC ISLANDS. Mw 5.6 (HRV).SOUTH OF KERMADEC ISLANDS. Mw 5.6 (HRV).BULGARIASOUTH OF KERMADEC ISLANDSNEAR COAST OF CHIAPAS, MEXICOAEGEAN SEA. MD 3.5 (ISK).PYRENEES. ML 3.2 (LOG).OFF COAST OF NORTHERN PERUTURKEY. MD 3.1 (ISK).SWITZERLAND. ML 2.7 (VIE)SWITZERLAND. ML 2.3 (LOG)SOUTH OF KERMADEC ISLANDSSOUTH OF FIJI ISLANDS Mw 5.5 (HRV).SOUTH OF KERMADEC ISLANDSKERMADEC ISLANDS REGIONSOUTH OF KERMADEC ISLANDSGERMANY. MD 2 8 (UCC)OFF COAST OF CENTRAL CHILE. MD 4.3 (SAN).GERMANY. MD 3 3 (UCC)NEAR COAST OF CENTRAL CHILEPOLAND. MG 2.8 (WAR).WASHINGTON. <SEA-P>. MD 3.4 (SEA)and (III) at Index and Skykomish.Bar, North Bend ond Sultan.CENTRAL ALASKA. <AEIC>.GREECEPERU-ECUADOR BORDER REGIONSPAIN. mbLg 3.2 (MOD).EL SALVADOR. Felt (III) at San Salvador.NORTHWESTERN BALKAN REGION. ML 1.4 (TTG).OAXACA, MEXICOSOUTHERN ALASKA. <AEIC>. ML 2.7 (AEIC).NEAR COAST OF CENTRAL CHILE. MD 3.7 (SAN).NORTHERN MOLUCCA SEAMOROCCO. MD 3.9 (RBA).REPUBLIC OF SOUTH AFRICA. ML 2.1 (PRE).REPUBLIC OF SOUTH AFRICA. ML 2.8 (PRE).JAWA, INDONESIANORTHERN CHILEVANCOUVER ISLAND REGION. <PGC-P>REPUBLIC OF SOUTH AFRICA. ML 3.2 (PRE)JUJUY PROVINCE, ARGENTINASOUTH OF KERMADEC ISLANDSCENTRAL MID-ATLANTIC RIDGECHILE-ARGENTINA BORDER REGIONKERMADEC ISLANDS REGION

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PAGE 5 JAN 1993

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P.N.G.

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2.9 (ISK)ML 3.9 (BJI). INDONESIA

TURKEY MDSICHUAN, CHINAFLORES REGION,GREENLAND SEAKURIL ISLANDSREPUBLIC OF SOUTH AFRICA.AEGEAN SEAKERMADEC ISLANDS, NEW ZEALANDIsI and.SEA OF OKHOTSKNEAR COAST OF PERUCHILE-ARGENTINA BORDER REGIONVANUATU ISLANDSX IZANG. ML 3.4 (BJ I ) .NORTHERN ITALY. ML 2.0 (GEN).SOUTHERN BOLIVIAFRANCE. ML 1.5 (GEN).GERMANYDODECANESE ISLANDS. MD 3.0 (ISK).CENTRAL CALIFORNIA. <PAS-P>. ML 2.6

ML 3.0 (PRE).

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MD 3.9 (SAN).

(PAS)NORTHERN ALASKA. <AEIC>. ML 3.4 (AEIC).NEAR EAST COAST OF HONSHU. JAPANCENTRAL CALIFORNIA. <PAS-P>. ML 2.7 (PAS), 2.5 (GS).SOUTHERN ITALYNEAR COAST OF PERUNEAR COAST OF CENTRAL CHILE. MD 3.9 (SAN).GREECE. ML 4.0 (TTGjDOMINICAN REPUBLIC REGION MD 4.8 (SDD). Felt otSantiago and in the Santo Domingo-San Cristobal area.FLORES REGION, INDONESIACALIFORNIA-NEVADA BORDER REGION <GM-P>. MD 2.9 (GM).OFF E. COAST OF N. ISLAND, N.Z.NEAR COAST OF NORTHERN CALIF. <BRK>. ML 3.6 (BRK).SAN JUAN PROVINCE, ARGENTINASOUTHERN ALASKA. <AEIC>.SOUTH OF KERMADEC ISLANDS. Mw 5.5 (HRV).LA RIOJA PROVINCE, ARGENTINABANDA SEASOUTHERN ALASKA. <AElC>.CYPRUS REGION. ML 3.6 (CSS). MD 4.0 (HLW). Felt (III)at L imassoI .TRINIDAD. MD 2.5 (TRN).PYRENEES. ML 3.1 (LDG).NORTHWESTERN BALKAN REGIONNORTHWESTERN BALKAN REGION. ML 1.6 (TTG).SOUTHERN ALASKA. <AEIC>. ML 3.1 (AEIC), 3.0 (PMR).EASTERN MEDITERRANEAN SEA. MD 5.1 (ATH). Felt on Rodhosand nearby islands, Greece. Also felt at Denizli,Tur key.HINDU KUSH REGION, AFGHANISTANGREECEWESTERN ARABIAN PENINSULA. MD 4.5 (ARO). Some damage inthe Sodah area, Yemen.

JAN 1993 PAGE 6

09 18 05 47.94 56 348 N 120.725 W 5 G 12 BRITISH COLUMBIA. CANADA. <PGC-P>. ML 3.9 (PGC). Felt(V) north of Fort St. John; (IV) ot Fort St John. Cecil Loke ond Chorlie Lake; (III) ot Montney; (II) ot North Pine ond Rose Proirie. Also felt at Toylor.

09 18 18 55.1» 3.491 S 151.176 E 16 D 4.8 1.3 22 NEW IRELAND REGION, P.N.G.09 19 31 02.64 56.385 N 120.722 W 5 G 5 BRITISH COLUMBIA, CANADA. <PGC-P>. ML 3.6 (PGC). Felt

in the Fort St. John oreo.09 21 16 04.9* 56.344 N 120.694 W 5 G 5 BRITISH COLUMBIA, CANADA. <PGC-P>. ML 3.8 (PGC). Felt

in the Fort St. John orea.09 21 49 28.1» 59.667 S 26.271 W 33 N 4.9 4.0 0.9 14 SOUTH SANDWICH ISLANDS REGION09 22 15 52.47. 38.055 N 14.197 E 5 G 1.3 5 SICILY09 23 05 13.2 37.694 N 20.374 E 10 G 4.3 1.4 98 IONIAN SEA. ML 4.4 (TTG). 4.3 (ATH). MD 3.9 (HLW).10 00 09 35.6% 38 807 N 26.900 E 10 G 0.5 7 AEGEAN SEA. MD 3.3 (ISK).10 0e 52 20 0» 32 583 S 71.595 W 10 G 0.8 12 NEAR COAST OF CENTRAL CHILE. MD 4.0 (SAN).10 02 57 40.7? 36.19 N 29.78 E 10 G 0.3 5 TURKEY. MD 3.4 (ISK).10 03 30 11.2* 38.020 N 118.734 W 1 18 CALIFORNIA-NEVADA BORDER REGION <GM-P>. MD 2.7 (GM)10 04 12 35.5* 32.029 N 142.205 E 33 N 4.7 0.7 12 SOUTH OF HONSHU, JAPAN10 04 37 03.8% 43.236 N 20.025 E 10 G ' 0.2 6 NORTHWESTERN BALKAN REGION. ML 1.3 (TTG).10 04 38 51 2* 37.137 N 121.520 W 5 16 CENTRAL CALIFORNIA. <BRK>. ML 2.7 (BRK).10 05 00 26.2% 45.895 N 14.843 E 10 G 035 NORTHWESTERN BALKAN REGION. MD 2.5 (LJU). Felt (IV) ot

VeI iko Loka, Slovenia. 10 05 37 25.4* 38.027 N 118.734 W 2 14 CALIFORNIA-NEVADA BORDER REGION. <GM-P>. MD 2.9 (GM).

ML 3.3 (BRK).10 05 38 56.6* 36.545 N 121.178 W 9 19 CENTRAL CALIFORNIA. <BRK>. ML 3.0 (BRK).10 06 05 50.44 66.691 N 147.634 W 0 19 NORTHERN ALASKA. <AEIC>. ML 3.2 (PMR), 3.0 (AEIC).10 07 20 02.9* 9.587 S 113.678 E 33 N 4.2 0.7 6 SOUTH OF JAWA, INDONESIA10 10 37 21.8 44.309 N 11.855 E 10 G 0.8 16 NORTHERN ITALY. ML 2.6 (LDG). MD 3.1 (LJU), 2.8 (FIR).10 10 53 59.6* 34.610 N 116.677 W 8 5 SOUTHERN CALIFORNIA. <PAS-P>. ML 2.7 (PAS).10 11 09 21.3? 11.23 N 60.57 W 33 N 0.5 7 WINDWARD ISLANDS. MD 3.2 (TRN).10 11 44 49.9? 29.93 S 69.61 W 150 ? 0.9 8 CHILE-ARGENTINA BORDER REGION10 12 54 19.5% 38.588 N 14.583 E 10 G 0.8 9 SICILY10 13 02 23.1% 38.565 N 14.528 E 10 G 0.8 9 SICILY10 13 40 31.9* 63.195 N 151.449 W 11 2.6 56 CENTRAL ALASKA. <AEIC>. ML 3.1 (PMR), 2.7 (AEIC).10 13 45 24.7? 11.32 N 60.09 W 33 N 3.6 1.0 6 WINDWARD ISLANDS. MD 3.4 (TRN).10 13 52 06.7% 43.880 N 11.970 E 10 G 0.9 6 CENTRAL ITALY10 14 09 07.8? 39.09 N 27.60 E 10 G 0.2 4 TURKEY. MD 2.6 (ISK).10 14 34 19.6? 42.54 N 11.61 E 10 G 0.4 6 CENTRAL ITALY

f 10 14 39 00.3 59.274 S 26.205 W 61 G 6.3 1.0 284 SOUTH SANDWICH ISLANDS REGION. Mw 6.7 (GS), 6.7 (HRV).Mo-1.6*10»»19 Nm (PPT). Depth from broadbanddisplacement seismogroms.

10 15 37 41.5% 38.575 N 14.485 E 10 G 0.7 8 SICILY10 15 40 05.3? 38.67 N 14.39 E 10 G 0.8 6 SICILY10 16 23 42.3* 37.343 N 121.698 W 9 23 CENTRAL CALIFORNIA. <BRK>. ML 2.8 (BRK).10 16 43 28.7% 48.582 N 6.220 E 10 G 0.9 8 FRANCE. ML 2.3 (LDG).10 16 43 59.5 27.895 S 72.234 W 33 N 5 3 1.3 89 OFF COAST OF NORTHERN CHILE10 17 41 52.9? 11.19 N 61.98 W 70 G 064 WINDWARD ISLANDS. MD 2.5 (TRN).10 17 44 07.8? 39.26 N 28.67 E 10 G 0.5 4 TURKEY. MD 2.7 (ISK).10 18 04 03.5 38.145 N 23.024 E 12 0.9 12 GREECE. ML 3.3 (ATH).10 18 07 57.0* 33.744 S 57.211 E 10 G 5.0 1.4 22 SOUTHWEST INDIAN RIDGE10 18 33 33.3% 44.151 N 11.900 E 10 G 0.6 6 NORTHERN ITALY10 18 39 40.0% 31.633 S 67.930 W 15 0.2 7 SAN JUAN PROVINCE, ARGENTINA10 19 27 21.7 38.395 N 21.852 E 10 G 0 8 12 GREECE MD 3.3 (ATH).10 19 35 52.4% 33.697 S 71.312 W 51 ? 0.2 11 NEAR COAST OF CENTRAL CHILE10 20 32 04.7 44.840 N 6.790 E 10 G 0.4 8 FRANCE. ML 2.3 (LDG).10 20 51 43.5? 0.59 N 125.37 E 106 4.8 0.8 7 NORTHERN MOLUCCA SEA10 22 48 17.3» 51.259 N 15.714 E 5 G 1.1 12 POLAND. ML 3.6 (VIE).

O 10 22 58 19.6 5.500 N 82.564 W 10 G 5.1 4.7 1.0 116 SOUTH OF PANAMA. Mw 5 5 (HRV). MD 4.6 (UPA).10 23 16 42.7* 46.473 N 122.280 W 17 29 WASHINGTON. <SEA-P>. MD 2.0 (SEA).11 00 12 33.6 45.209 N 7.465 E 10 G 0.9 29 NORTHERN ITALY. ML 2.8 (LDG). 2.5 (GEN).11 00 58 47.7» 35.003 N 137.137 E 33 N 4.5 1.5 10 EASTERN HONSHU, JAPAN11 01 59 56.1? 27.55 S 73.06 W 33 N 3.9 1.7 12 OFF COAST OF NORTHERN CHILE11 02 39 08.3* 23.086 N 142.322 E 33 N 4.6 1.1 8 VOLCANO ISLANDS REGION11 02 56 25.9» 38.125 N 20.361 E 10 G 1.4 20 GREECE. MD 3.5 (ATH).11 03 02 08.1* 34.092 N 116.382 W 0 6 SOUTHERN CALIFORNIA. <PAS-P>. ML 2.9 (PAS), 2.8 (GS).

Fe I t .11 03 14 44.4? 5.42 S 150.59 E 33 N 4.3 1.4 4 NEW BRITAIN REGION, P.N.G.11 03 16 C9 5* 46 204 N 16 483 E 10 G 1.2 7 NORTHWESTERN BALKAN REGION. MD 3.1 (LJU). ML 2.7 (ZAG).

Felt (IV) at Ludbreg, Reko ond Subotica, Croatia1 03 53 54.7» 3.000 N 128.373 E 33 N 4.6 1.3 10 NORTH OF HALMAHERA, INDONESIA1 04 15 27.5% 26.400 S 27.392 E 5 G 0.8 9 REPUBLIC OF SOUTH AFRICA. ML 2.6 (PRE).1 04 40 44 0% 40 635 N 22.500 E 10 G 0.4 6 GREECE

04 47 00.2? 30 56 S 68.82 W 10 G 1.0 5 SAN JUAN PROVINCE, ARGENTINA05 51 29.1* 34.391 N 116.462 W 3 8 SOUTHERN CALIFORNIA. <PAS-P>. ML 3.0 (PAS). Felt.07 03 48.2 22.159 S 176.562 W 168 D 5.2 1.2 82 SOUTH OF FIJI ISLANDS. Mw 5.1 (HRV).07 35 27.3? 43.05 N 18.73 E 10 G 0.2 5 NORTHWESTERN BALKAN REGION. ML 1.3 (TTG).07 54 16.3 18.423 N 145.242 E 471 4.8 0.9 86 MARIANA ISLANDS07 56 59.8 18 333 N 145.172 E 489 4.4 0.8 41 MARIANA ISLANDS

11 08 22 47.2* 10.527 N 85.134 W 32 D 4.2 1.2 10 COSTA RICA. MD 4.4 (UPA).11 08 42 27.1* 5.483 S 147.149 E 188 4.8 0.8 11 EASTERN NEW GUINEA REG., P.N.G.11 08 57 38.2? 33.16 S 178.62 E 33 N 1.6 7 SOUTH OF KERMADEC ISLANDS11 09 30 07.1? 6.45 S 130.55 E 78 ? 4.5 0.7 8 BANDA SEA11 09 33 38.0% 39.124 N 27.585 E 5 G 0.5 5 TURKEY. MD 2.8 (ISK).11 09 42 54.0 40.486 N 21.859 E 10 G 0.6 7 GREECE11 09 50 15 2* 17.140 N 100.519 W 33 N 3.9 1.2 6 GUERRERO, MEXICO. Felt in Guerrero.

1 10 49 11.2* 20.737 S 69.537 W 93 D 4.8 1.7 18 NORTHERN CHILE11 33 52.3 35.998 N 31.160 E 66 4.2 1.1 54 CYPRUS REGION. MD 4.0 (HLW), 4.0 (ISK).11 40 50.6? 39.13 N 27.51 E 10 G 0.2 4 TURKEY. MD 2.6 (iSK).13 08 26.5? 39.12 N 27.60 E 10 G 0.1 4 TURKEY. MD 2.7 (ISK).13 11 53.0* 32 655 S 71.712 W 33 N 1.3 13 NEAR COAST OF CENTRAL CHILE. MD 4.2 (SAN).

I 13 30 24.4* 38.034 N 118.737 W 0 22 CALIFORNIA-NEVADA BORDER REGION. <GM-P>. MD 3.2 (GM).ML 3 4 (BRK).

II 13 32 36 2* 38.028 N 118.728 W 7 25 CALIFORNIA-NEVADA BORDER REGION. <GM-P>. MD 3.6 (GM).ML 3.8 (BRK).

PAGE JAN 1993

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JAN 1993 PAGE 8

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MENDOZ;VIRGINMINDAN,SOUTH !SAN JU.SOUTHEINORTH ICENTRASOUTHEIFel t .GUATEM/REPUBLSOUTHEISOUTHNEAR ClSAN JU,CHI LE-/REPUBLRUSSIA-NORTHWIPOLANDCENTRAAFGHANSAN JU,JAMAIC,One peor eo . IOFF CO/CENTRAOFF E.NORTHEISOUTH <about .d i sp I aiJAMAI Ciarea .OFF CO-VIRGINSICILYVIRGINVIRGINVIRGINAEGEANREPUBLVI RGINVIRGINVIRGINFRANCEGREECE-NEAR C(JAMAIC;Bar bi c<JAMAIC/VIRGINJAMAI C/K i n g s t <VIRGINVANUATlSOUTH (SANTA ISAN JU/BANDA !JAMAI C/Garden:WESTERINORTHEfREPUBLNORTHEINORTHEIALBANI-NORTHWi3.6 (L,REPUBLTONGAVI RGINBANDA !NEAR C(ALBANUGREECECHI APA!S I C I LYJAMAIOVIRGINOFF CO*GERMANSLA RIO*CENTRA!GREECE-OFF CO'FLORESNORTHEFVOLCANCTURKEY

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MENDOZA PROVINCE, ARGENTINA. MD 4 0 (SAN).ISLANDS

MINDANAO, PHILIPPINE ISLANDSICH ISLANDS REGION

SAN JUAN PROVINCE, ARGENTINAALIFORNIA. <PAS-P>. ML 3.0 (PAS), 2.8 ( GS ) . ALMAHERA, INDONESIA

CENTRAL CALIFORNIA. <PAS-P> . ML 2.9 (PAS). SOUTHERN CALIFORNIA. <PAS-P> . ML 3.0 (PAS), 2.8 ( GS ) . Fel t . GUATEMALA REPUBLIC OF SOUTH AFRICA

RN ALASKA. <AE I C> . ML 2. ISLAND, NEW ZEALAND. ML

NEAR COAST OF NORTHERN CHILE SAN JUAN PROVINCE, ARGENTINA CHILE-ARGENTINA BORDER REGION.

F SOUTH AFRICA. ML 2.4 (PRE). RUSSIA-MONGOLIA BORDER REGION NORTHWESTERN BALKAN REGION. ML 1.5 (TTG).

3.2 (WAR) .CENTRAL CALIFORNIA. <BRK> . ML 2.7 (BRK), 2.7 (PAS). AFGHANISTAN-TAJIKISTAN BORD REG. SAN JUAN PROVINCE, ARGENTINA

GION. Mw 5.5 (HRV). MD 5.7 (UPA). 5.4 ( HOJ ) . One person killed ond some damage (VII) in the Kingston oreo. Felt strongly throughout much of Jamaica. OFF COAST OF CENTRAL CHILE. MD 3.8 (SAN).

ALASKA. <AE I C> . COAST OF N. ISLAND, N.Z. N CHILEF AUSTRALIA. Mw 6.3 (GS), 6.3 (HRV). Two events

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REGION. MD 3.1 (HOJ). Felt (IV) in the Kingston

ST OF OAXACA, MEXICO ISLANDS

ISLANDS ISLANDS ISLANDS SEAC OF SO ISLANDS ISLANDS ISLANDS ML 2.6 (LOG) .

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F PANAMA. RUZ ISLANDS

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IRANIRAN. Felt at Behbahan. OF SOUTH AFRICA. ML 2.6 (PRE). ITALY. ML 1.5 (GEN). IRAN. Felt at Oaen. ML 2.5 (TIR) .

NORTHWESTERN BALKAN REGION. MD 4.1 (TRI), 3.7 (TTG), JU).IC OF SOUTH AFRICA. ML 3.2 (PRE). mbLg 3.1 (BUL). ISLANDS REGIONISLANDS

SEAAST OF ECUADOR

A. ML 2. 1 (TIR).

S, MEXIC

REGION. ISLANDS

AST OF CALIFORNIY . MD 2 . 5 (UCC) .

LA RIOJA PROVINCE, ARGENTINASKA. <AE I C> . ML 2.5 (AEIC).

GREECE-BULGARIA BORDER REGION. OFF COAST OF CENTRAL CHILE. MD

EGION, INDONESIAITALY. ML 1.8 (GEN).

ISLANDS REGION MD 4.6 (HLW). 4.3 ( I SK ) . ML 4.3 (CSS). Felt

2 2 (HOJ)

MD 2.3 (HOJ).

MD 2.1 (HOJ)

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Fel t (III) at Borbican.

Felt (III) in the

Felt (III) at Cher ry

MD 2.4 (HOJ). Felt at Kingston.

LIFORNIA. <PAS-P> . ML 3.1 (PAS).

ML 2.0 (SKO) 3.6 (SAN).

PAGE 9 JAN 1993

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the Mug Io oreo.LEEWARD ISLANDSKYRGYZSTANOKLAHOMA. <TUL>. mbLg 3.1 (TUL), 3.1 (GS). Felt (IV) otJet ond Wokito. Felt (III) ot Cherokee, Docomo, Helenoand Nosh.NORTHWESTERN BALKAN REGION. MD 2.6 (TTG). ML 2.3 (TIR).NORTHWESTERN BALKAN REGION. ML 1.7 (TTG).GREECE-BULGARIA BORDER REGIONREPUBLIC OF SOUTH AFRICA. ML 3.1 (PRE).GREECE. MD 2.4 (TIR).GREECE. ML 1.5 (SKO).SOUTH ISLAND, NEW ZEALAND. ML 3.7 (WEL).VIRGIN ISLANDSVIRGIN ISLANDSTALAUD ISLANDS, INDONESIATAJIKISTANNEAR EAST COAST OF KAMCHATKANORTHERN CHILETONGA ISLANDSNORTHERN ITALY. ML 1.5 (GEN).SOUTHWEST OF SUMATERA, INDONESIAREPUBLIC OF SOUTH AFRICA. ML 2.4 (PRE).SOUTHERN ALASKA. <AEIC>. ML 2.9 (AEIC).TENNESSEE. <TEIC>. MD 3.2 (TEIC). mbLg 3.1 (GS). Felt(IV) ot McDonald ond (Ml) ot Apison, Colhoun,Chattanooga, Callegedale, Ooltewah and Varnell. Felt inthe Cleveland ond Etowoh areas. Also felt in ports ofnorthern Georgia.BONIN ISLANDS REGIONSUMBA REGION, INDONESIAOFF W. COAST OF S. ISLAND, N.MARIANA ISLANDS REGIONSOUTHERN CALIFORNIA. <PAS-P>.SPAIN. mbLg 2.8 (MDD).SPAIN. mbLg 3.4 (MDD).STRAIT OF GIBRALTAR. mbLg 2.6 (MDD).SPAIN. mbLg 2.6 (MDD).NORTHWESTERN BALKAN REGIONOFF COAST OF COSTA RICACENTRAL ALASKA. <AEIC> ML 3.6 (PMR), 3.1 (AEIC)SOUTH OF KERMADEC ISLANDSNORTHERN ITALY. ML 2.1 (LOG),NEAR COAST OF NORTHERN CALIF.SOUTHERN ALASKA. <AEIC>.LOYALTY ISLANDS REGIONFOX ISLANDS, ALEUTIAN ISLANDSBANDA SEAX IZANGSICILYSOUTH SANDWICH ISLANDS REGIONSOUTHERN ALASKA. <AEIC>. ML 2.5 (AEIC).HOKKAIDO, JAPAN REGION. Foreshock.HOKKAIDO. JAPAN REGION. Mw 7.5 (GS), 7.6 (HRV). Ms 6.7(BRK). Mo-5.5»10»»20 Nm (PPT). Two people killed, 614injured and substantial damage (VI JMA) at Kushiro,Hokkaido ond Hochinohe, Honshu. Felt (V JMA) ot Hiroo,Nemuro, Obihiro, Otoru ond Urokowo; (IV JMA) otHakodate and Tomokomoi; (III JMA) ot Sapporo, Hokkaido.Felt (IV JMA) ot Aomori ond Morioko; (III JMA) otAkito, Fukushimo, Sendai, Tokyo ond Yokohama, Honshu.Also felt (VII) on Shikoton ond (VI) ot Kurilsk, KurilIslands. Landslides and subsidence occurred in theepicentrol oreo. Depth from broadband displacementse i smagrams.CENTRAL CALIFORNIA. <BRK> ML 3.2 (BRK). Felt otAlbany, Berkeley, El Cerrito, Kensington ond Richmond.CHILE-ARGENTINA BORDER REGIONIRAQHOKKAIDO, JAPAN REGIONSTRAIT OF GIBRALTAR. mbLg 3.4 (MDD)NEAR COAST OF CENTRAL CHILE.BULGARIANEVADA. ML 4.3 (GS), 4.5 (BRK). Felt (III) ot Eureka.POLAND. ML 3.1 (WAR).NORTHERN XINJIANG, CHINA. ML 5-2 (BJI).NORTHERN ITALY. ML 2.4 (GEN).REPUBLIC OF SOUTH AFRICA. ML 2.6 (PRE).VIRGIN ISLANDSNEAR COAST OF NORTHERN CHILE. Felt (III) otAn to fogosto.KENAI PENINSULA, ALASKA. <AEIC>. ML 2.7 (AEIC).NORTHERN COLOMBIA. MD 4.6 (UPA).NORTHWESTERN BALKAN REGION. ML 2.1 (SKO).FRANCE. MD 2.9 (UCC).JAMAICA REGION. MD 2.7 (HOJ). Felt (III) ot Barbican,Cherry Gardens and Mono.GERMANY. MD 2.5 (UCC).SOUTH OF SUMBAWA, INDONESIASOUTHERN ALASKA. <AEIC>.ALBANIA. MD 3.1 (ATH). ML 2.9 (TIR).KYUSHU, JAPANCENTRAL ALASKA. <AEIC>. ML 3.0 (PMR), 2.6 (AEIC).

MD 3.7 (SAN)

MD 3.9 (SAN)

JAN 1993 PAGE 10

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MD 3.8 (SAN)

ML 3. 1 (BRK), 3.1 (GS) . ML 1.6 (TTG).

POLANDSPAIN. mbLg 3.0 (MOD) .MAURITIUS-REUNION REGIONVIRGIN ISLANDSCENTRAL ALASKA. <AEIC>. ML 2.9 (AEIC).POLAND. ML 3.2 (VIE).GREECECENTRAL CALIFORNIA. <BRK>. ML 5.3 (BRK). Minor domogein the Gilroy oreo. Felt (V) ot Ben Lomond ond SonBruno; (IV) at Alamo, Fremont, Hayword, La Selva Beach,Los Gotos, Mi librae, Mount Hermon, Oakland, Potterson,Son Francisco, San Jose, Son Lorenzo, Saratoga ond TresPinos. Felt os for north os Santa Rosa ond south tocentral Monterey County. Also felt at Modesto ondSac r oment o.SAN JUAN PROVINCE, ARGENTINANORTHWESTERN BALKAN REGION. ML 3.1 (SKO).BANDA SEAFIJI ISLANDS REGIONLEEWARD ISLANDS. ML 2.9 (FDF).FRANCE. ML 2.3 (LDG).REPUBLIC OF SOUTH AFRICASOUTHERN ALASKA. <AEIC>.NEAR COAST OF NORTHERN CHILE. Felt (IV) ot Copiopo ondDiego de Almogro; (II) ot Coldero.FRANCE. mbLg 3.0 (MOD). ML 2.8 (LDG).CENTRAL CALIFORNIA. <BRK>. ML 2.5 (BRK).BULGARIA. ML 3 0 (SKO).POLANDCASPIAN SEA. Felt ot Rudbor, Iron.SOUTHERN GREECE. MD 3.2 (ATH).NEAR SOUTH COAST OF MYANMARGREECE-ALBANIA BORDER REGION.SPAIN. mbLg 2.5 (MDD).TURKEYSAN JUAN PROVINCE, ARGENTINA.CENTRAL ITALYGREECENEAR COAST OF GUATEMALANORTHWESTERN BALKAN REGION. MD 2 2 (LJU), 1.5 (TRI)ALBANIA. ML 3.0 (TIR) MD 2.9 (TTG).VIRGIN ISLANDSNORTHERN CALIFORNIA <BRK>.NORTHWESTERN BALKAN REGION.GANSU, CHINA. ML 3.6 (BJI).CHILE-BOLIVIA BORDER REGIONCENTRAL ITALYVANUATU ISLANDS. Mw 5.2 (HRV).GANSU, CHINA. ML 3.8 (BJI).CENTRAL ITALYSOLOMON ISLANDSOFF COAST OF OREGON. ML 3.9 (BRK).ALBANIA. ML 2.6 (TlR), 2.4 (TTG).SOUTHERN CALIFORNIA. <PAS-P>. ML 2.8 (PAS).TURKEY. MD 3.9 (ATH), 3.6 (ISK). Felt in the Izmirarea.TURKEYCENTRAL ALASKA. <AEIC>. ML 4.8 (PMR), 4.7 (AEIC). Felt(IV) ot Fairbanks ond Minto; (III) ot Clear, Monley HotSprings ond Nenana. Also felt ot Cheno Hot Springs,Fox, North Pole ond Two Rivers.CENTRAL ITALY. MD 4.2 (TRI), 4.1 (FIR)4.2 (VIE) mbLg 4.1 (UCC).CENTRAL ITALYCENTRAL ITALYCENTRAL ITALYGREECE-ALBANIA BOEDER REGIONNEAR COAST OF NICARAGUAof N i coroguo.SOUTHERN CALIFORNIA. <PAS-P>.CENTRAL.ITALYSICILYJAMAICA REGION. MD 2.2 (HOJ). Felt in the Kingstonoreo .NEAR EAST COAST OF HONSHU, JAPANNORTHERN CHILESOUTHERN ALASKA. <AEIC>. ML 2.7 (AEIC).CENTRAL CALIFORNIA. <BRK>. ML 3.0 (BRK).KURIL ISLANDSSOUTHERN CALIFORNIA. <PAS-P>.CHILE-ARGENTINA BORDER REGIONSOUTH SANDWICH ISLANDS REGIONCENTRAL ALASKA. <AEIC>. ML 3.9 (PMR), 3.6 (AEIC).CHILE-ARGENTINA BORDER REGION. MD 3.6 (SAN).CENTRAL ITALYCENTRAL ALASKA. <AEIC>. ML 2.9 (AEIC).SOUTHERN ALASKA. <AEIC>. ML 3.0 (AEIC).CEBU, PHILIPPINE ISLANDSSICILYSAN JUAN PROVINCE. ARGENTINA. MD 4.1 (SAN).SOUTHERN GREECE. MD 3.0 (ATH).MARIANA ISLANDS. Mw 6.4 (GS). 6.2 (HRV). mb 6.1 (BRK)Felt (IV) on Soipon ond (II) on Guam. Depth from

3.8 (ROM). ML

ML (TIR)

Felt olong the Pacific coast

ML 3.2 (PAS). Felt.

ML 3.0 (PAS). Felt.

Mw 5.6 (HRV).

PAGE 11 JAN 1993

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JAN 1993 PAGE 12

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ML 4.1 (ISK). MD 3.9 (ATH). Felt ot Izmir,AEGEAN SEA.T ur key .FLORES REGION. INDONESIA. Mw 5.8 (HRV).FLORES REGION. INDONESIAFLORES REGION. INDONESIANORTHWESTERN BALKAN REGION. MD 3.4 (LJU), 3.0 (TRI). ML3.1 (VIE). Felt ot Grodoc, Metliko and Novo Mesto,S I oven i o.NORTHERN ITALY. ML 1.7 (GEN).RAT ISLANDS, ALEUTIAN ISLANDSNORTHWESTERN BALKAN REGION. ML 2.5 (LJU).FLORES REGION, INDONESIATAIWAN REGIONALBANIA. MD 3.5 (ATH). ML 3.3 (TTG), 3.1 (TIR).KERMADEC ISLANDS REGIONKURIL ISLANDSAEGEAN SEASAN JUAN PROVINCE, ARGENTINANORTHERN MID-ATLANTIC RIDGENORTHERN MID-ATLANTIC RIDGENORTHERN MID-ATLANTIC RIDGEALBANIA ML 2.3 (TTG).NORTHERN ITALY ML 1.8 (GEN).OFF COAST OF NORTHERN CALIFORNIA. <BRK>. ML 3.9 (BRK),3.7 (GS).PERU-BRAZIL BORDER REGION. Felt ot Lima, Oxopompo,Sotipo ond Pucollpo, Peru.AZORES ISLANDS M* 5.4 (HRV). Felt (VI) on Foiol, (IV)on Pico ond (III) on Soo Jorge, Grocioso ond Terceiro.REPUBLIC OF SOUTH AFRICA. ML 2.5 (PRE).WESTERN AUSTRALIAREPUBLIC OF SOUTH AFRICA. ML 2.8 (PRE).BANDA SEA. Mw 6.4 (GS), 6.4 (HRV). Ms 6.1 (BRK).Mo-2.6*10»* 19 Nm (PPT). Complex event observed onbroadband displacement seismogroms.SOUTHERN CALIFORNIA. <PAS-P> ML 2 8 (PAS).NORTHERN ITALY ML 1.7 (GEN)VIRGIN ISLANDSNORTHERN MID-ATLANTIC RIDGEAEGEAN SEACHIAPAS, MEXICOBULGARI AETHIOPI A. MD 4.9 (ARO) .KERGUELEN ISLANDS REGIONWINDWARD ISLANDS. ML 2.1 (FDF).REPUBLIC OF SOUTH AFRICA. ML 2.6 (PRE).NORTHERN ITALYSAN JliAN PROVINCE. ARGENTINA.NORTHERN ITALY. ML 2.0 (GEN).PUERTO RICO REGIONTRINIDAD. MD 3. 1 (TRN) .CHILE-ARGENTINA BORDER REGIONTIMOR REGION, INDONESIAPOLAND. MG 2.9 (WAR).GULF OF ALASKA. <AEIC>. ML 3.7MONA PASSAGECHILE-ARGENTINA BORDER REGION.NORTHWESTERN BALKAN REGION. ML 2.9 (TIR), 2.5 (TTG).NORTHWESTERN BALKAN REGION. ML 1.6 (TTG).UTAH. <SLC-P>. ML 3.6 (GS). Cool bump in the SoldierCreek Mine near Price. Some damage in the mine. Felt otHe I per.TURKEY. MD 2.7 ( ISK) .VANCOUVER ISLAND REGION. <PGC-P>. ML 4.2 (PGC).TURKEY. MD 2.8 ( ISK) .OFF COAST OF CENTRAL CHILE. MD 3.3 (SAN).NEAR COAST OF CENTRAL CHILE. MD 3.5 (SAN).NEAR COAST OF CENTRAL CHILE. MD 3.6 (SAN).NORTHERN ITALY. ML 2.4 (GEN), 2.4 (LDG).BANDA SEATRINIDAD. MD 3.5 (TRN).CHILE-ARGENTINA BORDER REGION. MD 3.7 (SAN).OFF COAST OF CENTRAL CHILETURKEY. MD 2.8 ( ISK) .

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CHILE-ARGENTINA BORDER REGION. MO 3.4 (SAN).SOUTHERN ALASKA. <AEIC>.NORTHWESTERN BALKAN REGION. ML 2.5 (SKO)TURKEYSUMBA REGION, INDONESIAEAST OF SEVERNAYA ZEMLYA, RUSSIA. Mw 5.5 (HRV).GREECE-BULGARIA BORDER REGIONLUZON, PHILIPPINE ISLANDSAFGHANISTAN-TAJIKISTAN BORD REG. Felt ot Islamabad,Peshawar and Rawalpindi, Pakistan.FLORES REGION, INDONESIAROMAN I ASOUTHERN CALIFORNIA. <PAS-P>. ML 2.9 (PAS).GREECE-BULGARIA BORDER REGIONKERGUELEN ISLANDS REGIONSAN JUAN PROVINCE, ARGENTINA. MD 4.0 (SAN).NEW MADRID, MISSOURI REGION. <TEIC> MD 3.0 (TEIC),3.0 (SLM). mbLg 3.0 (GS). Felt (III) ot Ridge I y andNewbern, Tennessee. Also felt at Mistan and Wynnburg,Tennessee. Felt (III) at Braqggodqcia andCaruthersvi I Ie. Missouri.NEAR EAST COAST OF HONSHU, JAPANKERGUELEN ISLANDS REGIONTAJIKISTANNORTHWEST OF KURIL ISLANDSJAMAICA REGION. MD 3.7 (HOJ). Felt at Mono.CHILE-ARGENTINA BORDER REGION. MD 4.1 (SAN).CRETE. MD 4.1 (ATH).GREECESOUTHERN ITALYAEGEAN SEA. MD 3.6 ( ISK) .AEGEAN SEAAEGEAN SEASOUTHERN ALASKA. <AEIC>.TURKEY. MD 3.6 (ISK).TURKEY. MD 2.8 (ISK).FLORES REGION, INDONESIASIClLYCHILE-BOLIVIA BORDER REGIONGREECE-ALBANIA BORDER REGION. ML 4.1 (TIR), 3.9 (ATH),3.7 (TTG).KENAI PENINSULA, ALASKA. <AEIC>.TURKEY. MD 3.6 (ISK).ALBERTA, CANADA. MD 3.4 (BUT).NEAR COAST OF GUERRERO, MEXICOREPUBLIC OF SOUTH AFRICA. ML 2.3 (PRE).OFF E. COAST OF N. ISLAND, N.Z.KURIL ISLANDSTURKEY. MD 3.3 (ISK).OFF COAST OF CENTRAL CHILE. MD 3.9 (SAN).SOUTHERN CALIFORNIA. <PAS-P>. ML 2-8 (PAS).TURKEY. MD 2.6 (ISK).OFF COAST OF CENTRAL CHILE. MD 3.6 (SAN).TURKEY. MD 2.6 (ISK).GREECEBANDA SEA. Mw 5.3 (HRV).SALTA PROVINCE, ARGENTINAGULF OF ALASKA. <AEIC>. ML 4.4 (PGC), 4.1 (AEIC). OFF COAST OF CENTRAL CHILE. MD 4.6 (SAN).TURKEY. MD 2.6 (ISK).NEAR COAST OF CENTRAL CHILE. MD 4.0 (SAN).REPUBLIC OF SOUTH AFRICA ML 2.7 (PRE).REPUBLIC OF SOUTH AFRICABANDA SEAFLORES REGION, INDONESIASOUTH SANDWICH ISLANDS REGIONGREECEGERMANY mbLg 3 6 (UCC) .IONIAN SEASOUTHERN GREECE. ML 3.5 (ATH).SOUTHERN ALASKA. <AEIC>. ML 2.5 (AEIC).MINAHASSA PENINSULA, SULAWESISOUTHERN ALASKA. <AEIC>.SOUTHERN ALASKA <AEIC>.ALASKA PENINSULA. <AEIC>.CENTRAL ITALYSOUTHERN ALASKA. <AEIC>.AEGEAN SEA. ML 3.6 (ATH). MD 3.7 (ISK).VANUATU ISLANDSSAN JUAN PROVINCE, ARGENTINA. MD 3.9 (SAN).OFF COAST OF CENTRAL CHILE. MD 3.7 (SAN).GREECETURKEY. MD 2.8 (ISK).KENAI PENINSULA, ALASKA. <AEIC>. ML 2.6 (AEIC).STRAIT OF GIBRALTAR. mbLg 2.7 (MOD).COLOMBIANORTHWESTERN BALKAN REGION. MD 2.9 (LJU)2.5 (VIE). Felt (III) at Gara. Croatia.SICILYCENTRAL ITALYSOUTH OF FIJI ISLANDSCENTRAL ALASKA. <AEIC>. ML 3.1 (AEIC), 3.1 (PMR)VANUATU ISLANDS

2.5 (TRI). ML

JAN 1993 PAGE 14

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REPUBLIC OF SOUTH AFRICA. ML 2.4 (PRE)CHILE-ARGENTINA BORDER REGIONMONA PASSAGENEW BRITAIN REGION, P.N.G.NEAR WEST COAST OF COLOMBIATAIWAN. Mw 5.7 (HRV). ML 5.3 (BJI).GREECE. ML 3.1 (ATH).GREECE-ALBANIA BORDER REGIONGUERRERO. MEXICOMYANMAR-INDIA BORDER REGIONTRINIDAD. MD 2.2 (TRN).JAMAICA REGION. MD 3.5 (HOJ)Por tI and.TURKEY. MD 2.7 (ISK).IRAN-IRAQ BORDER REGION. Same minor damage to houses inthe Abdanan-DehI or an area, Iran.TURKEY. MD 3.2 (ISK).UTAH. ML 3.0 (GS).NEAR COAST OF CENTRAL CHILE.GREECETURKEY. MD 2.8 ( ISK).NEAR WEST COAST OF COLOMBIA.COLOMBIACENTRAL ITALYPACIFIC-ANTARCTIC RIDGEEASTERN HONSHU. JAPANTURKEY. MD 3.6 (ISK).NEAR COAST OF CENTRAL CHILE.JAMAICA REGION. MD 2.3 (HOJ). Feltarea.ALBANIA. ML 3.4 (TIR).VANUATU ISLANDSSOUTH ISLAND, NEW ZEALANDCRETE. MD 3.9 (ATH).ALASKA PENINSULA. Mw 5.6 (HRV). ML 5.2 (PMR). Ms 5.0(BRK). Felt (IV) at King Cave and Sand Paint.SOUTH OF FIJI ISLANDSSOUTHERN YUKON TERRITORY, CANADA. <PGC-P>. ML 2.9(PGC), 2.6 (AEIC).NORTH ISLAND, NEW ZEALANDCRETE. ML 4.1 (ATH).GREECETURKEY. MD 2.9 ( ISK).PUERTO RICO REGIONNORTHERN COLOMBIA. MD 4.1 (UPA).GREECE. ML 2.9 (ATH).SOUTHERN ITALYCHILE-ARGENTINA BORDER REGIONCENTRA. ALASKA. ML 3.1 (PMR).POLAND. MG 2.8 (WAR).NEAR COAST OF VENEZUELACENTRAL ITALYNORTHWESTERN BALKAN REGION. MD 2.6 (LJU), 1.9 (TRI).TRINIDAD. MD 3.0 (TRN).GREECE-BULGARIA BORDER REGIONKERGUELEN ISLANDS REGIONNEW GUINEA, PAPUA NEW GUINEATURKEY MD 2.7 (ISK).NORTHERN ITALY. ML 2.3 (GEN), 2.2 (LDG).TANIMBAR ISLANDS REG., INDONESIAGREECE-ALBANIA BORDER REGIONAEGEAN SEA. MD 3.2 (ISK).SICILYVIRGIN ISLANDSGREECESAN JUAN PROVINCE, ARGENTINAAEGEAN SEA MD 3.1 (ISK).VANUATU ISLANDS REGIONTURKEY. MD 2.8 ( ISK).REPUBLIC OF SOUTH AFRICA.GREECETURKEY. MD 2.7 (ISK).TURKEY. MD 2.9 ( ISK).TURKEY. MD 2.6 (ISK).NEAR COAST OF CENTRAL CHILE.SICILYTURKEY. MD 2.8 (ISK).SOUTHERN ITALYTURKEY. MD 2.7 (ISK).LOYALTY ISLANDS REGIONZAIRE. mbLg 4.6 (BUL).GREECEFRANCE. ML 2.3 (LDG).STRAIT OF GIBRALTAR. mbLg 2.6 (MOD).KURIL ISLANDSMARIANA ISLANDS REGIONCENTRAL CALIFORNIA. <PAS-P>. ML 3.3 (PAS), 3.3 (GS). MD3.5 (GM). Felt (III) ot Bodfish and Kernville.HOKKAIDO, JAPAN REGION. Mw 5.3 (HRV).FIJI ISLANDS REGIONNORTHERN CHILETURKEY. MD 2.7 (ISK).SOUTH SANDWICH ISLANDS REGION

ML 2.2 (PRE).

MD 4.3 (SAN).

PAGE 15 JAN 1993

2 fi24

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NEAR SOUTH COAST OF FRANCE. ML 2.3 (LOG).TURKEY. MD 2.7 (ISK).PUERTO RICO REGIONFRANCE. ML 1.9 (LOG).CYPRUS REGION. ML 3.5 (CSS).NORTH ISLAND. NEW ZEALANDNEAR COAST OF NORTHERN PERUSOUTHERN ALASKA. <AEIC>. ML 2.6 (AEIC).TAJIKISTANCENTRAL CALIFORNIA. <GM-P>. MD 2.6 (GM).NEAR EAST COAST OF HONSHU, JAPANTURKEY. MD 3.9 ( ISK).KERGUELEN ISLANDS REGIONCENTRAL ALASKA. ML 3.3 (PMR).NORTHERN CHILEFRANCE. ML 3.8 (LDG).ALASKA PENINSULA. <AEIC>. ML 4.6 (PMR). Felt (IV) atSand Point. Also felt at King Cove.NORTHERN CHILEHAWAII. <HVO-P>. MD 4.4 (HVO). Felt (III) at Hilo,Honamu, NinaIe, Pahala. Papaalaa. Papaikau andPepeekeo. Alsa felt at Glenwaod, Hawaiian OceanviewEstates, Mountain View, Namakani Campground, Volcanoand Valcana Golf Course Subdivision.SOUTHERN ALASKA, <AEIC>. ML 2.7 (AEIC).HOKKAIDO. JAPAN REGIONMINAHASSA PENINSULA, SULAWESISOUTHERN ALASKA. <AEIC>.REPUBLIC OF SOUTH AFRICA. ML 2.7 (PRE).STRAIT OF GIBRALTAR. mbLg 3.3 (MDD).MINDANAO, PHILIPPINE ISLANDSFRANCE. ML 2.0 (LDG).SAN JUAN PROVINCE, ARGENTINACOLOMBIA. Felt at CaI i , Manizales and Pereira.TURKEY. MD 2.7 (ISK).JUJUY PROVINCE, ARGENTINATONGA ISLANDS. Mw 5.7 (HRV).OFF COAST OF CENTRAL AMERICADODECANESE ISLANDS. MD 3.5 (ISK).CHILE-ARGENTINA BORDER REGION. MD 3.4 (SAN).AFGHANISTAN-TAJIKISTAN BORD REG.CHILE-ARGENTINA BORDER REGION. MD 3.4 (SAN).NORTHERN CHILELUZON, PHILIPPINE ISLANDSKERMADEC ISLANDS, NEW ZEALAND. Felt on Raoul IslandCHILE-ARGENTINA BORDER REGION. MD 3.9 (SAN).TURKEY. MD 3.3 (ISK).CENTRAL ITALYSOLOMON ISLANDSTAIWAN REGION. ML 4.0 (BJI).SANTA CRUZ ISLANDSSAN JUAN PROVINCE, ARGENTINA. MD 4.0 (SAN).ARU ISLANDS REGION, INDONESIASI ClLYEASTERN NEW GUINEA REG., P.N.G.SOUTHERN CALIFORNIA. <PAS-P>. ML 3.3BANDA SEANEAR COAST OF CENTRAL CHILE.GREECETURKEY. MD 3.3 (ISK).GREECEFRANCEMONA PASSAGEKERMADEC ISLANDS REGIONBANDA SEANORTHWESTERN BALKAN REGION. ML 2.8 (VIE). MD 2.6 (LJU).Felt (IV) at Koprivna, Slovenia. Also felt (IV) insouthern Carinthia, Austria.TURKEY. MD 3.4 (ISK).CENTRAL ALASKA. <AEIC>. ML 3.7 (PMR). 3.6 (AEIC).TURKEY. MD 2.9 (ISK).FRANCE. ML 2.6 (LDG).SPAIN. mbLg 3.3 (MDD).SPAIN. mbLg 2.3 (MDD).SOUTHERN ALASKA. <AEIC>.HAWAII. <HVO-P>. MD 4.8 (HVO). Felt (V) at Holualaa andPahala; (III) at Hila, Hanakaa, Kailua Kana, Papaikauand Pepeekea. Some items knocked from shelves atPahala, Naalehu and Kailua Kana. Also felt at DiscoveryHarbour, Glenwoad and Punaluu. Felt throughout much afthe island af Hawai i as far as Kamuela.TURKEY. MD 2.7 (ISK).REPUBLIC OF SOUTH AFRICA. ML 2.9 (PRE).SOUTHERN CALIFORNIA. <PAS-P>. ML 2.7 (PAS).MICHOACAN, MEXICOKERMADEC ISLANDS REGIONWASHINGTON. <SEA-P>. ML 3.6 (SEA), 3.3 (GS). Felt (III)at Shelton. Felt in the Puget Sound area.KENAI PENINSULA, ALASKA. <AEIC>. ML 3.3 (AEIC).NEW GUINEA, PAPUA NEW GUINEACENTRAL ITALYGREECEOFF W COAST OF NORTHERN SUMATERA

(PAS)

MD 3.9 (SAN).

JAN 1993 PAGE 16

26 19 27 41.5 38.084 N 27.227 E 10 G 0.5 9 TURKEY. MO 3.2 (ISK).26 19 51 02.2% 26.351 S 27.685 E 5 G 1.15 REPUBLIC OF SOUTH AFRICA. ML 2.4 (PRE).26 20 06 30.24 62.503 N 148.270 W 2 60 CENTRAL ALASKA. <AEIC>. ML 3.2 (AElC), 3.0 (PMR).26 20 13 34.74 60.207 N 151.717 W 55 57 KENAI PENINSULA, ALASKA. <AEIC>. ML 2.9 (AEIC).

a 26 20 32 06.9 23.027 N 101.062 E 33 N 5.4 5.6 1.0 254 YUNNAN, CHINA. Mw 5.6 (HRV). At least 66 peopleinjured, 6,972 houses destroyed ond 21.444 seriously damaged in southwestern Yunnan Province.

26 20 46 36.9 22.956 N 101.071 E 33 N 4.5 1.0 33 MYANMAR-CHINA BORDER REGION. ML 4.4 (BJI).26 21 38 36.8 44.357 N 7.263 E 10 G 0.4 7 NORTHERN ITALY. ML 2.3 (LOG).26 22 42 09.2* 43.769 N 25.604 E 10 G 0.8 5 BULGARIA27 00 23 51.0 36.426 N 5.414 W 10 G 1.1 11 STRAIT OF GIBRALTAR. mbLg 2.9 (MOD).27 00 33 47.9* 43.745 N 128.158 W 10 G 3.5 1.3 14 OFF COAST OF OREGON27 00 39 07.1* 24.076 N 93.731 E 65 ? 4.1 1.3 13 MYANMAR-1NDIA BORDER REGION27 01 12 18 0 30.493 N 141.811 E 33 N 4.8 0.9 37 SOUTH OF HONSHU, JAPAN27 01 54 47.8* 30.773 S 68.888 W 10 G 0.7 6 SAN JUAN PROVINCE. ARGENTINA27 02 13 57.8 22.360 S 170.600 E 58 ? 5.1 1.3 68 LOYALTY ISLANDS REGION27 03 39 02.2 43.163 N 12.772 E 10 G 1.0 13 CENTRAL ITALY. MD 3.1 (TRI).27 05 00 13.2 22.910 N 100.979 E 33 N 4.7 4.2 1.1 52 MYANMAR-CHINA BORDER REGION. ML 4.5 (BJl).27 05 04 25. 1% 31 892 S 66.889 W 23 * 1.0 6 LA RIOJA PROVINCE, ARGENTINA27 05 29 54.5* 38.112 N 26.870 E 10 G 0.6 6 AEGEAN SEA. MD 3.2 (ISK).27 05 31 05.8* 50.286 N 18.928 E 10 G 0.6 5 POLAND. ML 2.8 (WAR).27 06 37 10.4? 45.78 N 16.13 E 10 G 0.7 5 NORTHWESTERN BALKAN REGION. MD 2.B (LJU).27 07 31 58.1 39.300 N 28.742 E 10 G 0.6 12 TURKEY. MD 3.1 (ISK).27 07 59 51.2? 43.96 N 12.22 E 10 G 0.2 4 CENTRAL ITALY27 08 08 13.1» 38.197 N 27.379 E 10 G 1.0 6 TURKEY. MD 3.1 (ISK).27 08 13 36.64 38 819 N 122.775 W 3 36 NORTHERN CALIFORNIA. <GM-P>. MD 3.4 (GM). ML 3.5 (8RK)

3 2 (GS). FeIt (IV) at Cobb.27 08 15 06.64 38.820 N 122.784 W 3 22 NORTHERN CALIFORNIA. <GM-P>. MD 2.8 (GM).27 08 21 39.4* 6.026 S 129.828 E 33 N 5.1 0.9 8 BANDA SEA27 09 00 08.2 31.711 S 68.186 W 102 * 1.2 19 SAN JUAN PROVINCE, ARGENTINA. MD 4.4 (SAN).27 09 02 55.3 6.040 N 124.473 E 83 * 5.0 1.0 52 MINDANAO, PHILIPPINE ISLANDS27 09 10 50. 1% 39.118 N 27.666 E 10 G 0.9 5 TURKEY. MD 2.8 (ISK).27 10 27 05.6 32.104 N 60.088 E 33 N 5.1 1.1 139 NORTHERN IRAN. Three people injured and 200 houses

destroyed in the Nehbandan area.27 10 53 31.2 7.202 N 127.197 E 72 * 5.0 1.1 58 PHILIPPINE ISLANDS REGION27 11 08 42.0* 31.856 S 67.878 W 5 G 0.4 5 SAN JUAN PROVINCE, ARGENTINA27 11 23 27.9% 36.459 N 4.449 W 10 G 1.4 6 STRAIT OF GIBRALTAR. mbLg 2.4 (MDD).27 11 35 33.7? 39.14 N 27.54 E ie G 0.4 4 TURKEY MD 2.7 (ISK).27 11 41 57 3% 26.445 S 27.408 E 5 G 0.9 7 REPUBLIC OF SOUTH AFRICA. ML 2.3 (PRE).27 11 43 27.1* 18.189 N 120.960 E 21 * 4.4 1.0 12 LUZON, PHILIPPINE ISLANDS27 12 11 08.2* 11 060 S 114.733 E 33 N 4.7 0.8 12 SOUTH OF BALI, INDONESIA27 12 11 21.1* 51.141 N 15.820 E 10 G 1.3 5 POLAND MG 2.4 (WAR).27 12 24 06.4 33 312 S 72.092 W 25 0.9 23 OFF COAST OF CENTRAL CHILE. MD 4.5 (SAN).27 12 28 57.54 63 173 N 149.334 W 82 51 CENTRAL ALASKA. <AEIC>.27 12 53 12.1 26 356 S 27.343 E 5 G 1.3 13 REPUBLIC OF SOUTH AFRICA mbLg 3.1 (BUL). ML 3.4 (PRE)27 13 41 06.0% 26 906 S 26.762 E 5 G 0.7 5 REPUBLIC OF SOUTH AFRICA ML 2.0 (PRE).27 14 51 06 74 58.269 N 142.964 W 10 G 29 GULF OF ALASKA. <AEIC>. ML 3.0 (PGC), 2.7 (AElC).27 15 25 04.7 42.823 N 141.913 E 154 D 4.8 1.2 66 HOKKAIDO, JAPAN REGION27 16 00 14.8 37.924 N 30.785 E 10 G 0.8 8 TURKEY. MD 3.4 (ISK). ML 3.3 (CSS).27 16 02 30.1 37.935 N 30.859 E 10 G 0.7 8 TURKEY. MD 3.3 (ISK).27 17 34 57.1 37 150 N 71.872 E 159 * 4.5 1.1 37 AFGHANISTAN-TAJIKISTAN BORD REG.27 17 44 27.3* 32.097 N 60.001 E 33 N 4.6 0.9 27 NORTHERN IRAN. Felt in the Nehbandan area.27 18 52 42.0 31.502 S 69.499 W 133 * 0.6 18 SAN JUAN PROVINCE, ARGENTINA. MD 4.2 (SAN).27 19 19 32.0? 49.87 N 30.00 W 10 G 4.5 1.1 13 NORTHERN MID-ATLANTIC RIDGE27 19 22 06.8? 18 23 N 77.06 W 10 G 0.3 4 JAMAICA REGION. MD 2.1 (HOJ).27 19 32 52.7? 37.69 N 14.08 E 10 G 0.4 4 SICILY27 19 38 15.6% 39.405 N 16.673 E 10 G 1.3 7 SOUTHERN ITALY27 19 56 36.7% 37 821 N 14.154 E 10 G 0.1 5 SICILY27 20 34 32.5* 51.065 N 175.377 W 33 N 4.0 0.8 10 ANDREANOF ISLANDS. ALEUTIAN IS.27 23 19 20 1% 41 968 N 13.167 E 10 G 0.8 6 SOUTHERN ITALY27 23 41 00.5 36 089 N 22.362 E - 86 4.4 1.0 222 SOUTHERN GREECE28 01 52 27 6* 55.972 S 27.379 W 130 ? 5.4 0.4 13 SOUTH SANDWICH ISLANDS REGION28 02 30 59.5* 36.694 N 71.330 E 216 * 4.8 1.0 16 AFGHANISTAN-TAJIKISTAN BORD REG.28 02 59 53.0* 35.672 N 27.930 E 10 G 1.5 13 DODECANESE ISLANDS. MD 3.8 (ATH), 3.7 (ISK).28 03 06 33.4 38.567 N 29.243 W 10 G 4.9 4.3 0.8 100 AZORES ISLANDS. Felt (V) at Praia do Norte; (IV) at

Salaa, Ribeirinha, Cedras, Feteira and Horta; (III) at Pedro Miguel. Madolena, Condelaria, Sao Moteus, Soo Rogue do Pica; (II) at Velas, Rosais and Colheto.

28 04 30 52-8 49.845 N 18.459 E 10 G 0.6 20 CZECH AND SLOVAK REPUBLICS. ML 3.4 (VIE), 3.4 (WAR).28 04 58 50.6 18.220 S 178.396 W 601 4.9 0.9 125 FIJI ISLANDS REGION28 05 05 21.4& 62.852 N 148.379 W 67 3.0 78 CENTRAL ALASKA. <AEIC>. ML 3.7 (PMR), 3.5 (AElC).28 06 36 00.54 56.550 N 156.632 W 54 3.7 73 ALASKA PENINSULA. <AEIC>. ML 3.9 (PMR), 3.8 (AEIC).28 06 51 50.4% 41.419 N 19.839 E 5 G 1.4 6 ALBANIA. ML 2.8 (TIR).28 07 33 47.2? 33.99 S 70.86 W 92 ? 0.1 9 CHILE-ARGENTINA BORDER REGION. MD 3.3 (SAN).28 08 05 11.24 60.494 N 147.012 W 18 48 SOUTHERN ALASKA. <AEIC>. ML 2.5 (AEIC).28 08 10 08.2* 24.707 N 122.052 E 52 ? 4.7 0.8 9 TAIWAN REGION28 09 22 25.4? B.35 S 122.36 E 33 N 4.2 1.1 6 FLORES REGION, INDONESIA28 09 48 54.0? 43.63 N 16.93 E 10 G 1.4 5 NORTHWESTERN BALKAN REGION. MD 3.1 (LJU).28 10 07 12.5? 39.14 N 27.65 E 10 G 0.5 4 TURKEY. MD 2.8 (ISK).28 10 12 35.0 41.097 N 28.726 E 5 G 0.6 10 TURKEY. MD 2.9 (ISK).28 10 37 58.2 41.473 N 19.613 E 10 G 0.7 12 ALBANIA. ML 2.6 (TTG).28 11 17 02.7% 40.799 N 23.014 E 10 G 1.0 6 GREECE28 11 19 15.3* 25.162 N 123.262 E 111 ? 4.2 1.3 17 NORTHEAST OF TAIWAN28 11 32 00.9 38.229 N 22.776 E 10 G 0.8 12 GREECE. ML 3.4 (ATH).28 11 48 15.9 44.627 S 168.005 E 115 * 0.4 19 SOUTH ISLAND. NEW ZEALAND28 13 07 28.6? 11.26 N 60.29 W 49 ? 3.7 1.1 9 WINDWARD ISLANDS. MD 3.4 (TRN).28 13 44 37.8% 26.926 S 26.726 E 5 G 0.8 7 REPUBLIC OF SOUTH AFRICA. ML 2.2 (PRE).28 14 03 50.9? 14.36 N 91.89 W 55 ? 4.4 1.4 10 GUATEMALA28 14 38 58.5* 50.221 N 19.099 E 10 G 1.5 5 POLAND. ML 3.2 (WAR).28 14 54 04.5? 40.76 N 1.38 W 10 G 0.0 4 SPAIN. mbLg 2.5 (MDD).28 15 06 49.5% 39.290 N 27.670 E 10 G 1.5 5 TURKEY. MD 2.7 (ISK).28 15 06 54.9 16.302 S 71.747 W 127 * 4.7 1 2 36 SOUTHERN PERU28 15 35 59.5? 6.58 S 148.01 E 53 * 4.8 1.5 8 NEW BRITAIN REGION, P.N.G.

PAGE 17 JAN 1993

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NORTHWESTERN BALKAN REGION. ML 1.7 (TTG).BANDA SEASAN JUAN PROVINCE. ARGENTINAAEGEAN SEA. MD 3.1 (ISK).REPUBLIC OF SOUTH AFRICA. ML 2.3 (PRE).STRAIT OF GIBRALTAR. mbLg 2.6 (MOD). Felt at Jimena de I a Frontera, Spa i n.AFGHANISTAN-TAJIKISTAN BORD REG.TIMOR SEAPOLAND. MG 2.8 (WAR).FRANCE. ML 2.5 (LOG).WESTERN AUSTRALIA8URU, INDONESIA. Mw 5.3 (HRV).FRANCE. ML 2.5 (LOG).MINDANAO, PHILIPPINE ISLANDSTURKEY. MD 3.5 (ISK).TURKEY. MD 2.9 ( I SK).FRANCE. ML 1.5 (LOG).SOUTH OF TIMOR, INDONESIASOUTHERN CALIFORNIA. <PAS-P>SICHUAN, CHINA. ML 4.0 (BJI).FRANCE. ML 2.5 (LOG).GREECEGREECEREPUBLIC OF SOUTH AFRICA. ML 2.1 (PRE).NORTHERN ITALY. ML 1.7 (VIE).ALBANIA. ML 2.0 (SKO).CHILE-ARGENTINA BORDER REGIONLEEWARD ISLANDS. ML 2.9 (FDF).NORTH ISLAND, NEW ZEALANDGREECE-BULGARIA BORDER REGIONVANCOUVER ISLAND REGION. <PGC-P>.JUJUY PROVINCE, ARGENTINANORTHERN COLOMBIAGERMANY. MD 2.5 (UCC).SAN JUAN PROVINCE. ARGENTINAOFF E. COAST OF N. ISLAND, N.Z.SOUTHERN ALASKA. <AEIC>. ML 2.9 (AEIC).TURKEY. MD 2.7 (ISK).NORTH ISLAND, NEW ZEALANDREPUBLIC OF SOUTH AFRICA. ML 2.4 (PRE).FRANCE. ML 2.3 (LOG).REPUBLIC OF SOUTH AFRICA. ML 2.2 (PRE).NORTH ISLAND, NEW ZEALANDILLINOIS. mbLg 3.2 (GS). MD 3.2 (SLM). Felt (III) atHerrick and (M) ot Hagarstawn, Saint Elmo and SaintPeter.GREECE-ALBANIA BORDER REGION. MD 3.4 (ATH). ML 3.1 '(TIR).NORTHERN ITALYPOLAND. ML 3.4 (VIE).NORTHWESTERN BALKAN REGION.ROMAN I ATURKEY. MD 2.9 (ISK).CENTRAL ITALY. ML 2.5 (LDG).STRAIT OF GIBRALTAR. mbLg 2.3IRIAN JAYA, INDONESIAOFF EAST COAST OF HONSHU, JAPANTURKEY. MD 2.9 (ISK).EASTERN MEDITERRANEAN SEA. ML 2.4 (CSS)AEGEAN SEACALIFORNIA-NEVADA BORDER REGION.ML 3. 1 (BRK) .GERMANY. MD 2.3 (UCC).KURIL ISLANDSPOLAND. ML 3.5 (WAR).LEEWARD ISLANDS ML 3.3 (FDF;LEEWARD ISLANDS. ML 3.3 (FDF)PYRENEES. mbLg 2.7 (MOD)CENTRAL ALASKA. <AEIC>.SOUTHERN ALASKA. <AEIC>.AEGEAN SEAGREECESICILYSAN JUAN PROVINCE. ARGENTINAOKLAHOMA. <TUL>. mbLg 2.0 (TUL)NEAR COAST OF CENTRAL CHILE. MDNEAR COAST OF CENTRAL CHILE. MDREPUBLIC OF SOUTH AFRICA. mbLg 3.5 (BUL)NORTHERN ALASKA. <AEIC>. ML 2.9 (AEIC).UTAH. MD 2.5 (GS).SAN JUAN PROVINCE. ARGENTINACALIFORNIA-NEVADA BORDER REGION.ML 3.6 (GS). 3.4 (BRK).FRANCESOUTHERN ALASKA. <AEIC>.NEAR COAST OF OAXACA, MEXICOSAN JUAN PROVINCE. ARGENTINASOUTHERN EAST PACIFIC RISE

ML 1.6 (SKO).

(MDD)

<GM-P>. MD 3.0 (GM).

MD 2.8 (TRN).

ML 2.5 (LDG).

4.0 (SAN). 3.7 (SAN).

ML 3.4 (PRE).

<GM-P>. MD 3.4 (GM)

NEAR COAST OF CENTRAL CHILE. TURKEY. MD 2.6 (ISK). POLAND. ML 3.6 (VIE). CENTRAL CALIFORNIA. <PAS-P>.

MD 3.9 (SAN).

ML 3.0 (PAS). 2.7 (GS).

JAN 1993 PAGE 18

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14 POLAND. ML 3.7 (GRF), 3.6 (VIE).7 KYUSHU. JAPAN4 TURKEY. MD 2.7 (ISK).

10 FRANCE6 REPUBLIC OF SOUTH AFRICA. ML 3.1 (PRE).5 NEAR COAST OF NORTHERN CALIF. <GM-P>. MD8 SPAIN. mbLg 2.8 (MOD).7 BRITISH COLUMBIA, CANADA. <PGC-P>. ML 3

in the Fort St. John oreo. CYPRUS REGION. MD 4.1 (CSS). NORTH ISLAND, NEW ZEALAND CENTRAL CALIFORNIA. <GM-P> GREECESOUTHERN BOLIVIA CENTRAL PERUCHILE-ARGENTINA BORDER REGION NEAR COAST OF CENTRAL CHILECENTRAL ALASKA. <AEIC>. ML 3.5 (AEIC), 3.4 (PMR) AEGEAN SEA. MD 3.0 (ISK).SAN JUAN PROVINCE, ARGENTINA. MD 4.0 (SAN). NORTHWESTERN BALKAN REGION ROMANIAAEGEAN SEA. ML 3.0 (ATH). OFF EAST COAST OF HONSHU, JAPAN NEAR COAST OF CENTRAL CHILE. MD 3.7 (SAN). SOUTHERN GREECE. MD 3.5 (ATH). ARU ISLANDS REGION, INDONESIA AEGEAN SEAOFF E. COAST OF N. ISLAND, N.Z. SOUTHERN GREECE. ML 3.4 (ATH). NORTHWESTERN BALKAN REGION. ML 2.4 (TTG). SWITZERLAND ML 2.7 (LOG). TONGA ISLANDSCALIFORNIA-NEVADA BORDER REGION NEAR COAST OF NICARAGUANORTHWESTERN BALKAN REGION. ML 3.0 (TIR) SOUTHERN CALIFORNIA. <PAS-P>. ML Fel t .

17 BONIN ISLANDS REGION8 NEAR COAST OF CENTRAL CHILE. MD 3.7 (SAN).

10 LEEWARD ISLANDS. MD 3.7 (TRN).11 SOUTHERN GREECE. ML 3.3 (ATH).6 EASTERN NEW GUINEA REG., P.N.G.

16 CRETE35 KENAI PENINSULA, ALASKA. <AEIC>. 10 NORTHERN ITALY. ML 2.3 (LOG). 75 YUNNAN, CHINA. ML 4.7 (BJI). Two people were killed ond

some houses were slightly domoged in Doyoo County. 21 NORTH ISLAND, NEW ZEALAND9 CHILE-ARGENTINA BORDER REGION. MD 3.7 (SAN).

16 CHILE-ARGENTINA BORDER REGION. MD 3,9 (SAN).8 OFF COAST OF NORTHERN CHILE

<GM-P>. MD 2.9 (GM)

2.9 (TTG). 3.5 (PAS), 3.4 (GS)

ADDITIONAL SOURCE PARAMETERS

01 09 56 27.27 31.621S 71.608W 27km 5 4mb ( 25 obs.) 4.7Msz ( 8 obs.) NEAR COAST OF CENTRAL CHILE CENTROID, MOMENT TENSOR (HRV) Doto Used: GDSN L.P.B.: 21S, 29C Cen t ro i d Local i on: Origin Time 09.56:34.0 0.5 Lot 31.93S 0.07 Lon 71.66W 0.07 Dep 22.2 3.1 Ho I f-durotion 1.1 P r inc i poI Axes :

Scole 10*.16 NmT Vol- 11.04 Pig-64 Azm- 83N -1.03 1 174P -10.01 26 265

Best Double Coup Ie:Mo-1.1 * 10«* 17NP1:Strike-356 Dip-19 Slip- 92NP2: 174 71 89

01 21 36 38.85 61.011S 154.003E 10km5.2mb ( 17 obs.) 5.1Msz ( 5 obs.)BALLENY ISLANDS REGIONCENTROID, MOMENT TENSOR (HRV)Doto Used: GDSNL.P.B.: 18S, 28CCent ro i d Locat i on:Origin Time 21:36:44.5 0.3Lot 60.76S 0.04 Lon 152.78E 0.07Dep 15.0 FIX Ho If-durotion 1.5Pr i nc i poI Axes:

Scole 10**17 Nm T Vol- 2.73 Pig- 4 Azm-205 N -0.05 64 304 P -2 68 26 113

Best Double Coup Ie:Mo-2.7*10»* 17 NP1 Strike-252 Dip-69 Slip 164 NP2. 157 75 -22

02 06 29 18 15 39.81 S 86.45 E 10km5.2Msz ( 2 obs. )SOUTHEAST INDIAN RIDGECENTROID. MOMENT TENSOR (HRV)Doto Used' GDSNL.P.B.: 12S, 18CCen t ro i d Locot i on:Origin Time 06:29:12.7 0.6Lot 40.00S FlX;Lon 86.55E FIXDep 15 0 FIX Hoif-durotion 1.1P rincipoI Axes

ScoIe 10* * 17 NmT Vol- 1 63 Pig-42 Azm-103 N 0.37 27 220 P -2.00 36 332

Best Double Coup Ie:Mo-1.8*10*»17 NP1:Strike-122 Dip-27 Slip- 173 NP2: 219 87 63

03 04 23 34.59 1.513S 119.679E 37km5.6mb ( 73 obs.) 5 2Msz ( 23 obs.)SULAWESI, INDONESIACENTROID, MOMENT TENSOR (HRV)Doto Used: GDSNL.P.B.: 21S, 35CCentroid Location:Origin Time 04:23.41.8 0.4Lot 1.17S 0.04 Lon 120.08E 0.04Dep 48.4 2.7 HOIf-durotion 1.4P r i nc i poI Axes:

Scole 10«»17 NmT Vol- 3.19 Pig-18 Azm- 25 N 1.47 70 179 P -4.66 8 292

Best Double Coup!e:Mo-3.9»10« 17 NP1:Strik«- 68 Dip-72 Slip- 173 NP2: 160 83 19

03 17 08 13.82 4.064S 129.512E 54km 5.8mb ( 78 obs.)BANDA SEACENTROID, MOMENT TENSOR (HRV)Doto Used: GDSNL.P.B.: 24S. 44CCen t ro i d Loco t i on:Origin Time 17:08:14.4 0.4Lat 4.13S 0.03 Lon 129.4TE 0.04Dep 20.3 1.8 Ho I f-durotion 1.8P rinc i poI Axes:

Scole 10*»17 Nm T vol- 5.07 Pig-58 Azm-295 N 1.26 31 103 P -6.33 5 196

Best Double Coup Ie:Mo-5.7»10»«17 NP1:Strike-316 Dip-48 Slip- 134 NP2: 80 58 52

04 01 26 17.92 3.266N 128.094E 72km 5.9mb (106 obs.) NORTH OF HALMAHERA. INDONESIA FAULT PLANE SOLUTION: P-Waves NP1:Strike-106 Dip-86 Slip- 15 NP2: 15 75 176

Pr i nc i poI Axes:T Pig-13 Azm-331 P 8 240

Comment: The focal mechonism is moderately well controlled ond corresponds to strike slip faulting with o moderate reverse component. The preferred fault plane is not de te rmi ned.

RADIATED ENERGY No. of sto: 6 Focal mech. F

PAGE 19 JAN 1993

Energy 3.8±1.1 * 10** 13 Mm CENTROID, MOMENT TENSOR (HRV) Doto Used: GDSN L.P.B.: 28S, 61C Centroid Locotion:Or igi n T ime 01 :26:21 .9 0.2 Lot 3.31N 0.02 Lon 127.96E 0.02 Dep 69.C 1.6 Ho If-durotion 2.2 Pr i nc i poI Axes:

Scole 10»*17 NmT Vol- 8.55 Pig-64 Azm- 29N -1.09 24 190P -7.46 8 283

Best Double Coup Ie:Mo-8.0*10**17NP1:Strike- 39 Dip-43 Slip- 127NP2: 173 57 60

04 10 28 07.66 4.126S 129.548E 30km5.6mb ( 53 obs.) 4 8Msz ( 19 obs.)BANDA SEACENTROID, MOMENT TENSOR (HRV)Doto Used: GDSNL.P.B.: 17S, 21CCentroid Locotion:Origin Time 10:28:16.6 1.2Lot 3.62S C.09 Lon 129 61E 0 08Dep 31.9 5.5 Ha If-durotion 1.1Pr i nc i poI Axes:

Scale 10**16 NmT Vol- 8.13 Pig-84 Azm-133 N -1.44 6 293 P -6.69 2 23

Best Double Coup Ie:Mo-7.4*10**16 NP1:Strike-119 Dip-43 Slip- 99 NP2: 287 48 82

04 20 41 11.20 22.055S 174 866W 33km 5.9mb ( 70 obs.) 6.2Msz ( 64 obs.) TONGA ISLANDS REGION CENTROID, MOMENT TENSOR (HRV) Doto Used- GDSNL.P.B.: 21S, 48C M.W.: 16S, 13C Cen t ro i d Locot i on:Origin Time 20:4116.1 0.2 Lot 22.62S 0.03 Lon 174 16W 0.02 Dep 26.8 1.1 Half-duration 2 3 Pr i nc i poI Axes:

Scole 10*.17 NmT Vol- 10.59 Pig-62 Azm-286N 0 59 6 27P -11.18 27 1 20

Best Double Couple Mo-1.1 * 10* 18NP1:Strike-226 Dip-19 Slip- 109NP2: 25 72 84

06 03 42 44.89 14.916N 93 798W 29km 4.8mb ( 22 obs ) 4 6Msz ( 2 obs ) NEAR COAST OF CHIAPAS, MEXICO CENTROID, MOMENT TENSOR (HRV) Doto Used: GDSN L.P.B.: 12S, 16C Cen t ro i d Locot i on:Or igi n T ime 03:42:46.1 0.9 Lot 15.04N FIX;Lon 93.77W FIX Dep 15.0 FIX Hoif-durotion 1.0 P r i nc i pa I Axes:

ScoIe 10**17 NmT Vol- 1.25 Pig-46 Azm- 41N 0.15 12 299P -1.40 42 198

Best Double Coup Ie:Mo-1.3*10**17NP1:Strike-219 Dip-12 Slip- 10NP2: 119 88 102

06 22 51 44.63 28.997N 52.137E 24km5.4mb (103 obs.) 5.3Msr ( 28 obs.)SOUTHERN IRANCENTROID, MOMENT TENSOR (HRV)Doto Used: GDSNL.P.B. : 14S, 29CCentroid Location:Or igin Time 22:51 :46.2 0.3Lot 29.31N 0.04 Lon 52.02E 0.04Dep 15.0 FIX Half-durotion 1.4Pr i nc i poI Axes:

Scole 10**17 NmT Val- 1.76 Pig- 9 Azm-113 N -0.53 76 340 P -1.23 10 204

Best Double Coup Ie:Mo-1.5*10**17 NP1:Strike-248 Dip-76 Slip- 0 NP2: 339 90 -166

07 07 42 26.33 0.136N 16.972W 10km 5.7mb ( 95 obs.) 5.4Msz ( 41 obs.) NORTH OF ASCENSION ISLAND CENTROID, MOMENT TENSOR (HRV) Doto Used: GDSN L.P.B.: 22S, 44C Cen t ro i d Locot i on:Origin Time 07:42:32.8 0.2Lot 0.62N 0.02 Lon 16.94W 0.03Dep 15.0 FIX Ho If-durotion 1.7Pr i nc i poI Axes:

Sea Ie 10**17 NmT Vol- 2.95 Pig-23 Azm- 34N 1 . 22 64 247P -4.17 13 129

Best Double Coup Ie.Mo-3.6«10* 17NP1:Strike-173 Dip-65 Slip- 7NP2: 80 84 154

07 12 02 10.44 32.031S 178.073W 10km 5.2mb ( 14 abs.) 4.9Msz ( 1 obs.) SOUTH OF KERMADEC ISLANDS CENTROID, MOMENT TENSOR (HRV) Doto Used: GDSN L.P.B.: 15S, 21C Cent ro i d Loco t i on:Or igi n T ime 12:02:12.6 0.7Lot 31.93S FIX;Lon 178.05W FIXDep 15.0 FIX Half-durotion 1.6P r i nc i poI Axes:

Scale ie**17 NmT Val- 3.13 Pig-47 Azm-311N -0.31 3 218P -2.82 43 125

Best Double Coup Ie.Mo-3.0*10** 17NP1:Strike-162 Dip- 3 Slip- 34NP2: 38 88 93

07 12 06 44.29 32.636S 178.074W 10km 5.5mb ( 27 obs.) 5.3Msz ( 30 obs.) SOUTH OF KERMADEC ISLANDS CENTROID, MOMENT TENSOR (HRV) Dato Used: GDSN L.P.B.: 20S, 30C Centroid Loco t i on:Origin Time 12 06'53.6 0 5 Lot 32.32S 0.07 Lon 178.14W 6.07 Dep 15.6 FIX Ha I f-durotion 1.5 Principal Axes:

ScoIe 10** 1 7 NmT Vol- C.94 Pig-60 Azm-284N 0.33 5 23P -3.28 29 116

Best Double Coup Ie.Mo-3.1 16** 1 7NP1 Strike-220 Dip-16 Slip- 108NP2- 21 74 85

07 16 46 16.27 32.123S 177.949W 10km 5.3mb ( 16 obs.) 4.9Msz ( 3 obs )SOUTH OF KERMADEC ISLANDS CENTROID, MOMENT TENSOR (HRV)Dato Used: GDSNL.P.B.: 12S, 21CCentroid Location:Origin Time 16:46:20.5 0.7Lot 31.91S 0.16 Lon 177.59W 0.09Dep 15.0 FIX Ha I f-durotion 1.3P r i nc i poI Axes:

Scole 10**16 NmT Vol- 13.80 Pig-53 Azm-351 N -0.85 28 215 P -12.95 21 113

Best Double Coup Ie:Mo-1.3*10** 17 NP1:Strike-163 Dip-34 Slip- 33 NP2: 45 72 120

07 18 35 04.05 25.085S 179.987W 521km5.0mb ( 37 obs.)SOUTH OF FIJI ISLANDSCENTROID, MOMENT TENSOR (HRV)Doto Used: GDSNL.P.B.: 15S, 18CCentroid Locotion:Or igi n T ime 18 35: 8.7 0. 5Lot 24.54S 0.06 Lon 179.95W 0.04Dep 507.1 3.4 Hoi f-duration 1.4Pr i nc i pa I Axes:

Scole 10**17 NmT Vol- 2.26 Pig-44 Azm- 90 N -0.06 1 181 P -2.20 46 272

Best Double Couple.Mo-2.2*10** 17 NP1 S t r i ke-149 Dip- 1 Slip 122

NP2 : 89 -89

08 17 31 10.85 13.006N 49.351E 10km5.3mb ( 82 obs.) 5.0Msz ( 7 obs.)EASTERN GULF OF ADENCENTROID, MOMENT TENSOR (HRV)Dota Used: GDSNL.P.B.; 18S, 31CCen t r o i d Locot i on:Origin T i me 17:31:11.90.5Lot 13.26N 0.05 Lon 49.33E 0.06Dep 15.0 FIX Hoif-duration 1.4Pr i nc i poI Axes:

Scole 10**17 NmT Vol- 2.12 Pig-21 Azm-173 N -0.45 20 271 P -1 .67 60 41

Best Double Coup Ie:Mo-1.9*10** 17 NP1 : St r i ke-231 Dip-30 Slip 134 NP2: 99 69 -68

09 11 15 51.95 32.199S 178.113W 10km 5.4mb ( 12 obs.) 5.2Msz ( 11 obs.) SOUTH OF KERMADEC ISLANDS CENTROID, MOMENT TENSOR (HRV) Doto Used: GDSN L.P.B.: 19S, 31C Cent ro i d Locot i on: Or igi n T ime 11:15:58.2 0.5 Lot 32.21S 0.07 Lon 177.61W 0.06 Dep 15.0 FIX Hoif-durotion 1.2 Principal Axes:

Scale 10**17 Nm T Val- 2.07 Pig-64 Arm-265 N 0.33 7 11 P -2.39 25 104

Best Double Coup Ie.Mo-2.2*10**17 NP1.Strike-216 Dip-21 Slip- 111 NP2: 8 70 82

10 14 39 00.39 59.274S 26.205W 61km 6.3mb ( 39 obs.)SOUTH SANDWICH ISLANDS REGIONFAULT PLANE SOLUTION: P-Woves NP1 : Strike-147 Dip-70 Slip- 90 NP2: 327 20 90

Pr i nc i poI Axes:T Pig-65 Azm- 57 P 25 237

Comment: The focol mechanism is poorly controlled ond corresponds to reverse faulting. The preferred fault pI one i s NP2.

RADIATED ENERGYNo. of sto: 5 Focol mech. M Energy 1 . 1±0.3 10 * * 14 Nm

MOMENT TENSOR SOLUTION Dep 68 No. of sto: 6 Principal Axes:

Scole 10**19 Nm T Val- 1.21 Pig-52 Azm- 92 N 0.02 22 330 P -1.23 29 227


CENTROID, MOMENT TENSOR (HRV) Doto Used: GDSNL.P.B.: 35S, 96C M.W.: 25S, 43C Cent ro i d Locot i on: Origin Time 14:39: 9.60.1 Lot 59.42S 0.01 Lon 25.78W 0.02 Dep 60.7 0.7 Hoif-durotion 5.3 Pr i nc i poI Axes:

Scale 10**19 NmT Vol- 1.25 Pig-40 Azm-104N 0.05 49 302P -1.30 9 202

Best Double Coup Ie:Mo-1.3*10** 19NP1:Strike-251 Dip-56 Slip- 24NP2: 147 70 144

10 22 58 19.68 5.500N 82.564W 10km 5.1mb ( 30 obs.) 4.7Msz ( 20 obs.) SOUTH OF PANAMACENTROID, MOMENT TENSOR (HRV) Doto Used: GDSN L.P.B.: 23S, 37C Cent ro i d Locot i on:Or igin Time 22:58:28.8 0.5 Lot 5.90N 0 05 Lon 82.38W 0.05 Dep 15.0 FIX Half-durotion 1.3

JAN 1993 PAGE 20

P r i nc i poI Axes: Scole 10»» 1 7 NmT Vol- 1.72 Pig- 8 Azm-133N 0.43 59 29P -2.15 30 227

Best Double Coup Ie:Mo-1.9*10« 17NP1:Strike-266 Dip-63 Slip- -17NP2: 3 75 -152

11 07 03 48.20 22.159S 176.562W 168km5.2mb ( 17 obs.)SOUTH OF FIJI ISLANDSCENTROID, MOMENT TENSOR (HRV)Doto Used GDSNL.P.B.: 8S. 8CCentroid Locotion:Or igin T ime 07:03:55.6 2.3Lot 21.46S 0.32 Lon 176.01W 0.21Dep 160.3 5.4 Ha If-durotion 1.0Pr i nc i poI Axes:

Scale 10..16 NmT Vol- 5.86 Pig-20 Azm-135 N -0.94 27 34 P -4.92 55 256

Best Double Coup Ie:Mo-5.4*10»»16 NP1 :Strike-262 Dip-35 Slip- -36 NP2: 23 70 -119

11 20 58 43.72 38.535N 142.596E 35km 5.2mb ( 89 obs.) 5.0Msz ( 11 obs.) NEAR EAST COAST OF HONSHU, JAPAN CENTROID, MOMENT TENSOR (HRV) Data Used: GDSN L.P.B.: 15S, 20C Centroid Locotion: Origin Time 20:58:47.7 0.8 Lot 38.84N 0.11 Lon 143.05E 0.07 Dep 33.5 4.1 Hoif-durotion 1.0 P r i nc i poI Axes:

Scale 10»*16 NmT Vol- 7.55 Pig-66 Azm-327N 0.70 13 205P -8 25 19 111

Best Double Couple Mo-7.9*10* 16NP1 Strike-180 Dip-28 Slip- 62NP2 31 66 104

11 22 22 58.99 5 366N 82 541W 33km5.1mb ( 36 obs.) 5.0Msz ( 16 obs.)SOUTH OF PANAMACENTROID. MOMENT TENSOR (HRV)Doto Used: GDSNL.P.B.: 30S, 57CCentroid Locotion:Origin Time 22:23: 1.6 0.4Lot 5.30N 0.04 Lon 82.45W 0.03Dep 15.0 FIX Half-duration 1.8P r i nc i poI Axes:

Scole 10**17 NmT Vol- 3.66 Pig- 2 Azm-316 N -0.05 74 52 P -3.61 16 225

Best Double Coup Ie:Mo-3.6*10** 17 NP1:Strike- 2 Dip-77 Slip 170 NP2; 269 80 -13

12 13 24 24.26 6 008S 127 639E 398km4.9mb ( 58 obs.)BANDA SEACENTROID, MOMENT TENSOR (HRV)Doto Used: GDSNL.P.B.: 10S, 15CCent ro i d Locot i on:Origin Time 13.24:30.8 1.0Lot 5.82S 0.07 Lon 127.95E 0.11Dep 417.0 4.1 Half-durotion 1.2P r i nc i poI Axes:

Scale 10..16 NmT Vol- 11.83 Pig-43 Azm-274 N -0.49 29 153 P -11.34 33 42

Best Double Coup Ie:Mo-1 .2*10** 17 NP1:Strike- 76 Dip-30 Slip- 12 NP2: 336 84 119

13 01 31 54.08 38.870N 142.489E 31km 5.2mb (103 obs.) 4.7Msz ( 21 obs.) NEAR EAST COAST OF HONSHU, JAPAN CENTROID, MOMENT TENSOR (HRV) Doto Used: GDSN L.P.B.: 12S, 13C Centroid Locotion: Or i gin T ime 01:31 .57.0 1 . 4

Lot 38.49N 0.16 Lon 142.25E 0.16Dep 25.0 6.8 Ho If-durotion 1.0Pr i nc i poI Axes:

Scale 10.»16 NmT Vol- 6.77 Pig-43 Azm-235 N 0.47 40 18 P -7.24 19 126


13 17 11 07.57 17.955N 76.583W 16km 5.5mb ( 73 obs.) 4.8Msz ( 20 obs.) JAMAICA REGIONCENTROID, MOMENT TENSOR (HRV) Data Used: GDSN L.P.B. : 19S, 23C Centroid Locotion: Origin Time 17:11:13.0 0.5 Lot 18.69N 0.07 Lon 76 97W 0.06 Dep 15.0 FIX Hoif-durotion 1.2 Principal Axes:

Scale 10**17 NmT Vol- 2.11 Pig-48 Azm-116N -0.28 30 345P -1.83 26 238


13 18 50 42.51 50.791S 139.505E 10km 5.9mb ( 57 obs.) 6.3Msz ( 53 obs.) SOUTH OF AUSTRALIA FAULT PLANE SOLUTION: P-Woves NP1:Strike-184 Dip-85 Slip- 10 NP2: 93 80 175

P r i nc i poI Axes:T Plg-11 Azm- 49 P 3 318

Comment: The focal mechanism is moderately well controlled ond corresponds to strike-slip faulting with a smoII r eve rse component. The preferred foult plane is not determined.

RADIATED ENERGYNo. of sto: 10 Focol mech. F Energy 1 .2±0.3*10«* 15 Nm

MOMENT TENSOR SOLUTION Dep 16 No. of sto: 13 P r i nc i poI Axes:

Scale 10.«18 NmT Vol- 3.42 Pig- 2 Azm-219N 0.20 86 92P -3.62 3 309

Best Double Coup Ie:Mo-3.5*10*»18NP1 . Strike-354 Dip-86 Slip- -1NP2: 84 89 -176

CENTROID, MOMENT TENSOR (HRV)Doto Used: GDSNL.P.B.: 31S, 75C M.W.: 28S, 49C Cen t ro i d Locot i on: Origin Time 18:50:48.9 0.1 Lot 51.04S 0.01 Lon 139.23E 0.02 Dep 15.0 FIX Hoif-durotion 4.5 P r i nc i poI Axes:

Scale 10**18 NmT Vol- 3.42 Pig- 8 Azm-222N -0.12 81 72P -3.30 4 313


15 11 06 01.96 42.982N 144.165E 112km6.1mb (113 obs.)HOKKAIDO, JAPAN REGIONFAULT PLANE SOLUTION: P-Woves NP1:Strike- 80 Dip-85 Slip- 102 NP2: 192 13 23

P r i nc i poI Axes:T Pig-49 Azm- 3 P 39 159

Comment: The focol mechanism is moderately well controlled ond corresponds to reverse faulting with o small left- loterol strike-slip component. The preferred foult plone is NP2.

15 11 06 05.95 43 300N 143 691E 102km 6.9mb ( 39 obs.) 7.1Msz ( 17 obs.)

HOKKAIDO, JAPAN REGION RADIATED ENERGYNo. of sto: 25 Focal mech. F Energy 1.9±0.3«10** 15 Nm

MOMENT TENSOR SOLUTION Dep 99 No. of sto: 27 P r i nc i pa I Axes:

Scale 10..20 Nm T Vol- 2.20 Pig-42 Azm- 7 N -0.10 9 269 P -2.10 47 169

Best Double Coup Ie:Mo-2.2*10*.20 NP1:Strike-162 Dip- 9 Slip- -16 NP2. 268 87 -99

CENTROID, MOMENT TENSOR (HRV) Doto Used: GDSNL.P.B.: 33S, SBC M.W.: 32S, 81C Cen t ro i d Locat i on: Origin Time 11:06:15.60.1 Lot 43.06N 0.01 Lon 144.29E 0.01 Dep 100.0 FIX Hoif-durotion 15.2 P r i nc i poI Axes:

Scale 10..20 Nm T Vol- 2.88 Pig-41 Azm-354 N -0.32 5 259 P -2.55 48 164

Best Double Coup Ie:Mo-2.7*10**20 NP1 :Strike-133 Dip- 6 Slip- -36 NP2: 259 86 -95

17 05 36 06.35 19.722S 168.875E 31km5.0mb ( 22 obs.) 4.8Msz ( 5 obs.)VANUATU ISLANDSCENTROID, MOMENT TENSOR (HRV)Doto Used: GDSNL.P.B.: 14S, 21CCentroid Locotion:Origin Time 05:36. 8.5 0.9Lot 19 59S FlX;Lon 168 80E FIXDep 41.5 8.4 Half-durotion 1.0Pr i nc i poI A»es:

Scole 10**16 NmT Vol- 6.54 Pig-32 Azm-172 N -0.49 10 268 P -6 05 56 13

Best Double Coup Ie.Mo-6.3*10** 16 NP1 : St r i ke-230 D i p-1 6 Slip 129 NP2: 90 78 -80

17 18 24 51.54 58.634S 26.177W 110km5.4mb ( 23 obs.)SOUTH SANDWICH ISLANDS REGIONCENTROID, MOMENT TENSOR (HRV)Data Used: GDSNL.P.B.: 15S. 23CCentroid Location:Origin Time 18:24:54.3 6.4Lot 58.30S 0.05 Lon 26.57W 0.12Dep 33.0 FIX Half-duration 1.5P r i nc i poI Axes:

Scole 10»*17 NmT Vol- 2.58 Pig-27 Azm-359 N -0.32 25 102 P -2.25 52 229

Best Double Coup Ie:Ma-2.4*10** 17 NP1:Strike- 45 Dip-29 Slip 150 NP2 289 76 -64

18 01 18 06.34 18.414N 145.734E 151 km5.6mb (110 obs.)MARIANA ISLANDSFAULT PLANE SOLUTION: P-Woves NP1:Strike-237 Dip-65 Slip 145 NP2: 131 59 -30

P r i nc i poI Axes:T Pig- 4 Azm- 2 P 42 96

Comment: The focol mechanism is moderately well controlled ond corresponds to strike slip faulting with o large normal component. The preferred foult plone is not determined.

RADIATED ENERGYNo. of sto: 14 Focol mech. F Energy 9.4±1.9*10» 12 Nm

MOMENT TENSOR SOLUTIONDep 150 No. of sto: 18Pr i nc i poI Axes:

Scole 10*.18 NmT Vol- 3.78 Pig-17 Azm-173 N 0.74 60 295 P -4.51 24 75

PAGE 21 JAN 1993

Best Double Coup Ie:Mo-4.1 * 10«» 1 8 NP1 :S t r i ke-216 Dip-61 Slip-175 NP2: 123 85 -29

CENTROID, MOMENT TENSOR (HRV)Data Used: GDSNL.P.B. : 39S, 90Cden t ro i d Loca t i on:Origin Time 01:18:10.9 0.2Lot 18.38N 0.02 Lon 146.07E 0.01Dep 157.9 0.5 Half-duration 2.9Pr i nc i pa I Axes :

Scale 10**18 NmT Val- 2.01 Pig-20 Azm-188 N 0.28 39 295 P -2.29 44 77

Best Double Coup Ie;Mo-2.2*10»»18 NP1:Strike-233 Dip-43 Slip 159NP2 : 127 76 -49

18 12 42 07.87 30.837N 90.373E 33km5.7mb (101 obs.) 5.7Msz ( 39 obs.)XIZANGCENTROID, MOMENT TENSOR (HRV)Data Used: GDSNL.P.B.: 15S, 27CCentroid Location:Origin Time 12.42:12.6 0.4Lot 30.34N 0.04 Lon 90.28E 0.06Dep 15.0 BDY Ha If-durotion 1.9P r i nc i pa I Axes :

Scale 10**17 NmT Val- 9.54 PIg« 2 Azm-272 N -1.49 23 181 P -8.06 66 7

Best Double Coup Ie:Mo-8.8*10«* 17 NP1:Strike« 25 Dip-48 Slip- -57 NP2: 161 51 -121

19 09 05 01.88 45.118S 34.996E 10km 5.4mb ( 30 obs.) 5.5Msz ( 24 obs.) PRINCE EDWARD ISLANDS REGION CENTROID, MOMENT TENSOR (HRV) Dota Used: GDSN L.P.B.: 31S, 70C Centroid Location: Origin Time 09 05: 9.8 0.1 Lot 45.025 0.02 Lon 35.40E 0.03 Dep 15 0 FIX Ho I f-durotion 2 0 P r inc i poI Axes:

Scole 10**17 NmT Vol- 7.94 Pig-10 Azm-152N -0.20 79 313P -7.74 4 62

Best Double Couple:Mo-7 8«10**17NP1:Strike-197 Dip-86 Slip- 175NP2: 288 85 10

19 14 39 26.17 38.649N 133 465E 448km6.0mb (201 obs )SEA OF JAPANFAULT PLANE SOLUTION. P-Woves NP1:Strike-315 Dip-78 Slip- -34 NP2: 53 57 -166

Principal Axes :T Pig-14 Azm- 8 P 32 269

Comment The focal mechanism is mode rotely well controlled ond corresponds to strike-slip faulting with o large normal component. The preferred foult pI one is not determined

RADIATED ENERGYNo. of sta: 12 Focal mech. F Energy 3.1±0.9 * 10**13 Nm

MOMENT TENSOR SOLUTIONDep 453 Na. of sta: 22Pr i nc i pa I Axes:

Scale 10**19 Nm T Val- 1.09 Pig-11 Azm- 12 N -9.17 64 125 P -0.92 23 277

Best Double Coup Ie:Mo-1.0*10**19 NP1:Strike- 56 Dip-65 Slip 171 NP2: 323 82 -25

CENTROID, MOMENT TENSOR (HRV)Data Used: GDSNL.P.B.: 30S, 83C M.W.: 26S, 54CCent ro i d Locot i on:Origin Time 14:39:32.6 0.1Lot 38.70N 0.01 Lon 133.96E e.01Dep 461 6 1.0 Half-duration 4.4P r i nc i poI Axes:

Scale 10*»18 NmT Vol- 6.45 Pig-15 Azm- 11N -0.28 54 122P -6.18 32 272

Best Double Coup Ie:Mo-6.3*10«* 18NP1:Strike- 56 Dip-56 Slip 166NP2: 319 79 -34

19 21 14 49.96 18.123S 178.066W 593km5 2mb ( 57 abs.)FIJI ISLANDS REGIONCENTROID, MOMENT TENSOR (HRV)Data Used: GDSNL P.B.: 95, 10CCen t ro i d Locot i on:Origin Time 21:14:54.6 2.2Lot 18.01S 0.10 Lon 178.00W 0.18Dep 625.0 9.6 Ho If-duratian 1.4Pr i nc i pa I Axes:

Seale 10*»16 Nm T Val- 10.85 Pig-23 Azm- 92 N 3.49 34 198 P -14.34 47 334

Best Double Coup Ie:Mo-1.3*10** 17 NP1:Strike-137 Dip-37 Slip 157 NP2: 28 76 -55

19 23 06 10.29 1.221N 126.072E 27km5.8mb ( 95 obs.) 5.4Msz ( 43 abs.)NORTHERN MOLUCCA SEACENTROID, MOMENT TENSOR (HRV)Dota Used: GDSNL.P.B.: 315, 61CCen t ro i d Locat i on:Origin Time 23:06:18.0 0.2Lot 1 47N 0.03 Lon 126.28E 0.03Dep 47.5 1.9 Ha If-durotian 2.3P r i nc i poI Axes:

Scale 10»*17 Nm T Vol- 7.42 Pig-83 Azm-140 N 0.42 2 38 P -7.84 7 308

Best Double Coup Ie:Mo-7.6*10** 17 NP1:Strike- 36 Dip-38 Slip- 88 NP2: 219 52 92

20 02 30 54.73 3.144N 97.633E 68km6 2mb (184 obs.) 5.7MSZ ( 38 obs.)NORTHERN SUMATERA, INDONESIAFAULT PLANE SOLUTION: P-Woves NP1:Strike-295 Dip-82 Slip- -90 NP2: 115 8 -90

Principal Axes:T Pig-37 Azm- 25 P 53 205

Comment: The focol mechanism is poorly controlled ond corresponds to normal faulting. The preferred fault pI one is NP1 .

RADIATED ENERGYNo. of sto: 7 Focol mech. M Energy 9.7±3.5* 10* 12 Nm

MOMENT TENSOR SOLUTIONDep 63 No. of s ta: 9Principal Axes:

ScoIe 1e**18 NmT Vol- 1.96 PIg-25 Azm- 3 N 0.04 27 106 P -2.00 52 237

Best Double Coup Ie:Mo-2.0*10** 18 NP1: Strike- 50 Dip-32 Slip 150 NP2: 294 75 -62

CENTROID, MOMENT TENSOR (HRV)Data Used: GDSNL.P.B.: 34S, 84C M.W.: 24S. 36CCen t ra i d Locat i on:Or igin Time 02:30:57.3 0.2Lot 3.04N 9.91 Lon 97.56E 0.02Dep 57.0 0.8 Ha If-durotion 2.9P r i nc i pa I Axes:

Scale 10»*18 Nm T Val- 1.77 Pig-27 Azm- 31 N 0.13 2 122 P -1.90 63 217

Best Double Coup Ie:Mo-1.8*10** 18 NP1:Strike-115 Dip-19 Slip- -98 NP2: 303 72 -87

20 03 03 38.75 32.263S 178.178W 17km 5.3mb ( 14 obs.) 5.5Msz ( 4 obs.) SOUTH OF KERMADEC ISLANDS CENTROID. MOMENT TENSOR (HRV)

Data Used: GDSN L.P.B.: 16S. 22C Cen t ra i d Loca t i on: Or i gi n T ime 03:03:41.9 1.2 Lot 32.77S FIX;Lon 178.12W FIX Dep 15.0 FIX Half-duration 1.7 Pr i nc i pa I Axes:

Scale 10**17 Nm T Val- 8.06 Pig-51 Azm-276 N -1.08 2 9 P -6.98 39 101

Best Double Cauple:Ma-7.5*10*»17 NP1:Strike-210 Dip- 6 Slip- 111 NP2: 9 84 88

20 04 08 26.57 8.318S 121.377E 33km 5 8mb ( 77 obs.) 5.3Msz ( 21 abs.) FLORES REGION, INDONESIA CENTROID, MOMENT TENSOR (HRV) Data Used: GDSN L.P.B.: 32S, 62C Centraid Location: Origin Time 04:08:36.4 0.4 Lot 7.79S 0.03 Lon 121.72E 0.05 Dep 58.4 3.5 Half-duration 1.9 P r i nc i pa I Axes:

Scale 10**17 NmT Vol- 4.53 Pig-24 Azm- 77N 3.08 65 233P -7.61 9 343

Best Double Coup Ie:Mo-6.1 * 10** 17NP1:Strike-117 Dip-67 Slip- 169NP2: 212 80 23

20 14 49 12.31 38.541N 29.276W 10km5.0mb ( 63 obs.) 4.6Msz ( 9 obs.)AZORES ISLANDSCENTROID, MOMENT TENSOR (HRV)Data Used: GDSNL.P.B.: 17S, 32CCentraid Location:Origin T ime 14:49:18.8 0.5Lot 38.39N 0.06 Lon 29.34W 0.11Dep 15.0 FIX Half-duration 1.2P r i nc i poI Axes:

Scale 10**17 NmT Val- 1.43 Pig-16 Azm- 20 N -0.49 16 285 P -0.94 67 151

Best Double Coup Ie:Mo-1.2*10**17 NP1:Strike-132 Dip-33 Slip- -59 NP2: 276 63 -109

20 17 31 15.57 7.205S 128.566E 33km 6.2mb ( 83 obs.) 6.2Msz ( 50 obs.)BANDA SEA RADIATED ENERGYNo. of sta: 10 Focol mech. M Energy 7.2±1.9*10** 14 Nm

MOMENT TENSOR SOLUTION Dep 21 Na. of sta: 16 Pr i nc i pa I Axes:

Scale 10**18 NmT Val- 4.58 Pig-11 Azm-271N 0.03 75 133P -4.60 10 3

Best Double Coup Ie:Mo-4.6*10** 18NP1:Strike- 47 Dip-75 Slip- 1NP2: 317 89 165CENTROID, MOMENT TENSOR (HRV)Doto Used: GDSNL.P.8.: 35S, 89C M.W.: 31S, 62C Cent ra i d Loca t i on: Or igin T ime 17:31:17.9 0.2 Lot 7.15S 0.01 Lon 128.53E 0.01 Dep 17.3 1.2 Half-duration 4.1 Pr i nc i pa I Axes:

Scale 10**18 Nm T Vol- 4.90 Pig- 2 Azm-100 N 0.01 78 200 P -4.91 12 9


21 13 43 15.24 78.873N 125.638E 29km 5.1mb ( 90 abs.) 5.0Msz ( 35 abs.) EAST OF SEVERNAYA 2EMLYA, RUSSIA CENTROID, MOMENT TENSOR (HRV) Data Used: GDSN L.P.B.: 27S, 43C Cen t ro i d Loca t i on: Origin Time 13:43:17.7 0.2

JAN 1993 PAGE

Lot 78.74N 6 64 Lon 125.36E 6.17Dcp 15.8 FIX Hoif-durotion 1.4Pr i nc i poI Axes:

Scolc 16**17 NmT Vol- 1 96 PI g- 4 Azm- 75 N 0.34 24 167 P -2 30 65 337

Best Double Coup Ic.Mo-2.1 * 10** 17 NP1.Strike-142 Dip-47 Slip 125NP2: 53 -59

22 18 83 46.95 7.075S 128.666E 33kin5 4mb ( 53 obs.)BANDA SEACENTROID. MOMENT TENSOR (HRV)Doto Used: GDSNL.P.B.: 18S. 29CCent ro i d Locot i on:Origin Time 10:03:46.4 1.1Lot 7.22S 8.09 Lon 128-23E 8.88Dep 26.8 5.8 Ho If-durotion 1.8Pr i nc i poI Axes:

Scolc 10**16 MmT Vol- 9.16 Pig- 1 Azm-272 N 2.72 63 188 P -11.87 27 2

Best Double Coup Ie:Mo-1.1 * 18** 17 NP1:Strike- 44 Dip-71 Slip- -19 NP2: 140 72 -168

23 08 59 25.06 24.114N 121.709E 29km5.4mb (184 obs.) 5.4Msz ( 34 obs.)TAIWANCENTROID, MOMENT TENSOR (HRV)Doto Used: GDSNL.P.B.: 27S, 46CCentroid Location:Origin Time 88:59:30.1 0.2Lot 24.22N 0.03 Lon 122.06E 0.03Dep 29.8 2.1 Half-duration 1.8Pr i nc i poI Axes:

Scale ie**17 NmT Vol- 3.93 Pig-56 Azm-263 N 0.62 18 9 P -4.55 31 186

Best Double Coup Ie:Mo-4.2 18* 17 NP1:Strike-228 Dip-17 Slip- 130 NP2- 7 77 79

23 18 22 11.68 54.475N 161 633W 23km5.7mb (133 obs.) S.IMsz ( 52 obs.)ALASKA PENINSULACENTROID, MOMENT TENSOR (HRV)Data Used: GDSNL.P.B.: 34S. 61CCent ro i d Locot i on:Origin Time 18:22:16.6 0.2Lot 54.16N 0.03 Lon 161.50W 0.05Dep 32.2 2.5 Half-duration 1.6Pr i nc i poI Axes:

Scale 10»*17 NmT Vol- 3.05 Pig-56 Azm-335 N 0.14 1 67 P -3.19 34 158

Best Double Couple Mo-3.1 * 16» 17 NP1:Strike-253 Dip-11 Slip- 97 NP2: 66 79 B9

24 21 38 50.96 45.768N 142.162E 306km5.8mb (181 abs.)HOKKAIDO, JAPAN REGIONCENTROID, MOMENT TENSOR (HRV)Data Used: GDSNL.P.8.: 17S, 28CCent roi d Locoti an:Origin Time 21:30:54.5 8.6Lot 45.64N 0.06 Lan 142.08E 0.09Dep 312.3 3.2 Half-duration 1.3P r i nc i pa I Axes:

Scale 10*»16 NmT Val- 9.20 Pig-18 Azm- 12 N 1.07 31 113 P -10.27 53 256

Best Double Coup Ie:Mo-9.7*10* 16 NP1:Strike- 63 Dip-38 Slip 147 NP2: 306 70 -56

25 14 46 09.98 15.211S 173.498W 37km 5.4mb ( 58 obs.) 5.6Msz ( 33 obs.) TONGA ISLANDSCENTROID, MOMENT TENSOR (HRV) Data Used: GDSN L.P.B.: 27S, 5lC Centroid Location:Origin Time 14:46:16.5 0.3 Lot 15.01S 0.05 Lon 173.36W 0.63 Dep 41.4 3.4 Half-duration 1.9

Pr i nc i poI Axes. Scale 16**17 Nm T Vol- 4.82 Pig-44 Azm-149 N -0 56 5 243 P -4.26 46 338

Best Double Coup Ie:Mo-4.5*10** 17 NP1 :St r i ke-169 Dip- 5 Slip 164 NP2: 63 89 -85

26 20 32 06.97 23.027N 101.062E 33km5.4mb (111 obs.) 5.6Msz ( 28 obs.)YUNNAN, CHINACENTROID, MOMENT TENSOR (HRV)Data Used: GDSNL.P.B.: 26S, 40CCent ro i d Lacot i on:Origin Time 20:32: 8.7 0.4Lot 22.86N 0.04 Lon 100.88E 0.05Dep 24.4 4.2 Half-duration 1.4Pr i nc i pa I Axes:

Scale 10»*17 Nm T Vol- 2.92 Pig- 2 Azm-275 N 0.30 80 172 P -3.22 10 6

Best Double Coup Ie:Mo-3.1*10**17 NP1:Strike- 50 Dip-82 Slip- -5 NP2: 141 85 -172

28 20 51 54.14 3.202S 126.609E 33km5.0mb ( 26 obs.)BURU, INDONESIACENTROID, MOMENT TENSOR (HRV)Data Used: GDSNL.P.B.: 14S, 17CCent raid Loca t i an:Origin Time 20:51:48.7 0.9Lot 3.22S FIX;Lon 126.65E FIXDep 15.0 FIX Half-durotion 1.4Pr i nc i poI Axes:

Scale 16**16 NmT Vol- 9.21 Pig-18 Azm-294 N -0 32 61 169 P -8.89 22 32

Best Double Coup Ie:Mo-9.1 16» 16 NP1:Strike- 72 Dip-61 Slip- -3 NP2: 164 87 -151

Comp iled by Pingsheng Chong, Will is S. Jacobs, Stuort K. Koyanagi, Christina Woverly J. Person, Bruce W. Presgrove and William H. Schmieder.

Lavonne, John H. Minsch, Russell E. Needham,

GEOGRAPHIC REGION NAME CHANGES

Beginning with this issue, the following changes have been made to the geographic region names used in this publication. These changes were mode under the constraint of making no change to the boundaries af the regions nor to their correspond! FI inn EngdohI geographic region numbers.

ng

F-E GEOG REG. NO OLD NAME OF REGION NEW NAME OF REGION

547724

CZECHOSLOVAKIABALTICS-BYELARUS-NW RUSSIA REG.

CZECH AND SLOVAK REPUBLICS BALTICS-BELARUS-NW RUSSIA REG.

PAGE 23

10 January 1993 14:39:00.39 South Sandwich Islands Region

HRV CLHZ)Pdiff x33

BDF (LHZ)

RSNY (LHZ)Pdiff x46

ZOBO (LHZ)P x3 V '

RSSD (LHZ)Pdiff x60

WMOK (LHZ)Pdiff x!6

TUC CLHZ)Pdiff x27

CMB (LHZ)Pdiff x44

PAS (LHZ)Pdiff x25

M and B0 l Z

Time (min)

RAR (LHZ)P x8 V '

COL (LHZ)PKPdf x8

PAB (LHZ) Pdiff x20

YSS (LHZ)PKPdf x6

SLR (BHZ)P xl V '

_A A A f\s^s MDJ (LHZ)V V V ^^ PKPd' ^8

CHTO (LHZ)Pdiff x44

SSE (BHZ)PKPdf xl

TAU (LHZ)P x5 V x

SPA (BHZ)P xl

30

01334Time (min)

KONO (LHZ)P x2 '

PAB (LHZ)P x5

GRFO (LHZ)P x3 v '

HIA (LHZ)p xi '

BJIJLHZ)

LZH (BHZ)

LSA (BHZ) p xs v 7

SSE (BHZ) p xi '

&70

KMI (LHZ)

M and B

15 January 1993 11:06:05.95 Hokkaido, Japan Region

0 1 Z

Time (min)

MCWV (LHZ)P x6

QIZ (LHZ)Fx2 v '&70

COL (LHZ)P x2 v '

GOL (LHZ)P x26

LON (LHZ)P x5 V '

GSC (LHZ)P x6 V '

PAS (BHZ)P x5 V '

KIP (LHZ)P x8

RAR (LHZ)P x5 V '

SPA (LHZ)PKPdf x58

CHTO (LHZ)P x5 V '

01334

Time (min)

PAGE 24

19 January 1993 14:39:26.17 Sea of Japan

CCM (LHZ)Pdiff x94

KONO (LHZ)P x74

HIA (LHZ)P xlO

GRFO (LHZ)P x38

LSA (LHZ)P x!4

KMI (BHZ)

CHTO (LHZ)P xl8 V '

01234Time (min)

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PAGE 26

SIGNIFICANT EARTHQUAKES OF THE WORLD. 1992

Earthquakes of magnitude 6.5 or greater or ones that caused fatalities, injuries or substantial damage.

BRK Berkeley. PAS Pasadena. ATH Athens, Greece. BJI Beijing, China. BRA Bratislava, Slovak Republic. GEN Genoa, Itol; ISK Istonbul-Kandi I I i , Turkey. KRA Krakow. Poland. LOG Laboratoire de Detection et de Geophysique, France. LJU Ljubljana, Yugoslavia. SJR San Jose, Costa Rica. STR Strasbourg, France. THE ThessoI oniki, Greece. TRl Trieste, Italy. TTG Titagrad, Yugoslavia. VKA Vienna-KobenzI, Austria. ZAG Zagreb, Yugoslavia.

DATE ORIGIN TIME GEOGRAPHICUTC COORDINATES

HR MN SEC LAT LONG

DEPTH MAGNITUDES SD NO.GS STA

MB Msz USED


FEB 01 19 04 04 5 35.106 N 139.644 E 100 D 5 6

FEB 04 01 58 39.7* 7.13B S 189.067 E 58 » 5.0 4.4

FEB 13

FEB 14

FEB 27

MAR 02

MAR 04

MAR 13

APR 06

0.9 436 NEAR S. COAST OF HONSHU, JAPAN, mb 5.7 (BRK). Mo-5.5»10*»17 (HRV). Ma-1.3*10** 18 Nm (PPT). Thirty-seven people injured and damage (V JMA) in the Tokyo area. Felt (IV JMA) at Chibo, Konagawo and Oshima; (III JMA) at Kofu, Mi to, Utsunomiyo ond Yokohama; (II JMA) at Maeboshi. Felt as far north as Fukushimo.

1.1 24 JAWA, INDONESIA. Mo-4.5»18»»16 (HRV). One personinjured, 800 houses destroyed, 700 damaged and1,500 families left homeless in the Brebes area.

01 29 13.1 15.894 S 166.318 E 10 G 6.1 6.8 1.2 381 VANUATU ISLANDS. Ms 7.1 (BRK). Ma-1.8»10»*19 (HRV).Mo-4.0*ie*»19 Nm (PPT). Felt at Part Vila.

17 28 23.0* 26.420 S 27.430 E 5 G 2 REPUBLIC OF SOUTH AFRICA. <MACRO>. mbLg 3.4 (BUL).Four people killed and 4 others injured ot the WesternDeep Levels South Mine near Car Itonvi I Ie.

20 05 23.8 6.191 S 147.576 E 39 G 5.9 6.6 1.1 260 EASTERN NEW GUINEA REG., P.N.G. Ms 6.5 (BRK).Mo-1.1»10*»19 (HRV). Mo-7.9*10*»18 Nm (PPT). Felt at Loe.

12 29 39.5 52.915 N 159.886 E 39 G 6.5 6.8

MAR 04 03 49 54.8 3.008 S 147.882 E 19 G 6.0 6.5

11 57 53.0 31.726 N 50.778 E 18 D 4.9 4.6

MAR 07 01 53 37.7 10.218 N 84.323 W 79 G 6.2

17 18 39.9 39.710 N 39.605 E 27 D 6 2 6.8

MAR 15 16 16 24.2 39.532 N 39.929 E 21 D 5.5 5.8

1.1 611 OFF EAST COAST OF KAMCHATKA. Ms 6.7 (BRK).Mo-6.4»10*»17 Nm (HRV). Mo-2.6*10» 19 Nm (GS). Mo-3.2»10**l9 Nm (PPT). Felt (V) at Pet ropavIovsk-Kamchatsk i y, Russia.

1.3 299 BISMARCK SEA. Ms 6.4 (BRK). Ma-3.8»10»»18 Nm (GS). Mo-5.2»18**18 Nm (HRV). Ma-1.3*10»*19 Nm (PPT).

1.2 213 NORTHERN IRAN. Mo-5.7»10*»16 Nm (HRV). At least6 people killed, 50 injured ond 300 homes destroyed in the Lardegon-ArdaI area. Landslides blocked roads in the epicentrol region.

1.0 572 COSTA RICA. MD 5.6 (SJR), 5.6 (UPA). Mo-8.1 * 10*»18 Nm (GS). Mo-6.5»10**18 Nm (HRV). Mo-4.0»10»»18 Nm (PPT) One person died of a heart attack and damage at San Jose. Felt strongly throughout Costa Rica. Felt (III) at Chonguinola ond David, Panama.

1.1 584 TURKEY. MS 6.9 (BRK). M0-1.3»10**19 Nm (GS).Mo-1.2»10**19 Nm (HRV). Mo-5.2*10»*19 Nm (PPT). At least 498 people killed, 2,000 injured, some missing; 2,200 houses heavily damaged at Erzincan. Landslides and avalanches blocked o number of roods in the epicentrol orea. Felt strongly in many ports of northeastern Turkey.

1.2 367 TURKEY. MD 6.0 (ISK). Mo-3.1»10*»18 Nm (GS).Mo-7.6»10*»l7 Nm (HRV). Ma-4.0»10»*18 Nm (PPT). Additional damage in the Erzincan area. Felt strongly in the epicentral area.

APR 03 03 19 51.4 5.696 S 151.164 E 27 G 5.8 6.5 8.9 434

13 54 40.2 50.724 N 138.892 W 20 G 6.0 6.8

APR 13 01 20 00.8 51.153 N 5.798 E 21 D 5.5 5.2

1.0 322

1.2 404

NEW BRITAIN REGION. P.N.G. Ms 6.9 (BRK). ML 6.6 (RAB), 6.2 (PMG). Ma-6.9*10**18 Nm (GS). Mo-6.5*10** 18 Nm (HRV). Ma-1.0»10*»19 Nm (PPT). Felt (IV) at Robaul.

VANCOUVER ISLAND REGION. Mo-1.2*10*»19 Nm (GS).Mo-1.2»10»*19 Nm (HRV). Mo-3.2*10»*19 Nm (PPT). Feltat Port Hardy and Port McNeill, British Columbia.

THE NETHERLANDS. ML 5.9 (BNS), 5.9 (UCC), 5.8 (STR).5.8 (BGS). 5.5 (LOG). MD 5.8 (VIE). Mo-1.3*10* 17 Nm

(HRV). One person died of a heart attack at Bonn, Germany. Twenty people injured and some buildings damaged (VIII) at Roermand, Netherlands ond 25 people injured and some buildings damaged (VII) at Heinsberg, Germany. Damaged also reported at Bonn and Kaln, Germany ond in Limburg Province, Belgium. Felt strongly in many parts of northwestern Germany, eastern Belgium and southern Netherlands. Felt in northeastern France. Also felt throughout much of southeastern England and in the Liverpoo I Monchester orea. United Kingdom.

APR 23 04 50 23.2* 33.961 N 116.318 W 12 5.7 6.3 392 SOUTHERN CALIFORNIA. <PAS-P>. ML 6.1 (PAS).Mo-2.4»18**l8 Nm (GS). Mo-2.1 * 10** 18 Nm (HRV).

Ma-5.0*10**18 Nm (PPT). Thirty-two people were treated for minor injuries. Light to moderate damage (VII) at Joshua Tree and (VI) ot Angelus Oaks, Banning, Cathedral City, Caochella, Desert Hot Springs, India, Palm Desert, Polm Springs, Pianeertown, Rancha Mirage, Twentynine Polms and Yucca Valley. Felt strongly in many ports of southern California. Felt from Son Diego, California to Las Vegos, Nevada and from Santo Barbara. California to Yuma, Arizona. Also felt at Phoenix, Arizona and in Boja California, Mexico.

PAGE 27

DATE ORIGIN TIME GEOGRAPHIC DEPTH MAGNITUDES SD NO. REGION, CONTRIBUTED MAGNITUDES AND COMMENTSUTC COORDINATES GS STA

HR MN SEC LAT LONG MB Msz USED

APR 23 15 32 49.1 22.418 N 98.852 E 18 D 5.9 6.3 1.1 406 MYANMAR-CHINA BORDER REGION. Mo-1.9*10» 18 Nm (HRV)Mo-4.0»10* 18 Mm (PPT). One child injured ond slight damoge in Yunnon Province, China. Felt in northern Thailand ond by people in toll buildings in Bangkok, Thailand. Also felt in Myanmor.

APR 25 18 06 04.24 40.368 N 124.316 W 15 6.3 7.1 735 NEAR COAST OF NORTHERN CALIFORNIA. <GM-P>.Mo-5.1»10»»19 Nm (GS). Mo-6.7»10* 19 Nm (HRV).

Mo-4.0»10»»19 Nm (PPT). Ninety-eight people injured and considerable damage in southwestern Humboldt County. Preliminary estimate of damoge in this areo from the series of earthquakes is 66 million U.S. dollars. Maximum intensities (VIM) ot Ferndale, Honeydew, Petrolio, Rio Dell and Scotio; (VII) at Fortune and Loleta; (VI) ot Eureka. Landslides and rockfalls occurred in the Honeydew PetroIia oreo. Liquefaction was noted in areas of the Eel ond Mottole River Valleys. Felt throughout much of northern Californio as far south as San Francisco ond southeast to Corson City and Reno, Nevado. Also felt in many areos of southern Oregon. Strong-motion records indicate peak horizontal accelerations of 1.3g ot Cape Mendocino and 0.69g at Petrolia. A tsunomi was generated with maximum wave heights (peak-to-trough) of 1.1 m. at Crescent City, 0.2 m. ot Arena Cove ond 0.17 m. at Pt. Reyes, Californio; 0.2 m. ot Port Orford, Oregon; 0.15 m. at Kahului ond 0.1 m. at Hilo, Howaii.

APR 26 07 41 39.74 40.415 N 124.603 W 20 5.9 6.6 644 NEAR COAST OF NORTHERN CALIFORNIA. <GM-P>.Mo-6.0»10»»18 Nm (HRV). Mo-2.0»10* 19 Nm (PPT). This earthquake caused additianal damage in the Ferndale, Fortune ond Petrolia oreas. A fire caused by o broken gos mo in destroyed much of the business district of Scotia. Felt throughout much af northern Californio.

APR 26 11 18 25.74 40.378 N 124.575 W 22 6.5 6.6 757 NEAR COAST OF NORTHERN CALIFORNIA. <GM-P>.Mo-1.2*10**19 Nm (GS). Mo-1.0*10* 19 Nm (HRV). Mo-3. 2* 10»»19 Nm (PPT). This earthquake caused additional damoge in the Ferndole, and Petrolia areas. Felt throughout much of northern California, south as for as Solinos, Santa Cruz and San Francisco. Also felt in sou the rn Oregon.

MAY 12 18 05 42.6 16.524 S 172.367 W 15 G 6.4 6.8 1.1 583 SAMOA ISLANDS REGION. Ms 7.0 (BRK). Mo-9.5«10*»18 Nm(GS). Mo-1 .2»16»*19 Nm (HRV). Mo-2.0»10» 1 9 Nm (PPT). Felt in American Somoo ond Western Somoa.

MAY 15 07 05 05.3 6.075 S 147.572 E 58 G 6.2 1.1 420 EASTERN NEW GUINEA REG., P.N G. Us 7.1 (BRK).Mo-7.7»10»»19 Nm (GS). Mo-8.1»10» 19 Nm (HRV). Mo-6.3»10* 19 Nm (PPT). Slight domoge ot Lae.

MAY 15 68 08 02 9 41.619 N 72.429 E 50 5.7 6.2 1.0 406 KYRGYZSTAN. Three people killed. 5.500 housescompletely destroyed ond more than 4,000 houses damaged (VII) in the Osh oreo. Felt (VI) at Andizhan, (V) at Fergono, (IV) ot Nomongon ond (III) ot Tashkent, Uzbekistan. Also felt (III) ot Dzhambul and (II) at Chimkent ond Almo-Ata, Kazakhstan. Landslides reported ot Karosu and Uzgen.

MAY 17 09 49 19.1 7.239 N 126.645 E 33 G 6.2 7.1 1.2 533 MINDANAO, PHILIPPINE ISLANDS. Ms 7.0 (BRK).Mo-4.4»10»»19 Nm (GS). Mo-4.9*10* 19 Nm (HRV). Mo-7.9»16»»19 Nm (PPT). Felt (V RF) ot Bislig, (IV RF) ot Cogoyon de Oro, (III RF) ot Polo ond (II RF) at Moc ton.

MAY 17 10 15 31.3 7.191 N 126.762 E 33 N 6.4 7.5 1.1 486 MINDANAO, PHILIPPINE ISLANDS. Ms 7.5 (BRK).Mo-9.9»10*»19 Nm (GS). Mo-8.3 10* 19 Nm (HRV). Mo-1.3»16»»26 Nm (PPT). Some minor domoge at Tandag and Bislig. Felt (V RF) at Cagayan de Oro, (III RF) at Polo ond (II RF) at Mactan. Small tsunomi generated.

MAY 19 01 26 44.6 13.842 N 44.030 E 10 G 4.5 0.8 43 WESTERN ARABIAN PENINSULA. Several people injured ondot leost 20 houses destroyed in the Sanao Mountain oreo, Yemen.

MAY 20 12 20 32.8 33.377 N 71.317 E 16 G 6.0 6.0 1.1 432 PAKISTAN. Mo-2.7»10» 18 Nm (GS). Mo-1.4.10» 18 Nm(HRV). At leost 36 people killed and 100 injured in the Peshowar ond Kohat Districts, including 20 people killed at Shakkar Khel. At leost 400 houses destroyed in the Kohat District. Felt at Islamabad and Lahore. Also felt in the Srinagar area, Kashmir ond in par^s of nor the r n India.

MAY 21 04 59 57.5 41.604 N 88.813 E 0 G 6.5 5.0 0.8 585 SOUTHERN XINJIANG, CHINA. Probable underground nuclearexplosion.

MAY 25 16 55 04.1 19.613 N 77.872 W 23 G 6.3 6.9 0.9 492 CUBA REGION. Ms 7.0 (BRK). Mo-2.0»10* 19 Nm (HRV).Mo-5.0»10* 19 Nm (PPT). Forty people injured ond more than 820 buildings damaged in the Pit on Manzani I Io area. Felt at Guantonamo and in most of eastern Cuba as far away os Sancti Spiritus. Also felt on Jamaica.

MAY 27 05 13 38.8 11.122 S 165.239 E 19 G 6.3 7.0 0.9 456 SANTA CRUZ ISLANDS. Ms 7.3 (BRK). Mo-3.4»16» 19 Nm (GS).Mo-3.9*10»»19 Nm (HRV). Mo-1.0»10»»20 Nm (PPT). Felt strongly at La to Station, Santa Cruz. A small tsunomi was observed.

PAGE 28

DATE ORIGIN TIME GEOGRAPHIC DEPTH MAGNITUDES SD NO. REGION, CONTRIBUTED MAGNITUDES AND COMMENTSUTC COORDINATES GS STA

HR MN SEC LAT LONG MB Msz USED

JUN 25 06 38 51.8 28.314 S 176.716 W 20 G 6.1 6.5 1.2 398 KERMADEC ISLANDS REGION. Mo-6.5*10**18 Nm (GS).Mo-6.5»18»»18 Nm (HRV). Mo-1.3*10»* 19 Nm (PPT). Felt (IV) on RoouI IsIond.

JUN 28 11 57 34. Mt 34.201 N 116.436 W 1 6.2 7.6 523 SOUTHERN CALIFORNIA. <PAS-P>. Mo-6.7*10**19 Nm (GS).Mo-1.1*10**20 Nm (HRV). Mo-2.0»18»»2e Nm (PPT).

One person was ki I led at Yucco Valley, two people died of heort ottocks, more than 400 people were injured and substantial damage occurred in the Landers-Yucca Valley area. Maximum intensity IX. Preliminory estimate of domoge for this earthquake plus the following magnitude 6.7 event at 1505 UTC is 92 million U.S. dollors. Felt throughout southern California, southern Nevada, western Arizona ond southern Utah. Felt in high-rise buildings as far north os Boise. Idaho ond os far east as Albuquerque, New Mexico and Denver, Colorado. Surface faulting observed along o 70-kilometer segment from Joshua Tree to neor Barstow with as much os 5.5 meters of horizontal displacement ond os much os 1.8 meters of vertical displacement. Seiches were reported os for north as Lake Union, Washington and as far eost as Aurora, Colorado and Corpus Christi. Texas.

JUN 28 15 05 30.74 34.203 N 116.827 W 5 G 6.3 6.7 464 SOUTHERN CALIFORNIA. <PAS-P>. Mo-6.8*1e»»18 Nm (HRV).Mo-2.0*10*»19 Nm (PPT). Some people injured, substantial damage ond landslides in the Big Bear Lake and Big Beor City areas. Maximum intensity VIII. Felt throughout much of southern California and in parts of southern Nevodo and western Arizona.

JUL 09 01 43 57.64 34.239 N 116.837 W 0 5.6 5.2 272 SOUTHERN CALIFORNIA. <PAS-P>. MD 5.3 (PAS). ML 5.7(BRK). Mo-1.1*ie*»17 Nm (HRV). At least 16 people injured in the Big Beor Lake area. Slight damage (VI) ot Angelas Oaks, Big Beor City, Rimforest ond Sugorloaf. Felt (V) at Crest Pork, Forest Foils, Highland, Lo Ouinto, Moreno Valley, Palm Springs, Placentia, Romono, Santo Ano, Skyforest, Twin Peaks and Victorville. Felt in Los Angeles, Orange, Riverside, San Bernordino ond San Diego Counties. Rockfalls ond landslides occurred in the Big Beor Lake area.

JUL 18 09 31 27.5 44.695 N 149.482 E 20 G 6.2 6.5 1.0 575 KURIL ISLANDS. Ms 6.1 (BRK). Mo-6.6»18** 18 Nm (GS).Mo-7.4*18**18 Nm (HRV). Mo-1.3*10** 19 Nm (PPT).

JUL 14 04 26 26.6 39.255 N 41.754 E 18 D 4.5 1.3 73 TURKEY. Fifteen houses collapsed and 27 houses slightlydamaged ot Halilcavus, Minis, Kizilohme t, Kongur. Ovocevirme, Pormoksiz and Suvaron. Felt ot Erzurum, Mus ond Vor to.

JUL 18 08 36 58.7 39.419 N 143.330 E 29 G 6.2 6.9 1.0 506 OFF EAST COAST OF HONSHU, JAPAN. Ms 7.0 (BRK).Mo-2.3»10*.19 Nm (GS). Mo-2.7 * 10»* 19 Nm (HRV). Mo-2.5*10»*19 Nm (PPT). Felt (III JMA) ot Aomori, Hochinohe, Ishinomoki, Miyoko, Sokato ond Sendoi; (II JMA) ot Akito ond Fukushimo; (I JMA) ot Kofu, Tokyo, Toteyomo ond Utsunomiyo, Honshu. Also felt (II JMA) at Kushiro, Nemuro and Obihiro, Hokkaido. Tsunami generated with maximum wove heights (peek-to-trough) of 46 cm. at Ofunoto, 42 cm. at Miyoko, 28 cm. at Aikowa and 24 cm. ot Hochinohe.

JUL 20 07 46 46.7 78.562 N 5.523 E 10 G 5.7 6.3 1.5 249 SVALBARD REGION. Ms 6.5 (BRK). Mo-1.0*10* 19 Nm (GS).Mo-1.3»10»»19 Nm (HRV). Mo-2.5*10»»19 Nm (PPT).

AUG 02 05 50 11.6 0.883 S 127.582 E 19 G 5.8 6.1 1.1 288 HALMAHERA, INDONESIA. Ms 6.6 (BRK). Mo-3.1 10..18 Nm (GSMO-2.6*10»»18 Nm (HRV). Mo-1.3»10»»19 Nm (PPT).

AUG 07 18 19 20.4 57.589 N 142.846 W 14 G 6.3 6.6 1.0 579 GULF OF ALASKA. ML 6.4 (AEIC). Ms 6.7 (BRK).Mo-2.2*10*»19 Nm (GS). Mo-1 .8*10» 1 9 Nm (HRV).

Mo-5.0»10**19 Nm (PPT). Felt strongly ot Yokutot. Felt (V) at Fort Richardson; (IV) at Cooper Lending, Pelican ond Whittier; (III) at Chitina. Chugiak, Cordova. Elfin Cove, Juneou, Korluk, Lorsen Bay, Moose Poss, Petersburg, Skogwoy ond Skwentna; (II) ot Anchorage. Felt throughout much of southern and southeastern Alaska. Also felt ot Corcross ond Whitehorse, Yukon Territory, Canodo ond ot Pleosont Comp, British Columbia, Canada.

AUG 19 02 04 37.4 42.142 N 73.575 E 27 G 6.6 7.4 1.1 636 KYRGYZSTAN. Ms 7.5 (BRK). Mo-9.1 10»*19 Nm (GS).Mo-7.7»10»»19 Nm (HRV). Mo-5.8»10»»19 Nm (PPT). An

es t i ma ted 75 people killed, including 14 killed by landslides in Toluk. Several villages, including Toluk, were destroyed (IX) in the Susamyrtau Mountains and at least 8,200 dwellings were destroyed. Felt (VII) ot Andizhan, Chimion ond Namangan, Uzbekistan. Structural damage (VI) occurred to buildings ot Bishkek, Kyrgyzston. Felt (VI) ot Angren, Fergono and Tashkent, Uzbekistan and ot Osh, Kyrgyzstan. Also felt (VI) at Almo-Ato, Kazakhstan; (V) at Somarkond and Yangiyul, Uzbekistan and Khodzhent, Tajikistan; (IV) at Dushanbe. Kulyab, Nurek ond Pendzhikent, Tajikistan and Naryn, Kyrgyzstan; (III) at Cholpon-Ato and Przhevalsk, Kyrgyzstan. Elevation changes of up to 4 meters observed in the Susomyr Valley. Liquefaction occurred in the epicentral area.

AUG 19 03 20 27.9 42.104 N 73.237 E 19 D 6.1 6.6 1.1 377 KYRGYZSTAN

AUG 28 00 50 50.4 29.887 N 66.740 E 9 D 5.5 5.5 1.3 299 PAKISTAN. Mo-2.6*10**17 Nm (HRV). At least four peoplekilled, several injured ond many houses destroyed in the Kolot area. Felt at Khuzdar, Manguchar, Mostung ond Ouetto.

AUG 28 18 18 46.4 6.965 S 13.562 W 16 G 6.3 7.6 1.6 578 NORTH OF ASCENSION ISLAND. Ms 7.1 (BRK). Mo-2.3»10.* 19Nm (GS). Mo-2.0*10**19 Nm (HRV). Mo-5.0*10»»19 Nm (PPT).

PAGE 29

DATE ORIGIN TIME GEOGRAPHIC DEPTH MAGNITUDES SD NO. REGION, CONTRIBUTED MAGNITUDES AND COMMENTS UTC COORDINATES GS STA

HP MN SEC LAT LONG MB Msz USED

SEP 02 00 16 01.6 11.742 N 87.340 W 45 G 5.3 7.2 1.3 212 NEAR COAST OF NICARAGUA. Ms 7.4 (BRK). Mo-3.4»10»»20Nm (HRV). Mo-3.2»10»«20 Nm (PPT). At leost 116 people

killed, more than 68 missing and over 13,500 left homeless in Nicaragua. At least 1,300 houses and 185 fishing boats were destroyed along the west coast of Nicaragua. Total damage in Nicaragua is estimated at between 20 and 30 million U S. dollars. Some damage was also reported in Costa Rica. Most of the casualties and damage were caused by a tsunami affecting the west coasts of Nicaragua and Costa Rica, reaching heights of up to 8 meters. The tsunami ran inland 1,000 meters at Masachapa, Nicaragua. Maximum wove heights (in cm. peak-to-trough) ot selected tide stations were as follows: 111 at Baltra Island, 83 at Easter Island, 28 at Socorro Island, 18 at La Libertad, Ecuador, 10 at Valparaiso, Chile and 10 at Hilo, Hawaii. Felt in Chinandega and Leon Deportments, Nicaragua. Also felt at Crucero, Managua and San Marcos, Nicaragua and ot San Jose, Costo Rica.

SEP 08 00 38 15.4 29.134 N 52.187 E 18 D 5.2 4.7 1.0 276 SOUTHERN IRAN. One person killed and 11 injured inthe Firuzabod area. Also 200 houses and 3 bridges were destroyed and landslides blocked roads in the epicentral area. Damage reported at Bonu, Darenjan, Giah Zor and Meygoli. Felt ot Kozerun and Shiraz.

SEP 11 03 57 26.5 6.087 S 26.651 E 11 G 6.7 6.5 1.0 642 ZAIRE. Ms 7.0 (BRK). Mo-4.9*10»»18 Nm (GS).Ma-3.7»10«*18 Nm (HRV). Mo-3.2*10*» 1 8 Nm (PPT). Eight people killed, 37 injured and several buildings destroyed at Kabalo. Felt at Bujumbura, Burundi.

SEP 26 22 15 57.5 1.289 N 129.118 E 28 D 5.9 6.5 1.2 270 HALMAHERA, INDONESIA. Mo-1.2«10««19 Nm (GS).Mo-8.2*10»*18 Nm (HRV). Mo-3.2»10« 19 Nm (PPT).

SEP 30 05 34 00.3 51.281 N 178.037 W 33 N 6.1 6.6 1.0 592 ANDREANOF ISLANDS, ALEUTIAN IS. ML 5.8 (PMR). Ms 6.8(BRK). Ma-9.5*10»»18 Nm (GS). Mo-9.5«10»*18 Nm (HRV). Mo-2.0»10»»19 Nm (PPT). Felt (V) on Adak ond (II) on Amch i t ka.

OCT 11 19 24 26.2 19.247 S 168.948 E 129 G 6.4 6.8 1.1 605 VANUATU ISLANDS. Ms 7.2 (BRK). Mo-5.3*10»»19Nm (GS). Mo-1.5«10»«20 Nm (HRV). Mo-4.0*10«»20 Nm (PPT). Felt (VIII) on Erromango and Tanna; (VI ) at Por t Vi Io.

OCT 12 13 09 55.5 29.778 N 31.144 E 22 G 5.9 5.3 1.2 527 EGYPT. MD 5.3 (HLW). Mo-5.0*10* 17 Nm (GS).Mo-5.6*10»»17 Nm (HRV). At leost 552 people killed, mare than 9,929 injured and 8,300 buildings damaged or destroyed in the Cairo area. Preliminary estimates of damage obout 300 million U.S. dollars. Felt in much af Egypt from Alexandria to Aswan and in Israel fram Elat to Tel Aviv and Jerusalem

OCT 15 22 37 05.9 14.537 S 166.711 E 25 D 6.2 6.7 1.4 524 VANUATU ISLANDS Ms 7.1 (BRK) Mo-1.6»10»«19 Nm(GS). Mo-2.0»10»»19 Nm (HRV) Mo-3.2»10» 19 Nm (PPT).

OCT 17 02 51 50.9 19.226 S 169.553 E 12 G 5.8 6.3 1.3 334 VANUATU ISLANDS. Ms 7 0 (BRK). Mo-2.4.10** 18 Nm(GS). Mo-5 8»10»«18 Nm (HRV). Mo-7.9»10» 18 Nm (PPT).

OCT 17 08 32 40.5 6 845 N 76 806 W 14 G 6.2 6.7 1.0 494 NORTHERN COLOMBIA. Ms 7.0 (BRK). Mo-7.7 10* 18 Nm(GS). Mo-1.1*10»«19 Nm (HRV). Mo-1.6»10 «19 Nm (PPT). About 20 people injured ond 90 percent of the buildings destroyed ot Murindo. Felt throughout northwestern Colambio from CaIi and Bogota to Cesar Depar tment.

OCT 18 15 11 59.1 7 075 N 76 862 W 10 G 6.6 7.3 1.3 544 NORTHERN COLOMBIA. Ms 7.4 (BRK). Mo-8.4«10* 19 Nm(GS). Mo-5.7«10»«19 Nm (HRV). Mo-1.6»10««20 Nm (PPT).

One person killed, 50 injured and damage in the Murindo Apartado-MedelI in area. At least 10 people killed, 65 injured and 1,500 homeless by the explosion of a mud volcano in the San Pedro de Uraba area. Slight damage at Bogota Felt in much of northwestern Colombia and as far south as CaI i. Felt strongly in Darien Province, Panama. Also felt (IV) on the Azuero Peninsula and ot Panama City, Panama. Felt at Caracas and Valencia, Venezuela. Also felt on Arubo Landslides occured in the epicentral oreo. Liquefaction was observed in the Murindo area and os far north os Apartado A smoII island emerged from the Caribbeon Sea off San Juan de Uraba.

OCT 22 09 04 23.4 30.227 S 177.205 W 26 G 6.0 6.6 1.2 268 KERMADEC ISLANDS, NEW ZEALAND. Ms 7.2 (BRK).Mo-6.2«10»*18 Nm (GS). Mo-7.8»10» 18 Nm (HRV). Mo-1.3»10»*19 Nm (PPT). Felt (IV) on RaouI Island.

OCT 22 17 39 00.6 29.755 N 31.535 E 10 G 4.5 0.8 31 EGYPT. MD 4.2 (HLW), 4.1 (RYD). Four people killed andat least 50 injured in the Cairo area.

OCT 22 23 08 27.1 30.125 S 177.000 W 16 G 5.7 6.4 1.1 254 KERMADEC ISLANDS, NEW ZEALAND. Ms 6.5 (BRK).Mo-6.5»10»*18 Nm (GS). Mo-5.0«10»* 18 Nm (HRV). Mo-7.9*10»*18 Nm (PPT).

OCT 23 09 11 09.0 31.355 N 4.318 W 29 D 5.3 5.2 1.1 316 MOROCCO- MD 5.2 (RBA). mbLg 5.0 (MOD). Mo-2.4«10»* 17 Nm(HRV). At least two people killed at Rissoni. Felt (VI) at Rissoni ond (V) ot Erfoud. Felt throughout much of Morocco from Fes to Morrakech.

OCT 23 13 04 40.7 5.352 S 152.616 E 31 D 5.8 6.5 1.0 287 NEW BRITAIN REGION, P.N.G. Ms 7.0 (BRK). Mo-5.1 10» 18Nm (HRV). Mo-1.6»10»»19 Nm (PPT) Felt (IV) at Rabaul.

PAGE 36

DATE OR IGIN TI MEUTC

HR MN SEC

GEOGRAPHICCOORDINATES

LAT LONG

DEPTH MAGNITUDES SDGS

MB MSZ

NO.STA

USED

REGION. CONTRIBUTED MAGNITUDES AND COMMENTS

OCT 23 23 19 45 2 42.589 N 45.164 E 16 G 6.1 6.5 1.0 591 EASTERN CAUCASUS. Ms 6.8 (BRK). Mo-4.1 * 16**18 Nm(GS). Mo-4.9*10**18 Nm (HRV). Mo-7.3*10**18 Nm

(OBN). At leost one person killed. 10 injured ond several houses damaged (VIM) in the Borisokho-Kozbegi area, Georgia Landslides reported in the epicentrol area. Felt (VI) at Tskhinvoli ond Bokuriani; (V) at Tbilisi ond Kutaisi, Georgia. Felt (V) at Groznyy ond Vladikavkaz, (IV) ot Sochi ond Pyatigorsk, Russia. Also felt (IV) at Akstofa ond Kazakh; (III) ot Tauz ond Tsey, Azerbaijan.

OCT 24 08 23 01.1 29.536 S 177.279 W 19 G 5.8 6.2

NOV 02

NOV 21

15 13 25.8 46.727 N 8 328 E 0 G 4.2

NOV 08 03 43 20.4 15.727 S 179.703 W 10 5.7 6.5

22 39 32.9 56.665 S 26.405 W 20 G 5.9 6.6

NOV 28 03 13 33.3 31.330 S 71.992 W 12 G 5.8 6.5 1.0 337

DEC 09 20 29 47.1 40.058 N 45.312 E 16 D 4.84.5

1.2 281 KERMADEC ISLANDS, NEW ZEALAND. Ms 6.6 (BRK).Mo-5.4*10**18 Nm (GS). Ma-8.7*10** 18 Nm (HRV). Mo-1.3*10»*19 Nm (PPT). Felt (IV) on Raaul Island.

1.2 106 SWITZERLAND. ML 4.0 (GRF), 3.8 (LOG). 3.5 (STR), 3.4 (ROM). MD 3.7 (VIE), 3.4 (LJU). Six people killed by the occidental explosion of an ammunitions cavern.

1.3 340 FIJI ISLANDS REGION. Ms 6.6 (BRK). Mo-8.3*10»* 18 Nm (GS). Mo-1.2*10**19 Nm (HRV). Felt in eastern Vanua Levu and on Taveuni.

1.1 235 SOUTH SANDWICH ISLANDS REGION. Mo-6.6*10** 18 Nm (GS). Ma-7.9*10»»18 Nm (HRV).

NEAR COAST OF CENTRAL CHILE. Mo-6.5»10** 18 Nm (GS). Mo-5.6*10»*18 Nm (HRV). Felt (V) at La Liguo. Las Andes, Son FeIipe, Lo Serena, Lloilloy, Valparaiso ond San Antonio; (III) ot Santiago ond Roncoguo; (II) ot Copiapo. Felt (IV) ot Mendozo, Argentina.

1.2 110 EASTERN CAUCASUS. Some houses destroyed (VII) inthe Torotumb area; also damage ot Kormroshen, Armenia. A landsl ide blocked 500 meters of highway in the epicentrol area, Armenia. Felt (V) at Kelbodzhar, Yerevan ond Abovyon, Armenia. Also felt in northwestern I ran .

DEC 12 05 29 26.3 8.480 S 121.896 E 28 G 6.5 7.5 1.4 457 FLORES REGION, INDONESIA. Ms 7.5 (BRK). Mo-1.4*10»»20Nm (GS). Mo-5.1»10..20 Nm (HRV) Mo-8.0*10»*20 Nm

(PPT). At leost 2,500 people killed or missing in the Flores region, including 1,490 ot Moumere ond 700 on Bobi . More than 500 people were injured and 90,000 were left homeless. Nineteen people killed ond 130 houses destroyed on Kolootoo. Severe damage, with approximately 90 percent of the buildings destroyed ot Moumere by the earthquake ond tsunami; 50 to 80 percent of the structures on Flores were damaged or destroyed. Damage also occurred an Sumbo ond Alor. The tsunami on Flores ran inland os much as 300 meters with wove heights of 25 meters Landslides ond grou crocks were reported ot several locations on the island Felt (V) ot Lorontuko, Flores; (IV) ot Waingapu, Sumbo and Ujung Pondang, Sulawesi; (II) at Kupong, Timor.

DEC 18 11 21 44.7 26.357 N 100.872 E 30 * 5.0 4.7

DEC 20 20 52 47.2 6.582 S 130.393 E 78 G 6.6 7.1

1 . 4 83 YUNNAN, CHINA. One person killed, 45 injured and several houses damaged in Yongsheng County.

1.2 602 BANDA SEA. Ms 7.0 (BRK). Mo-5.0*10*»19 Nm (GS). Mo-8.5*10»»19 Nm (HRV). Mo-1.3»10**20 Nm (PPT). Felt in ports of northern Australia.

Other Notable North American Earthquakes

JUN 29 10 14 22.2 36.705 N 116.293 W

JUL 05 21 18 27.1& 34.583 N 116.319 W

5.6 5.4

5.3 5.2

0.9 262

218

CALIFORNIA-NEVADA BORDER REGION. Mo-4 . 8* 1 0» * 1 7 Nm (HRV). Ma-2 . 5» 10»» 17 Nm (PPT). Department of Energy buildings ot the Nevada Test Site sustained considerable domoge . Minor damage occurred ot Beatty, Amorgosa Vol ley ond Mercury, Nevada. Felt at Los Vegos, Nevada.

SOUTHERN CALIFORNIA. <PAS-P> . ML 5.4 (PAS). Slight domoge (VI) ot Big Bear City. Felt (V) ot Covino, Joshua Tree, La Ouinto, Morango Volley, Newberry Springs, Palm Springs, Placentia, Son Clemente, Tehachapi ond Temeculo. Felt in Imperial, Kern, Los Angeles, Orange, Riverside, San Bernordino and Son Diega Counties. Also felt in parts of western Arizona.

SEP 02 10 26 20.9& 37.090 N 113.472 W 15 5.7 5.6 342 UTAH. <SLC-P>. ML 5.9 (SLC). Mo-3 . 3» 1 0* * 1 7 Nm (HRv).Some domoge (VI) at Cedar City, Hurricane, Konob,

New Harmony, Santa Clara, Springdale, St. George, Toquerville, Virgin and Washington. The earthquake triggered a large landslide which destroyed three houses ot Springdale. Felt (V) at Glendale, Gunlock, Hatch, Konor rov i I I e , La Verkin, Orderville, Panguitch ond Rockville; (IV) at Alton, Beaver, Beryl, Brian Head, Sryce, Circleville, Enterprise, Escalante, Junction, Milford, Minersville, Modeno, Mt. Cormel, Newcastle, Porowon, Richfield ond Tropic. Felt (V) at Fredonio ond Grand Canyon, Arizona. Felt (IV) ot Bunkerville, Caliente, Logondole, Ponoco ond Pioche, Nevada. Also felt (IV) at Littlefield, Arizona. Felt throughout much of southwestern Utah, northwestern Arizona ond southeastern Nevada as for north as Richfield, Utah ond os for south os Flagstaff, Arizona. Felt west os for os Caliente ond Pioche, Nevada ond southwest to the Los Vegos, Nevada area.

PAGE 31

DATE OR IGIN TIMEUTC

HR MM SEC


LAT LONG

DEPTH MAGNITUDES SD NO.GS STA

MB Msz USED


NOV 27 16 00 57.44 34.340 N 116.900 W 5.148 151 SOUTHERN CALIFORNIA. <PAS-P>. ML 5.3 (PAS), 5.6 (BRK).Mo-4.3*10**17 Nm (BRK). Slight damage (VI) at Big Bear

City. Felt (V) at Apple Valley, Blue Jay, Fawnskin, Fontana. Gardena, Hesperia, Indio, Lake Elsinore, Lo Ouinta, Loma Linda, Oro Grande, Pioneertown, Son Bernordino, South Pasodeno and Yucaipa. Felt in Kern, Los Angeles, Orange Riverside, San Bernardino, San Diego and Ventura Counties. Felt os far os NeI I is Air Force Base, Nevada.

Compiled by Waverly J. Person

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PAGE 35

EXPLANATION OF ABBREVIATIONS AND SYMBOLS APPEARING IN THIS PUBLICATION

Abbreviotions in Heeding

MB - Body wove mognitudes. Msz - Verticol surfoce wove magnitudes. UTC - Coordinoted Universol Time. HR MN SEC - Hour, minute, second.SD - Stondord Deviotion from the orithmetic meon of residuols

Sto. - Number of stotions reporting P or PKP phoses used in computotion.KEY - (Printed verticolly). A symbol in this column indicotes odditionol source porometers ond/or o focol sphere

ore published for this event in seporote sections which follow the list of hypocenters. The symbols ore: o - Additional source porometers f - Additional source porometers plus focol sphere

Symbols ond Abbreviations Used in Comments

AEIC Alaska Earthquake Information Center (U.S. Geological Survey and University of Alaska), College.APT University of Connecticut.BOS British Geological Survey, Edinburgh, United Kingdom.BLA Virginia Polytechnic Institute and State University, Blacksburg.BOU University of Colorado, Boulder.BRK University of California, Berkeley.BUT Montana Bureau of Mines and Geology, Butte.DOE U.S. Deportment of Energy (formerly AEC and ERDA) .

EXPLO Some or all parameters of explosion (controlled or occidental) supplied by any group or individual otherDOE or its predecessor organizations.

GLD U.S. Geological Survey, Golden, Colorado (other than NEIS).GM U.S. Geological Survey, Menlo Park, California.GS U.S. Geological Survey, National Earthquake Information Service (NEIS), Golden, Colorado.

HDC Observotorio VuIcanoIogica y Sismologico de Costo Rica, Universidod Nacional, Heredia, Costa Rica.HRV Harvard University, Cambridge, Massachusetts.HVO Hawaiian Volcano Observatory.JMA Japan Meteorological Agency, Tokyo (also used to indicate 7-point Japanese Intensity Scale).LAK Konsos Geological Survey, University of Kansas, Lawrence.LDG Loborotoire de Detection et de Geophysique, Bruyeres-Ie-ChoteI, France.

MACRO Hypocenter based upon mocroseismic information.MD Duration magnitude (shown as DUR prior to 1986).

MDD Institute Geogrofico Nocional, Madrid, Spain.MG Contributed local or regional magnitude of unspecified type (see "Contributed Magnitudes" below).MW Moment Magnitude.

OTT Geological Survey of Canada, Earth Physics Branch, Ottawa.PAL Columbia University, Lomont-Doherty Geological Observatory, Palisades, New York.PAR Institute de Physique du Globe, Universite Pierre et Marie Curie, Paris, France.PAS Colifornio Institute of Technology, Posodeno.P&C Pacific Geoscience Centre, Sidney, British Columbia, CanadaPMR Alaska Tsunami Warning Center, Palmer, Alaska.PPT Loborotoire de Geophysique, Papeete. French Polynesia.REN University of Nevada, Reno.RF Rossi-Forel Intensity Scale.

SEA University of Washington, Seattle.SLC University of Utoh, Salt Lake City.SLM St. Louis University, Missouri.

SPEC An NEIS solution based on use of dense local networks,applied in calculating the hypocenter porometers.

TEIC Center for Earthquake Research ond Information, Memphis, T«TUL Oklahoma Geological Survey, Leonard.UVC Universidod del Voile, Coli, Colombia.WES Weston Observatory, Massachusetts.

t hon

local crustol model, or other methods not routinely

to the Modified Mercolli Scale or anyRoman Used to indicate intensity (when not followed by RF or JMA they refer Numerals 12-point intensity scale closely related to it).

° ' " Geographic degrees, minutes, seconds.

-P Supplied hypocenter is a preliminary computotion.

Any odditionol 3 to 5 letter codes enclosed in parentheses or ongle brockets refer to individual station codes. These codes may be found in Geological Survey Open File Report 85-714, SfiiSODfifllflCb SlslifiQ CfldfiS sad. CflfildiDfllfiJS (1985). Addenda to OF 85 714 are printed ot the end of the Earthquake Doto Report for this month.

Symbols Following Depth

N Indicotes the depth was restrained ot 33 km for earthquakes whose character on seismogroms indicotes o shallow focus but whose depth is not satisfactorily determined by the data.

D Indicotes the depth wos restrained by the computer program based on 2 or more compatible pP phoses ond/or uniden tified secondary arrivals used as pP.

G Indicotes the depth wos restrained by o geophysicist.

* Indicotes o less we I I-co^stroined free depth. The 90% marginal confidence interval an depth is greater thon 8.5 km ond less thon or equal to 16.0 km.

? Indicotes o poor Iy-constroined free depth. The 90% marginal confidence interval on depth is greater than 16.0 km.

The lack of ony symbol indicotes thot the 96% marginal confidence interval on depth is less thon or equal to 8.5 km, or thot o contributed hypocenter was computed with o free depth, regardless of the size of the confidence interval.

PAGE 36

Symbols Following Origin Tim*

& Indicotes that parameters of the hypacenter were supplied or determined by o computotionoI procedure not normally used by the Notional Earthquake Information Service (NEIS). The source ar nature of the determination is indicated by a 2 to 5 letter code enclosed by ongle brockets ond appearing in the first line of comments. A "-P" appended to the code indicates thot the computation is preliminary. These codes ore included with the list of abbreviations above.

% Indicates o single network solution. A non furnished hypacenter has been computed using data reported by a single network of stations for which the dote ond/or origin time cannot be confirmed from seismograms available to a NEIS onolyst. The geometric mean of the semi-mojor and semi-minor axes of the horizontal 96% confidence ellipse is less than or equal to 16.6 km.

* Indicates a less reliable solution. In general, the geometric mean of the semi major ond semi minor axes of the horizontal 90% confidence ellipse is greater then 8.5 km and less then or equal to 16.0 km.

? Indicates a poor solution, published far completeness of the catalog. In general, the geometric mean of the semi- major and semi-minor oxes af the horizontal 96% confidence ellipse is greater than 16.6 km. This includes o poor solution computed using data reported by a single network.

The lock of ony symbol indicates that the geometric meon of the semi mojor and semi minor axes of the horizontal 96% confidence ellipse is less than or equal to 8.5 km.

APPROXIMATE CORRELATION OF GRADES FOR INTENSITY SCALES REPORTED IN PRELIMINARY DETERMINATION OF EPICENTERS

U.S.A. Modified Mercalli (M.M.), 1931 I

Japanese (JMA). 1950 0

Ross i-ForeI (RF), 1873 I

European (MercaI I i-Cancani-Sieberg), 1917 I

I I I VI I I IX

I V-V V-VI VI

I V-V V-VI VI- VIII- VIII+ IX+ X VII - I X

VIII IX

XI XII

VII VII

XI XII

TRAVEL-TIME TABLES

In general, all hypocenters have been computed based on the 1946 Jeffreys-BuII en P and 1968 Bolt PKP travel-time tobies. Some other eorth model or computotionoI procedure moy have been used for those hypocenters which have been indicated by on ompersond (&) following the origin time.

MACROSEISMIC INFORMATION

Mocroseismic information is compiled from various sources, including newspaper articles, Foreign Broadcast Informotion Service messages, U.S. Geological Survey Earthquake Reports and seismoIogicaI station reports. Mocroseismic information for southwestern France is contributed by Dr. Pierre Stahl, Pou. Sources of information for particular events can be supplied on request from: U.S. Geological Survey, Notional Earthquake Information Center, Stop 967, Box 25046, Denver Federal Center, Denver, CO B0225, U.S.A.

GEOGRAPHIC REGIONS

The regions shown in the comments column ore from the seismic and geographical regiana I ization of Flinn, Engdahl ond Hill (1974), with occosionol name changes which hove been given in various issues of the Monthly Listing. The boundaries of these regions ore defined at one degree intervals ond differ slightly from irregular politico! boundaries.

DEPTHS FROM BROADBAND DISPLACEMENT SEISMOGRAMS

The NEIS routinely interprets broadband data from the GDSN ond RSTN using methods described by Harvey and Choy (19B2) and by Choy ond Boatwright (1981) for events with MB 2 5.8. The natation thot o depth is obtained from broadband seismograms indicates thot a depth was obtained by inversion of differential travel times of depth phoses that ore cleorly identifi able at several stations using broadband records that ore flat ta displacement between approximately 0.01 ond 5.0 Hz.

Choy. G. L. ond Engdahl, E R., 1987, Analysis of broadband seismograms from selected IASPEI events: Physics of the Eorth ond Planetary Interiors, v. 47, p. 80-92.

Horvey, D. and Choy, G. L., 1982. Broadband deconvoIution of GDSN data: Geophysical Journal of the Royal Astronomical Society, v. 69. p. 659-668.

FAULT PLANE SOLUTIONS

A fault plane solution is determined when possible for any earthquake having a magnitude ;> 5.8, using first motions from P, PKP, pp and pPKP waves. A description af the solution is reported in the Additional Focal Parameters section of the Preliminary Determination of Epicenters Monthly Listing. First motion data used to compute the solution are available upon request from the National Earthquake Information Center ot the address given above.

FOCAL MECHANISM MAPS

Best double couple focal mechanisms are plotted os lower-hemisphere, equol-oreo projections for earthquakes having a seismic moment greater than 1 * 10 ** 17 Nm. The shaded quadrants represent compressionoI first motions. For each event, the mechanism shown is selected from either the Foult Plone Solution. Moment Tensor Solution or Centroid, Moment Tensor Solution. All these solutions are given in the Additional Source Porometers section of the Monthly Listing.

PAGE 37

NEIS MAGNITUDES

magnitudes are NEIS magnitudes unless otherwise indicated Beginning with August, 19B3, overage magnitudes ore Duted by a 25% trimmed mean as described by Rosenberger, J. L. and Gosko, M., 19B3, "Comparing location estimators: timed means, medians, and trimean" J.Q Understanding Robust ond Exploratory Data Analysis, ed. Hoag I i n , D.C., teller, F., and Tukey, J. W., John Wiley, New York.

» These moment magnitudes ore computed from the scalar moment of the moment tensor using the Konamori (1977) fa rmuIo:

Mw - (2/3) log Mo - 18.7

where Mo is the scalar moment of the best double couple in dyne cm. Beginning with January, 1993, a moment magnitude is computed routinely from the USGS moment tensor ond Harvard centroid moment tensor solutions.

s These surface wove magnitudes ore computed from the IASPEI formula:

Ms - Log (A/T) 4 1.66 Log D + 3.3

where:

A is the maximum ground amplitude in micrometers (microns) of the vertical component of the surface wave within the period range IB <, T < 22.

T is the period in seconds.

D is the distance in geocentric degrees (station to epicenter) ond 20° < D < 166°.

No depth corrections ore applied, ond Ms magnitudes ore not generally computed for depths greater than 50 km. The Ms value published is the overage of the individual station mogn itudes from reported T and A data.

If the uncertainty of the computed depth is considered great enough that the depth could be less than 50 km, on MS voIue may still be published, compu ted by the IASPEI formula ond DSi corrected for depth.

In general, the Ms magnitude is more reliable thon the MB magnitude as o means of yielding the relative "size" of o shoI Iow-focus earthquake.

B These compressionoI body wove (P-wove) magnitudes ore computed according to the formula:

MB - Log (A/T) + 0(0,h)

defined by Gutenberg ond Richter (1956) except that T, the period in seconds, is restricted to 0.1 < T < 3.0 ond A, the ground amplitude in micrometers, is not necessarily the maximum in the P group. 0 is o function of of distance (D) ond depth (h) where D £ 5°.

g These Lg body wove magnitudes ore computed according to the formula:

mbLg - 3.75 + 0.90 Log D + Log (A/T) for 0.5° < D < 4°

mbLg - 3.30 + 1.66 Log D + Log (A/T) for 4° < D < 30°

as proposed by Nuttli (1973) where A is the ground amplitude in micrometers and T is the period in seconds calculated from the vertical component 1-second Lg waves. D is the distance in geocentric degrees.

L These local magnitudes ore computed according to the formula:

ML - Log A - Log Ao

defined by Richter (1935) where A is the maximum trace amplitude in micrometers recorded on o standard short- period torsion seismometer ond Log Ao is o standard value as o function of distance where distance < 606 km.

CONTRIBUTED MAGNITUDES

nitudes appearing in the commen ts which hove been contributed by organizations operating a network of stations may e been calculated from any one station in the network or may be an overage magnitude from o number of stations fromnetwork

inning with January, 1986, o contributed magnitude of unspecified type may be quoted (using the designator MG) for nts which hove no other magnitudes given or computed. These MG magnitudes either hove been reported by the contri- or without listing the type (such as "Mag 3.5") or hove been computed using procedures which ore not defined by the nitude types routinely reported in this bulletin. Direct inquiries should be mode to the contributor (shown in entheses after the magnitude) concerning the specific details of the computational procedures used to determine these ues .

REFERENCES

enberg, B., ond Richter, C. F., 1956, Magnitude ond energy of earthquakes: Annoli di Geofisica, v. 9, no. 1, p. 1-15.

omori, H., 1977, The energy release in great earthquakes: Journal of Geophysical Research, v. 82, pp. 2981 2987.

tli, 0. W., 1973, Seismic wove attenuation ond magnitude relations for eastern North America: Journal of Geophysical Research, v. 7B, no. 5, p. 876-885.

hter, C. F., 1935, An instrumental earthquake scale: Bulletin of the SeismaIogicaI Society of America, v. 25, p. 1 32.

PAGE 38

WAVEFORM PLOTS

Eoch month selected events with MB 2 5.8 will be shown. For eoch event, up to sixteen body phose waveforms will be selected for display around the periphery of on equal area plot of the lower hemisphere of the focol sphere. Eoch wave form will be connected by o dotted line to o symbol marking the corresponding azimuth ond take-off angle on the focol sphere. For reference, the nodal planes, compression axis (P), ond tension axis (T) will also be plotted when solutions ore available. The dom inont double couple of the USGS momen t tensor will be shown in solid lines with the axes desig- noted by P and T respectively. The NEIS first motions fault plane solution will be shown in dashed lines with the axes designated by P' ond T' respectively. If both solutions ore available, the primed axes may be suppressed unless they ore sufficiently different from the unprimed axes. Eoch event will be titled with its origin date-time ond FIinn- Engdohl region name to facilitate cross-referencing with the Monthly Listing text.

Eoch waveform will be identified by station code, doto type, phose name ond scale factor. The doto type will be identi fied by o code conforming with the chonneI-noming conventions adopted for the Standard for the Exchange of Earthquake Doto (SEED) by the Federation of Digital Seismograph Networks. Long period channels, designated by LH or LL (where the second letter denotes o high-gain channel, H, or o low gain channel, L) will display approximately one-half minute of noise followed by three minutes of signal. Time and amplitude ore referenced to o set of axes labeled L ond shown at the bottom of eoch plot. The scale factor is on integer from which absolute amplitude, in micrometers of ground dis placement at the dominant period of the pass-bond (25 sec), may be determined. Absolute amplitude may be recovered by measuring the amplitude of the seismogrom relative to the amplitude axis ond dividing it by the scale factor. Note that long period channels with pass-bonds which extend well into the microseism noise peak will be processed for presentation using o four pole Butterworth low-pass filter with o corner at 25 sec. period. Other data types ore indicated by BH or BL (brood-bond), MH or ML (mid-bond), SH or SL (short period), or EH or EL (extremely short period). As these types of doto hove different pass-bonds than long period doto, different time ond amplitude scales will generally be needed. These scales will be labeled M ond B for brood-bond ond mid-bond ond S ond E for short ond extremely short period ond will be shown at the bottom of eoch plot as needed. As with the long period waveforms, the absolute amplitudes of the other doto types may be recovered from the amplitude scole ond the scale factor. For brood bond ond mid-band dato, the absolute amplitude is referenced to 10 seconds. For short ond extremely short period data, the absolute amplitude is referenced to 1 second. Brood-bond ond mid-bond doto will be processed to be proportional to displacement from 0.01 Hz to at least 2 Hz. In some coses, BH channels will be synthesized by combining LH ond SH doto. In addition, eoch com ponent will be identified by o direction indicator (ie. N, E, Z, R ond T for north-south, cost-west, vertical, radial, ond transverse, respectively). Note that the dominant period approximation will not be valid for brood-bond, mid-bond or some long period data. However, the scaling will still be correct.

Waveforms will primarily be selected to display variations in the P waveform as o function of azimuth. If space per mits, some PKP waveforms may be shown as well. To this end, waveforms which ore clipped, non-lineor, or very noisy will be rejected. Further, only one of several stations at similar distance ond azimuth may be used if all show similar waveforms. Note that the importance of o record in focol parameter derivation will not be considered. Thus, mony seismog rams will be shown which hove not been used in the USGS moment tensor solution. Conversely, records which hove been important in constraining one or both solutions moy hove been passed over for lock of space The data ore derived from globally distributed digital stations collected by the USGS Albuquerque SeismoIogicaI Laboratory from o number of cooperating networks. For details on doto sources, see the Notional Earthquake Information Center Newsletter.

P. BuIond ond M. 89225 USA

Zirbes, U.S. Geological Survey, Moil Stop 967, Box 25846, Denver Federal Center, Denver, CD

The energy radiated by on ear method described by Bootwri correction for source direct estimates of radiated energy of P, pP ond sP (for shollc* two months of the occurrence they ore flat to velocity f corrected with the frequency first-motion solution (F), th

USGS RADIATED ENERGY

thquoke is estimated from the energy spectral density of the broadband P waves, using the ght ond Choy (1986), where the energy flux in the P woves is integrated directly. No ivity or frequency-dependent interference of the depth phases is incorporated into theseDoto used ore either direct P waves (far deep earthquakes) or the P wove group consisting

earthquakes) from GDSN ond other stations that contribute digital dato to the NEIC withinof on event. The dato ore processed using the method of Harvey ond Choy (1982) so thot

rom low frequencies (generally 8.01 Hz) to ot least 2.0 Hz. The effect of attenuation is -dependent t* of Choy ond Cormier (1986). The focol mechanism used is either the P-wove e USGS moment tensor solution (M) or the Harvard centroid solution (C).

istimates of the energy radiated by shallow earthquakes: Journal ofBootwright, J. ond Choy, G. L., 1986, Teleseisr Geophysical Research, v. 91, p. 2695-2112.

Choy, G. L. and Cormier, V. F , 1986, Direct measurement of the montle attenuation operator from broadband P ond S waveforms: Journal of Geophysical Research, v. 91, p. 7326-7342.

Horvey, D. ond Choy, G L , 1982, Broadband deconvo I u t i on of GDSN doto: Geophysical Journal of the Royal Astronomical Society, v. 69, p. 659-668.

EXPLANATION OF THE ENTRIES "MOMENT TENSOR SOLUTION" (USGS)

These solutions hove been determined using the body-wove moment tensor inversion method described by Sipkin (1982).

1. NUMBER OF STATIONS: Number of GDSN stations with distances between approximately 30 ond 95 degrees found to have suitable P waveforms. Only long-period vertical components ore used.

2. DEPTH- The source depth which gives the smallest normalized mean squo red er ror . This is the only hypocentrol parameter determined since the inversion procedure is insensitive to small errors in both epicenter ond origin t i me .

3. SCALE ) )

4. PRINCIPAL AXES ) See "Centroid, Moment Tensor (HRV)"

5. BEST DOUBLE COUPLE )

S. A. Sipkin, U.S. Geological Survey, Moil Stop 967, Box 25046, Denver Federal Center, Denver, CO 89225 USA

Sipkin, S. A.. 1982, Estimation of earthquake source parameters by the inversion of woveform dato: synthetic seismogroms: Physics of the Eorth ond Planetary Interiors, v. 36, no. 2-3, p. 242-259.

PAGE 39

EXPLANATION OF THE ENTRIES "GEOSCOPE MOMENT TENSOR (PAR)"

These solutions hove been obtoined from very long period Roy Ieigh wove doto in the period ronge 180-310 seconds (R1 ond R2 troins) using o two step moment tensor inversion method as described in Romonowicz ond Guillemont (1984) ond Romono- wicz and Monfret (1986). Porometers solved for ore centroid time, seismic moment, depth ond moment tensor. Origin time ond epicentral coordinates ore kept fixed as given in the USGS Quick Epicenter Determinations (QED) or PDE. For shallow eorthquokes the precision on depth is in general no greater thon +/- 10 km.

The data used presently came from GEOSCOPE teIetransmitted stations (usuol|y 8-10 stations) ond are available within a week after the event. The solutions ore computed by the Institute de Physique du Globe, Universite Pierre et Marie Cur i e , Par i s, France.

Romanowicz, B. ond Guillemont, P., 1984, An experiment in the retrieval of depth ond source mechanism of large earth quakes using very long-period Royleigh wove data: Bulletin of the SeismoIogicaI Society of America, v. 74, no. 2, p. 417-437.

Romanowicz, B. ond Monfret, T., 1986, Source process times ond depths of large eorthquokes by moment tensor inversion of montle wove doto and the effect of lateral heterogeneity: Annales de Geophysique, v. B4, no. 3, p. 271-282.

EXPLANATION OF THE ENTRIES "CENTROID, MOMENT TENSOR (HRV)"

These solutions have been determined using the long period body and montle wave moment tensor inversion method described by Dziewonski, et.ol (1981) considering corrections due to on asphericol earth structure of model SH8/U4L8 (Dziewonski and Woodward, 1991).

1. DATA USED; currently GDSN, GSN ond I DA/1RIS data are used. The numbers following the entries L.P.B. ond M.W. indicate the number of stations (S) and total number of records (C) for the long-period body waves ond mantle waves, respectively. Montle waves ore routinely used in inversion for sources with moments greater thon 5*10**18 Newton-me t e r s (Nm).

2. CENTROID LOCATION; hypocentral parameters obtoined by adding perturbations resulting from inversion to the para meters reported in the PDE; standard errors follow the individual entries. If a given parameter is not perturbed in inversion, this is indicated by the letters FIX. If the depth is fixed to be consistent with waveform matching of reconstructed brood-bond body waves (Ekstrom, 1989), this is indicated by the letters BDY. The default depth for shallow eorthquokes is increased to 15 km. in order to improve the stability of solutions; it was 10 km. in 1981-1985.

3. PRINCIPAL AXES; rotation of the moment tensor, constrained to hove zero trace, into the principal ones system. Most of the solutions ore predominantly of the double couple type: the largest positive eigenvalue corresponds to the tension oxis (T); the usually smaII, intermediote eigenvalue is ossocioted with the null axis (N); the smallest negative eigenvalue is identified with the compression oxis (P). PLG are the plunges and AZM the azimuths of the o»es.

4. BEST DOUBLE COUPLE. If the eigenvalue (T) is 0*| ond (P) i s ~V£ , then the scalar seismic moment is defined os Mo - 1/2(0"*j 4- C^j ) . The strike, dip ond slip of the first (NP1) ond second (NP2) nodal plones ore calculated from the directions of the P, T, ond N oxes. The'remoinder is a linear-vector dipa Ie; in most cases the magnitude of LVD is small. Although all such decompositions ore highly non-unique, this particular one is the best in esti mating the storting solution for the non linear, constrained double couple inverse problem. The strike, dip, ond slip angles ore defined using the convention of Aki ond Richards (1980, p. 106) ond ore the angles designated there OS Vj ,9 , X , respectively.

A. M. Dziewonski, G. Ekstrom ond M. P. Salgonik, Department of Earth and Planetary Sc ; ences, Harvard University, Cambridge, MA 02138

Aki, K. ond Richards, P G., Quantitative Sei smoIogy, VoIume 1, W. H. Freeman, Son Francisco, 1980, 557 pp.

Dziewonski, A. M., Chou, T. A , ond Woodhouse, J. H., 1981, Determination of earthquake source parameters from waveform doto for studies of global ond regional seismicity: Journal of Geophysical Research, v 86, p. 2825-2852.

Dziewonski, A. M ond Woodward, R.L., 1991, Acoustic imaging at the planetary scale, in Acoustical Imaging, Vol. 19, E. Ermert ond H -P Horjes, eds , Plenum Press (in press).

Ekstrom, G., 1989, A very brood bond inversion method for the recovery of earthquake source parameters: Tectonophysics, v. 166, p 73-100.

OTHER SEISMIC MOMENTS

1. The seismic moment (Mo) contributed by the University of California, Berkeley (BRK), is given for regional eorth quokes based on Wood-Anderson torsion seismograms recorded within 300 km of the epicenter with peak-to-peok ampli tudes of at least 3 mm. This seismic moment (Mo) in dyne-cm is defined by Log Mo - 16.74 + 1.22Log(CD_), where C is the maximum peak-tc-peok amplitude in mm, D is the duration in seconds from the time of the S-wove onset to the lost time thot the peol- -1o-peok amplitude exceeds C/3, and _ is the epicentrol distance in km. Seismic moments quoted in "Preliminary Determination of Epicenters" ore converted to Newton-meters (1 Newton-meter - 10**7 dyne-cm).

Bolt. B.A. and Herroiz, M 1983, Simplified estimation of seismic moment from seismogroms: Bulletin of the Seismo- logicol Society of America, v. 73, p. 735-748.

2. Beginning with November, 1988, seismic moments for selected events hove been contributed by the Laborotoire de Geophysique, Papeete, French Polynesia (PPT). These moments ore computed from mantle Rayleigh ond Love waves using the method of Tolondier, Reymond ond Okol (1987 and 1990).

Talondier, J., Reymond, D. ond Okol, E.A. 1987, Use of o variable period montle magnitude for the rapid one-stotion estimation of seismic moments: Geophysical Research Letters, v. 14, no. B, p. 840-843.

Okal, E.A.. ond Tolandier. J. 1990. Mm. Extension to Love Waves of the Concept of a Variable-Period Mantle Magni tude: Pure ond Applied Geophysics, v. 134, p. 355-384.

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.DEPARTMENT OF THE INTERIOR/GEOLOGICAL SURVEYNational Earthquake Information Center

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NORTHWESTERN BALKAN REGION. ML 2.4 (TTG).OFF COAST OF NORTHERN CHILEOFF .. COAST OF N. ISLAND. N.Z.IRIAN JAYA REGION, INDONESIAFRANCE. ML 2.0 (STR).NEAR ISLANDS. ALEUTIAN ISLANDSGERMANY. ML 2.7 (STR). MD 2.4 (UCC).NEAR ISLANDS, ALEUTIAN ISLANDSSOUTHERN ALASKA. <AEIC>.IONIAN SEA. ML 3.4 (ATH).SAN JUAN PROVINCE, ARGENTINALEEWARD ISLANDS. ML 3.3 (FDF). MD 3.3 (1RN).NEAR NORTH COAST OF COLOMBIA. MD 4.2 (UPA).NORTHWESTERN BALKAN REGION. ML 3.5 (ZAG). 3.4 (LOG). MD3.6 (LJU). 3.3 (TRl). Felt in the Otococ oreo. Croatia.SOUTHERN CALIFORNIA. <PAS-P>. ML 3 2 (PAS). 3.0 (GS).Fel t.CENTRAL CALIFORNIA. <GM-P> MD 2.1 (GM). ML 2.4 (BRK).Felt by many people in the epicentral area. Felt atBerkeley and Kensington.SOUTHERN CALIFORNIA. <PAS-P>. ML 3.1 (PAS), 2.8 (GS).MONA PASSAGENEAR EAST COAST OF KAMCHATKANORTHWESTERN BALKAN REGION. ML 3.6 (TTG). 3.5 (VIE).Felt (V) in the Bojino Basta area, Yugoslavia.CENTRAL ALASKA. <AEIC>. ML 2.5 (AElC). Felt in theFoi rbonks oreo.HOKKAIDO, JAPAN REGIONSAN JUAN PROVINCE. ARGENTINAAFGHANISTAN-TAJIKISTAN BORD REG.WESTERN AUSTRALIAYUNNAN, CHINA. ML 4.5 (BJI).NEAR EAST COAST OF KAMCHATKATURKEY. MD 2.7 (ISK).TURKEY. MD 2.7 (ISK). Felt at Istanbul.WINDWARD ISLANDS. MD 3 3 (TRN).NORTHERN COLOMBIANEAR SOUTH COAST OF FRANCE. ML 2.8 (STR).NORTH ISLAND. NEW ZEALAND8ANDA SEAPERU-BRAZIL BORDER REGIONHOKKAIDO. JAPAN REGIONLEEWARD ISLANDS. ML 3.5 (FDF). MD 3.6 (TRN).SOUTHERN ALASKA. <AElC>.SICILYNEAR COAST OF CENTRAL CHILE. MD 3.4 (SAN).ANDAMAN ISLANDS, INDIASTRAIT OF GIBRALTAR. MD 3-2 (RBA). mbLg 3.1 (MOD).IRAN-IRAQ BORDER REGION. Felt at Mehron and Dehloron.I ran.SOUTH OF PANAMA. MD 4.1 (UPA).BANDA SEASOUTH OF PANAMA. MD 4.3 (UPA).TURKEY. MD 3.2 (ISK).CHILE-ARGENTINA BORDER REGION. MD 3.3 (SAN).SOUTHERN ALASKA. <AEIC>. Felt (III) ot Port Graham.SAN JUAN PROVINCE, ARGENTINAAEGEAN SEA

Annual Subscriptions: Superintendent of Documents, U.S. Government Printing Office, Washington, D.C. 20402. Bock issues: Baoks and Open-File Reports Section, U.S Geolagical Survey, Box 25425, Denver, CO B0225.

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NORTHERN ITALY. ML 2.1 (GEN).CHILE-ARGENTINA BORDER REGION. MO 3 . 1 (SAN).TURKEY. MO 2.8 ( ISK) .TURKEY. MO 3.1 ( ISK) .TURKEY. MO 2.7 ( I SK ) .OFF COAST OF ECUADORNORTHERN XINJIANG, CHINA. Some domoge in He j ing CountyEASTERN NEW GUINEA REG., P.N.G-KERMADEC ISLANDS REGION. Mw 5.4 (HRV) . Felt (IV) onRoou I I s I ond .KERMAOEC ISLANDS REGION. Mw 5.6 (HRV) . Ms 5.6 (BRK).Fe 1 t (IV) on Raaul 1 stand.TURKEY. MO 2.5 (ISK).AEGEAN SEAOFF COAST OF CENTRAL CHILE. MD 4.4 (SAN).GREECE. ML 3.0 (ATM) .NEAR COAST OF CENTRAL CHILE. MD 4.6 (SAN). Felt (V) atLo Liguo, Popudo ond Ouintero; (IV) at Volporoiso,Ouilloto ond Son Felipe; (III) at Santiago and SanAn ton i o .CENTRAL ITALYSOUTHERN ITALYSOUTH OF KERMADEC ISLANDSGREECE. ML 3.2 (ATM).GREECEMARIANA ISLANDS. Mw 5 7 (HRV). Felt lightly on Soipan.CRETE. ML 4.3 (ATH)SOUTH OF FIJI ISLANDSSOUTHEAST INDIAN RIDGE. Mw 5.4 (HRV).OFF COAST OF NORTHERN CHILEGERMANY. ML 2. 5 (STR) .GREECEVANCOUVER ISLAND REGION <PGC-P>. ML 3.7 (PGC).AEGEAN SEA MD 3 . 3 ( !Sk) .GREECE-BULGARIA BORDER REGIONCHILE-ARGENTINA BORDER REGION. MD 3.5 (SAN).MENDOZA PROVINCE. ARGENTINA MD 4.1 (SAN).KYUSHU, JAPANCALIFORNIA-NEVADA BORDER REGION. <GM-P>. MD 2.9 (GM).ML 3.0 (BRK) .MENDOZA PROVINCE, ARGENTINAOFF EAST COAST OF HONSHU, JAPANTURKEY. MD 2-7 ( I Sk ) .MINDANAO, PHILIPPINE ISLANDS. MW 5.3 (HRV).NEAR COAST OF NICARAGUAAEGEAN SEA. MD 3 3 ( 1 SK ) .LUZON, PHILIPPINE ISLANDS. Mw 5.6 (HRV). Felt in theMan i 1 o or eo .NEAR COAST OF CENTRAL CHILE. MD 3.4 (SAN).MONTANA. <BUT>. ML 3.1 (BUT).FRANCE. ML 2.9 (LDG). 2.9 (STR).SERAM. INDONESIANEAR WEST COAST OF COLOMBIA. MD 4 3 (UPA).SAN JUAN PROVINCE, ARGENTINASOUTHERN ALASKA. <AE I C> . ML 3.4 (AEIC).CENTRAL ITALYNORTH ISLAND. NEW ZEALANDSOUTH OF MARIANA ISLANDSCENTRAL MEVICOSOUTHERN ALASKA. <AE I C> .TURKEY. MD 3.6 ( I Sk ) .CERAM SEASOUTH OF MARIANA ISLANDSCHILE-ARGENTINA BORDER REGION. MD 3.5 (SAN).GREECE. ML 4 6 (ATH). 4.6 (TTG). Felt in parts ofAttiki, Korinthio ond Voiotio Provinces.SOUTHERN GREECECHILE-ARGENTINA BORDER REGiONSOUTHERN ALASKA. <AE I C> .MYANMAR- INDIA BORDER REGIONSOLOMON ISLANDSSERAM. INDONESIA. Felt (II) at Ambon.GREECESOUTH ISLAND, NEW ZEALANDGREECE. ML 3.6 (ATH) .WESTERN ARIZONA. ML 2.4 (GS). Foreshock.WESTERN ARIZONA. ML 3.6 (GS). Felt (IV) at GrandCanyon.GREECE. ML 2.9 (ATH).GREECE. ML 2.8 (ATH) .COOK STRAIT. NEW ZEALANDNEAR COAST OF CENTRAL CHILE. MD 4.1 (SAN).GREECE. ML 2.8 (ATH).GREECEPHILIPPINE ISLANDS REGIONTURKEY. MD 3.2 (ISK). Felt at Izmir.TURKEY. MD 3.3 (ISK). Felt at Izmir.TURKEY. MD 3.2 ( ISK) .TURKEY. MD 3.3 (ISK). Felt at Adopazari.TURKEY. MD 2.7 (ISK).TURKEY. MD 2.7 ( ISK) .PYRENEES. ML 1 .0 (STR).CENTRAL EAST PACIFIC RISE

PAGE 3 FEB 1993

04 11 20 43.9 38.213 N 22.694 E 13 1.1 12 GREECE. ML 3.0 (ATM).94 11 41 27.4% 39.149 N 27.641 E 19 G 9.1 5 TURKEY. MD 2.6 (ISK).94 12 31 22.8 34.991 S 179.636 E 363 * 4.3 1.9 29 SOUTH OF KERMADEC ISLANDS94 13 99 18.2? 7.99 S 134.22 E 33 N 4.7 1.9 6 ARU ISLANDS REGION, INDONESIA94 13 39 49.4* 9.951 N 126.420 E 57 * 4.7 4.3 1.2 29 MINDANAO, PHILIPPINE ISLANDS94 13 45 53.4* 31.685 S 69.795 W 165 ? 9.5 14 SAN JUAN PROVINCE, ARGENTINA. MD 4.9 (SAN).94 14 14 39.7 37.859 N 26.956 E 19 G 9.7 11 DODECANESE ISLANDS. MD 3.5 (ISK).04 14 28 23.0% 39.069 N 27.645 E 19 G 0.4 6 TURKEY. MD 2.7 (ISK).94 14 43 12.9 42.964 N 144.179 E 99 4.9 9.9 142 HOKKAIDO. JAPAN REGION94 14 48 30.6% 43.899 N 11.906 E 19 G 1.1 19 CENTRAL ITALY. MD 2.4 (FIR).94 14 56 44.1 19.007 N 126.367 E 47 * 4.9 4.4 1.1 57 PHILIPPINE ISLANDS REGION04 15 20 26.1 12.495 N 142.033 E 67 * 4.9 0.7 32 SOUTH OF MARIANA ISLANDS04 15 31 04.1 12.401 N 142.090 E 76 * 4.8 1.1 32 SOUTH OF MARIANA ISLANDS04 16 24 40.74 62.743 N 149.530 W 69 37 CENTRAL ALASKA. <AEIC>. ML 2.6 (AEIC).04 16 28 32.3 12.495 N 141.923 E 27 D 5.7 5.2 1.1 153 SOUTH OF MARIANA ISLANDS. Mw 5.5 (HRV).04 17 02 10.7* 12.474 N 141.498 E 33 N 4.5 1.3 7 SOUTH OF MARIANA ISLANDS04 17 52 28.5? 14.56 S 167.27 E 33 N 4.4 1.1 6 VANUATU ISLANDS04 18 04 28.0 1.286 S 24.277 W 10 G 5.0 5.0 1.3 66 CENTRAL MID-ATLANTIC RIDGE. Mw 5.5 (HRV).04 18 28 44.2* 40 236 N 36.849 E 10 G 1.4 8 TURKEY MD 3.9 (ISK).04 19 41 32.3 24.909 N 62.855 E 26 D 5.1 4.8 1.1 192 OFF COAST OF PAKISTAN. Felt olong the coost of

southwestern Pokiston.04 20 49 02.3 40.669 N 22.721 E 10 G 0.2 7 GREECE04 21 49 45.6* 38.127 N 22.650 E 10 G 1.5 5 GREECE. ML 2.8 (ATH).04 21 55 52.8* 42.904 N 18.262 E 10 G 0.5 9 NORTHWESTERN BALKAN REGION. ML 2.3 (TTG).04 21 57 47.2% 13.531 N 123.067 E 33 N 1.5 5 LUZON, PHILIPPINE ISLANDS04 22 64 38.9* 56.397 N 7.613 E 10 G 0.8 6 GERMANY. ML 2.2 (LDG).04 23 53 00.9 38.274 N 22.114 E 10 G 0.9 8 GREECE. ML 3.0 (ATH).05 00 43 11.0% 33.546 S 71.989 W 13 0.6 10 NEAR COAST OF CENTRAL CHILE. MD 3.7 (SAN).05 01 21 27.54 58.009 N 155.007 W 65 3.7 76 ALASKA PENINSULA. <AEIC>. ML 3.6 (AEIC).05 02 96 01.44 34.025 N 117.584 W 4 5 SOUTHERN CALIFORNIA. <PAS-P>. ML 2.6 (PAS). Felt.05 03 18 49.4% 40.833 N 22.786 E 10 G 0.1 5 GREECE05 03 59 13.0% 40.840 N 27.678 E 10 G 0.9 5 TURKEY. MD 2.6 (ISK).05 65 05 43.9? 37.65 S 179.06 W 10 G 0.7 12 EAST OF NORTH ISLAND, N.Z.05 05 13 12.0? 32.23 S 70.25 W 106 G 0.4 9 CHILE-ARGENTINA BORDER REGION. MD 3.4 (SAN).05 05 36 07.7* 63.067 N 150.841 W 128 58 CENTRAL ALASKA. <AEIC>.05 05 55 59.4* 16.538 N 120.827 E 10 G 4.3 1.4 7 LUZON, PHILIPPINE ISLANDS05 06 00 19.6* 15.143 N 88.256 W 140 D 4.6 1.4 26 HONDURAS05 06 37 23.7 12.542 N 141.985 E 50 D 5.2 1.1 95 SOUTH OF MARIANA ISLANDS Mw 5 5 (HRV).05 07 15 21.1 12.573 N 141.882 E 28 D 5.7 5.7 1.1 185 SOUTH OF MARIANA ISLANDS. Mw 5.9 (HRV).05 07 26 40.8 12.561 N 141.728 E 21 D 5 2 1.2 37 SOUTH OF MARIANA ISLANDS05 67 32 53.0 11.628 S 166.329 E 51 D 5.2 1.0 96 SANTA CRUZ ISLANDS05 08 40 53.8% 43.693 N 10.589 E 10 G 0.8 5 CENTRAL ITALY05 09 14 22.4% 39.104 N 27.587 E 10 G 0.9 6 TURKEY. MD 2.8 (I SK).05 09 52 48.3* 13.512 N 123.062 E 24 D 4.6 4.2 1.2 13 LUZON. PHILIPPINE ISLANDS05 09 53 36.7* 49.182 N 6.988 E 10 G 1.2 6 GERMANY05 09 54 17.3? 39.11 N 27.54 E 10 G 0.5 4 TURKEY. MD 2.6 (ISK).05 09 55 57.5* 39.598 N 20.682 E 10 G 1.3 10 GREECE-ALBANIA BORDER REGION05 09 59 15.54 62.671 N 149.642 W 72 44 CENTRAL ALASKA. <AEIC>.05 10 12 51.9? 37.93 N 31.41 E 10 G 1.2 6 TURKEY. MD 3.2 (ISK)05 10 27 12.4* 19.984 N 120.921 E 79 * 4.2 1.3 15 PHILIPPINE ISLANDS REGION05 10 39 14.4* 57.733 S 29.511 W 33 N 4.8 4.9 1.1 17 SOUTH SANDWICH ISLANDS REGION05 11 24 21.8% 39.409 N 16.867 E 10 G 1.4 6 SOUTHERN ITALY05 11 58 15.2* 41.587 N 22.020 E 10 G 0.5 6 NORTHWESTERN BALKAN REGION. ML 2.1 (SKO).05 12 10 44.2? 36.30 N 3.09 W 10 G 1.4 6 STRAIT OF GIBRALTAR. mbLg 3.2 (MDD).05 12 29 44.6? 30.42 S 116.83 E 10 G 0.4 4 WESTERN AUSTRALIA05 12 35 12.8* 38.338 N 26.820 E 10 G 0.3 6 AEGEAN SEA. MD 3.1 (fSK).05 13 17 49.4? 36.88 S 176.64 E 301 ? 0.5 21 OFF E. COAST OF N. ISLAND, N Z.05 13 28 26.3? 57.59 S 29.13 W 33 N 4.9 1.4 16 SOUTH SANDWICH ISLANDS REGION05 13 42 38.1? 42.42 N 24.13 E 10 G 0.5 8 BULGARIA05 13 54 41.3* 23.706 N 108.101 E 10 G 1.3 9 SOUTHEASTERN CHINA ML 4.0 (BJI).05 14 64 55.0? 13.79 N 122.57 E 33 N 4.4 1.0 6 LUZON, PHILIPPINE ISLANDS05 14 17 29.7 2.468 N 128.349 E 202 * 4.6 0.4 18 HALMAHERA. INDONESIA05 14 32 23.5 38.703 N 67.121 E 33 N 4.4 1.4 25 SOUTHEASTERN UZBEKISTAN05 15 41 17.4% 40.499 N 29.247 E 10 G 0.7 9 TURKEY. MD 2.8 (ISK).05 17 10 25.0 39.240 N 119.547 W 5 G 0.8 30 NEVADA. ML 3.6 (GS). 3.9 (BRK). Felt (III) ot Corson

City and (II) at Rena.65 17 54 44 0 37.105 N 141.238 E 58 4.7 1.1 83 NEAR EAST COAST OF HONSHU, JAPAN05 18 32 04 6» 31 922 N 131.243 E 10 G 3.9 1.2 7 KYUSHU, JAPAN05 20 49 27.0* 12.036 S 166.353 E 73 * 5.1 0.9 23 SANTA CRUZ ISLANDS05 21 25 03.9 42.866 N 144.003 E 95 D 4.5 0.9 46 HOKKAIDO, JAPAN REGION05 21 31 35 8 6 630 S 154.832 E 72 * 4.9 0.9 21 SOLOMON ISLANDS05 22 34 38.6* 38.392 N 29.276 W 10 G 4.3 1.0 17 AZORES ISLANDS. Felt (IV) at Copelo. Praia do Norte and

Ribeiro da Cobo; (III) ot Costelo Bronco, Horto, Ribeirinha and Saloa, Foial. Felt (II) throughout the western port af Pica.

05 22 57 23.5 29.248 N 100.779 E 10 G 3.9 0.7 9 SICHUAN. CHINA. ML 3.6 (BJI).05 23 90 32.7 43.415 N 5.414 E 10 G 0.9 17 NEAR SOUTH COAST OF FRANCE. ML 2.5 (STR).05 23 49 50.64 60.129 N 140.909 W 9 26 SOUTHEASTERN ALASKA. <AEIC>. ML 2.8 (AEIC). 3.0 (PGC).66 00 54 28.1* 43.806 N 128.345 W 10 G 3.9 1.0 19 OFF COAST OF OREGON06 01 63 64.7 39.474 N 16.792 E 33 N 1.4 13 SOUTHERN ITALY66 61 65 43.7 31.177 N 141.734 E 35 D 4.6 1.0 33 SOUTH OF HONSHU. JAPAN06 01 14 08.2 41.257 N 19.627 E 10 G 1.2 58 ALBANIA. ML 3.6 (TTG). MD 3.7 (ATH).06 01 20 48.54 36.119 N 117.887 W 3 12 CALIFORNIA-NEVADA BORDER REGION. <PAS-P>. ML 2.8 (PAS).

2.9 (GS).06 01 44 01.7* 50.362 N 18.866 E 10 G 0.7 7 POLAND. ML 2.9 (WAR).06 02 69 45.54 36.666 N 89.736 W 7 31 NEW MADRID, MISSOURI REGION. <SLM-P>. MD 3.5 (SLM).

3.5 (TEIC). mbLg 3.4 (GS). 3.3 (TUL). Felt (IV) ot Sikeston; (III) ot Groyridge, Lilbaurn, Matthews and Pormo; (II) ot CoruthersviI Ie and Eost Proirie. Also felt ot New Madrid. Felt (IV) in the Bagota-Miston-RidgeIy area, Tennessee.

66 62 14 68.9? 41.31 N 19.72 E 16 G 6.4 16 ALBANIA66 62 36 47.1* 39.810 N 25.697 E 16 G 1.5 8 AEGEAN SEA. MD 2.9 (ISK).

FEB 1993 PAGE 4

06 02 44 36.0 39.760 N 19.685 E 7 3.5 1.1 61 GREECE-ALBANIA BORDER REGION. ML 4.0 (ATH). 3.8 (ROM).3.5 (TTG).

06 03 31 03.7X 41.715 S 173.732 E 80 * 0.8 25 SOUTH ISLAND, NEW ZEALAND06 03 48 15.3X 38.203 N 27.262 E 10 G 1.3 5 TURKEY. MD 3.0 (ISK).06 04 21 56.5 6.025 S 153.886 E 72 * 5.1 0.9 20 NEW BRITAIN REGION. P.N.G.06 05 07 09.8? 15.59 S 72.25 W 120 ? 4.5 0.9 9 SOUTHERN PERU06 05 15 32.6* 6.562 S 147.127 E 19 * 4.3 1.1 6 EASTERN NEW GUINEA REG.. P.N.G. ML 4.3 (PMG).06 06 51 29.2 17.999 S 167.696 E 10 G 4.8 4.4 1.2 14 VANUATU ISLANDS06 06 59 32.9 56.811 N 151.589 W 10 G 4.8 1.2 77 KODIAK ISLAND REGION. ML 4.2 (PMR), 3.9 (AEIC). Felt

(III) at Kodiak.06 07 05 34.3% 40.326 N 23.910 E 10 G 0.6 8 GREECE06 07 34 55.2 32.243 S 69.331 W 120 G 0.6 16 MENOOZA PROVINCE. ARGENTINA. MD 3.7 (SAN).06 08 49 27.1* 51.514 N 6.451 E 10 G 1.4 6 GERMANY. ML 2.4 (BNS).06 09 18 58.3 39.250 N 119.502 W 5 G 0.9 12 NEVADA. ML 2 9 (GS).06 09 53 55.5X 39.113 N 27.615 E 10 G 0.4 5 TURKEY. MD 28 (ISK).06 10 08 07.3 38.546 N 30.972 E 10 G 1.0 6 TURKEY. MD 3.2 (ISK).06 10 43 18.9? 31.50 S 67.78 W 33 N 0.7 4 SAN JUAN PROVINCE, ARGENTINA06 11 14 44.6X 39.334 N 27.692 E 10 G 0.4 5 TURKEY. MD 2.8 (ISK).06 11 22 12.5 47.290 N 10.866 E 10 G 0.3 7 AUSTRIA ML 2.0 (FUR). 1.9 (VIE).06 12 03 57.8 51.399 N 176.768 W 40 D 4.8 1.1 53 ANDREANOF ISLANDS, ALEUTIAN IS. Felt (III) on Adak.06 12 05 29.0? 6.59 S 147.63 E 60 ? 3.9 1.3 5 EASTERN NEW GUINEA REG.. P.N.G.06 12 39 18. 2% 39.498 N 26.861 E 10 G 1.0 5 TURKEY. MD 2.9 (ISK).06 12 41 37.34 60.660 N 146.874 W 15 42 SOUTHERN ALASKA. <AEIC>. ML 2.7 (AEIC).

a 06 12 42 51.6 56.522 S 25.765 W 33 N 5.3 5.5 1.2 123 SOUTH SANDWICH ISLANDS REGION. Mw 5.7 (HRV).06 13 45 37.4& 62.627 N 151.831 W 15 14 CENTRAL ALASKA. <AEIC>. ML 2.4 (AEIC). 3.0 (PMR).06 14 08 02.2 7.470 S 133.704 E 33 N 4.9 1.0 35 ARU ISLANDS REGION. INDONESIA06 14 52 51.9? 31.97 S 71.58 W 10 G 0.7 9 NEAR COAST OF CENTRAL CHILE. MD 3.7 (SAN).06 15 04 27.2% 39.120 N 27.676 E 10 G 0.5 6 TURKEY. MD 2.7 (ISK).06 15 16 31.4 43.986 N 7.549 E 10 G 0.7 18 NEAR SOUTH COAST OF FRANCE. ML 2.3 (LOG). 2.1 (GEN).06 15 24 04.1& 63.088 N 150.723 W 129 4.7 149 CENTRAL ALASKA. <AEIC>. Felt (III) at Tolkeetna.06 15 55 56.7% 40.017 S 174.633 E 145 0.5 27 COOK STRAIT. NEW ZEALAND06 16 13 07.2» 38.778 N 75.778 E 33 N 3.8 0.6 9 SOUTHERN XINJIANG, CHINA06 16 22 25.2? 23 25 S 178.61 W 486 ? 4.2 1.2 22 SOUTH OF FIJI ISLANDS06 18 10 55.9* 51.963 N 156.986 E 126 ? 4.5 0.5 12 KAMCHATKA06 18 12 35.6» 41.151 N 19.675 E 10 G 0.7 11 ALBANIA. ML 2.3 (TTG).06 18 15 23.4 31.782 S 71.897 W 33 N 1.1 25 NEAR COAST OF CENTRAL CHILE. MD 4.5 (SAN).86 18 20 57.7 44.266 N 8 316 E 10 G 1.1 15 NORTHERN ITALY ML 2.2 (GEN).86 18 23 34.8% 44.296 N 8.297 E 10 G 0.2 6 .NORTHERN ITALY ML 2.0 (GEN).06 18 46 37.2 40.948 N 22.406 E 10 G 0.5 20 GREECE. ML 3.1 (SKO).86 18 44 07.9% 40.637 N 16 023 E 33 N 0.9 5 SOUTHERN ITALY06 19 18 02.9 19.416 N 65.175 W 10 G 4 5 0.9 20 PUERTO RICO REGION. ML 4.6 (FDF).06 19 41 32.64 59.025 N 152 822 W 68 42 SOUTHERN ALASKA. <AEIC>. ML 2.7 (AEIC).86 22 01 30.5% 40 220 N 29.531 E 10 G 1.2 7 TURKEY. MD 2.7 (ISK)06 22 12 00.3 38.234 N 22 885 E 33 N 0.7 11 GREECE. ML 3.0 (ATH).06 22 56 13.7% 38.031 N 14.156 E 10 G 0.8 5 SICILY86 23 26 55.1* 33.347 S 70 391 W 94 ? 0.3 11 CHILE-ARGENTINA BORDER REGION MD 3.6 (SAN).06 23 36 24.9% 41 234 S 172 533 E 245 « 0.2 20 SOUTH ISLAND, NEW ZEALAND07 01 38 36.04 57.114 N 155 035 W 38 4.1 59 ALASKA PENINSULA. <AEIC>. ML 38 (AEIC). Felt (IV) at

Larsen Boy.07 02 39 50.1 18.625 S 169.315 E 252 4.7 1.1 116 VANUATU ISLANDS07 02 46 39.9% 16.525 N 99.637 W 10 G 1.2 5 NEAR COAST OF GUERRERO. MEXICO07 03 25 48.04 34.228 N 116.762 W 6 G 6 SOUTHERN CALIFORNIA. <PAS-P>. ML 3.0 (PAS).07 04 04 59.5 45.891 N 14.806 E 10 G 0.9 9 NORTHWESTERN BALKAN REGION. MD 2.8 (LJU).

a 07 05 02 46.4* 29.166 S 176.921 W 21 D 5.3 5.1 1.0 44 KERMADEC ISLANDS REGION. Mw 5.4 (HRV).07 05 51 38.7% 30.307 S 116.814 E 10 G 0.6 5 WESTERN AUSTRALIA07 07 46 00.0% 41.761 N 13.726 E 10 G 0.9 7 SOUTHERN ITALY07 08 31 44.6? 39.11 N 27.58 E 10 G 0.7 4 TURKEY. MD 2 6 (ISK).07 08 47 07.5% 44.308 N 8.269 E 10 G 0.2 6 NORTHERN ITALY ML 1.7 (GEN).07 09 18 53.7 57.406 N 142.871 W 10 G 0.7 67 GULF OF ALASKA. ML 3.5 (AEIC). 3.3 (PGC).07 10 37 12.3% 39 057 N 27.621 E 33 N 0.8 5 TURKEY. MD 2.7 (ISK).07 10 39 31.6% 39.141 N 27.538 E 10 G 0.9 5 TURKEY. MD 28 (ISK).

a 07 11 08 19.3 44.378 N 147.593 E 108 5.3 0.8 261 KURIL ISLANDS Mw 5.0 (HRV).07 11 26 21.74 63 395 N 152 836 W 0 42 CENTRAL ALASKA. <AEIC>. ML 2.9 (AEIC).07 11 41 20.6% 38.690 N 27.484 E 33 N 0.4 5 TURKEY. MD 2.7 (ISK).07 12 18 17.14 62.171 N 150.414 W 1 49 CENTRAL ALASKA. <AEIC>. ML 2.5 (AEIC).07 12 40 17.0? 29 58 S 175 95 W 33 N 4.3 1.4 10 KERMADEC ISLANDS REGION07 12 56 08.5 51.241 N 178 663 W 33 N 4 7 4.4 0.9 56 ANDREANOF ISLANDS. ALEUTIAN IS07 13 02 44.4* 21.736 N 94.806 E 122 » 40 0.5 10 MYANMAR

f 07 13 27 42.0 37 634 N 137.245 E 11 G 6.3 6.2 0.9 673 NEAR WEST COAST OF HONSHU. JAPAN. Mw 6.6 (GS). 6.3(HRV). Ms 5.9 (BRK). Mo-1.0*10**19 Nm (PPT). At least sixteen people injured and some damage in Ishikawa, Toyomo and Niigota Prefectures. Landslides occurred at Suzu. Maximum intensity IV (JMA) reported at Wajima. Felt throughout much of central Honshu. Two events about 1.5 seconds opart. Depth fram broadband displacement seismagroms, based an second event.

07 14 07 10.0* 37.660 N 137.448 E 47 * 4.7 0.6 10 NEAR WEST COAST OF HONSHU, JAPAN07 14 32 37.1 38.175 N 22.836 E 33 N 3.5 1.1 24 GREECE. MD 3.5 (ATH).07 14 48 31.7 15.018 N 58.303 W 15 4.6 0.8 37 NORTH ATLANTIC OCEAN. ML 4.9 (FDF). MD 4.5 (TRN).07 15 01 33.8X 39.075 N 27.530 E 33 N 0.6 5 TURKEY. MD 2.7 (ISK).07 15 09 28.0 37.549 N 137.601 E 57 * 4.5 0.9 12 NEAR WEST COAST OF HONSHU, JAPAN07 15 38 23.1 13.671 N 120.807 E 111 D 4.8 1.0 48 MINDORO. PHILIPPINE ISLANDS07 16 22 08.0 2.821 N 128.946 E 45 * 4.9 4.4 0.9 27 HALMAHERA, INDONESIA07 16 29 12.9 49.359 N 128.597 W 10 G 4.8 5.0 1.1 92 VANCOUVER ISLAND REGION07 16 31 32.4* 2.837 N 128.867 E 60 * 4.2 0.2 9 HALMAHERA, INDONESIA07 16 44 36.2X 45.082 S 166.129 E 33 N 0.7 16 OFF W. COAST OF S. ISLAND, N.Z. ML 4.0 (WEL).07 17 06 05.7 37.734 N 137.273 E 17 D 4.8 4.7 0.9 91 NEAR WEST COAST OF HONSHU, JAPAN07 17 20 50.6 42.385 N 18.992 E 5 G 1.1 12 NORTHWESTERN BALKAN REGION. ML 2.4 (TTG).07 18 06 26.9 56.907 N 143.339 W 10 G 0.6 32 GULF OF ALASKA. ML 2.8 (AElC), 2.5 (PGC).07 18 26 17.9* 33.063 S 77.881 E 10 G 4.9 1.2 7 MID-INDIAN RIDGE07 18 50 05.6 30.359 N 130.616 E 82 D 4.7 1.0 57 KYUSHU. JAPAN07 19 04 40.4? 5.32 S 153.87 E 33 N 4.6 0.4 10 NEW IRELAND REGION, P.N.G.07 20 17 35.0 44.581 N 10.530 E 10 G 1.2 11 NORTHERN ITALY. ML 2.8 (LOG).

PAGE 5 FEB 1993

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PAGE FEB 1993

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CHILE-ARGENTINA BORDER REGIONGERMANY. ML 1 .9 (STR) .FRANCE. ML 2.5 (LDG) .CENTRAL CALIFORNIA. <PAS-P>. ML 3.5 (PAS), 3.2 (GS).GREECE. MD 3.2 (ATH) .SOUTHERN NORWAY. MD 1.5 (BER).DODECANESE ISLANDS. MD 3.2 (ISK).TONGA ISLANDSNORTH ISLAND, NEW ZEALANDGREECE. MD 3. 1 (ATH) .GERMANY. MD 2.6 (UCC). ML 2.5 (STR).SOUTHERN CALIFORNIA. <PAS-P>. ML 2.6 (PAS), 2.6 (GS) .SOUTHERN IRANSOUTHERN IRANNORTH SEA. ML 3.8 (BGS). MD 3.4 (BER).POLAND. ML 3.3 (VIE) .REPUBLIC OF SOUTH AFRICA. mbLg 3.4 (8UL).SAN LUIS PROVINCE, ARGENTINANORTHWESTERN BALKAN REGIONSPAIN. mbLg 2.4 (MDD) .NEAR EAST COAST OF KAMCHATKASPAIN. mbLg 2.2 (MDD) .SAN JUAN PROVINCE, ARGENTINASOUTHERN ALASKA <AE!C>. Felt (II) at Homer.KODIAK ISLAND REGION <AE I C> . ML 2.7 (AEIC).NORTHERN CHILENEAR COAST OF CH I APAS , MEXICO

ML 2 4 (GEN), 2.3 (LDG). (GEN).

MD 3.4 (ATH). Felt ot

MD 4 1 (SAN).

RUSSIA. Mw 5.1 (HRV)

ML 4.5 (8JI).

NORTHERN ITALY NORTHERN ITALY. ML 2. 1 GREECE-BULGARIA BORDER REGION KurdzhoIi. Bulgaria. MINDANAO. PHILIPPINE ISLANDS GREECE. MD 3.4 (ATH) ML 3.2 (THE) SAN JUAN PROVINCE, ARGENTINA FLORES REGION. INDONESIA NORTHERN MID-ATLANTIC RIDGE SAN JUAN PROVINCE, ARGENTINA ROMAN I ANORTHERN CHILENORTH ISLAND, NEW ZEALANDFRANCE. ML 3.0 (LDG)GREECE. MD 3.3 (ATH). ML 3.0 (THE).OFF EAST COAST OF HONSHU, JAPANALBANIA. ML 3.2 (SKO), 3.1 (TTG).SOUTH SANDWICH ISLANDS REGIONNEAR COAST OF NORTHERN CHILESICILYTURKEY. MD 2.7 (ISK).EAST OF SEVERNAYA ZEMLYAGREECEGERMANY. ML 2 5 (VIE).NORTHERN XINJIANG, CHINAFRANCE. ML 2.5 (LDG).TONGA ISLANDS REGION. Mw 5.3 (HRV).ALBANIA. ML 3.1 (SKO), 3.1 (TTG), 3.0 (THE).NORTHWESTERN BALKAN REGION. ML 2.5 (THE), 2.2 (SKO).WESTERN MEDITERRANEAN SEASOUTH OF FlJI ISLANDSNORTH OF SEVERNAYA ZEMLYAINDIA-BANGLADESH BORDER REGIONNEW BRITAIN REGION, P.N.G.CENTRAL AL*SKA. <AEIC>. ML 4.4 (AEIC). 4.8 (PMR). Felt(V) at Eogle River; (IV) at Chickoloon, Palmer,Talkeetna and Wosilla; (III) at Anchorage ond Skwentna.TALAUD ISLANDS, INDONESIAREPUBLIC OF SOUTH AFRICA. mbLg 3.4 (BUL).EASTERN NEW GU '< NEA REG., P.N.G.CALIFORNIA-NEVADA BORDER REGION <GM-P>. MD 3.0 (GM).SOUTHERN GREECE. MD 3.6 (ATH).SOUTH SANDWICH ISLANDS REGIONTALAUD ISLANDS, INDONESIANEAR EAST COAST OF HONSHU, JAPANNORTHERN ALGERIA. mbLg 3.3 (MDD). Felt in the Tipasaor ea .CHILE-ARGENTINA BORDER REGION. MD 3.5 (SAN).CALIFORNIA-NEVADA BORDER REGION. <GM-P>. MD 3.1 (GM).KYRGYZSTAN-XINJIANG BORDER REG. ML 4.3 (BJI).NORTH ISLAND. NEW ZEALANDNEAR WEST COAST OF HONSHU. JAPANNEAR COAST OF NICARAGUA. MD 5.0 (UPA). Felt in northernCos to Rica.TAJIKISTAN-XINJIANG BORDER REG.HINDU KUSH REGION, AFGHANISTANNEAR COAST OF CENTRAL CHILE. MD 4.5 (SAN).TURKEYSWITZERLAND. ML 2.0 (STR).SOUTHERN ALASKA. <AEIC>. ML 2.5 (AEIC).CHILE-ARGENTINA BORDER REGION. MD 4.5 (SAN). Felt atOuilloto. San FeIipe and Santiago, Chile.SOUTHERN GREECE. MD 4.5 (TTG). Felt in Akhaio, Argolis,Arkadhia, Attiki ond Viotia.NORTH ISLAND, NEW ZEALANDCHILE-ARGENTINA BORDER REGION. MD 3.1 (SAN).

FEB 1993

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5.3

PAGE FEB 1993

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NORTHWEST OF RYUKYU ISLANDSTURKEY. MD 2.7 (ISK) .TURKEY. MD 2.7 ( ISK) .SOUTH ISLAND, NEW ZEALANDTURKEY. MD 2.7 (ISK).SOUTHERN ALASKA. <AEIC>. ML 2.7 (AEIC).TRINIDAD. MD 2.9 (TRN).SOUTHERN GREECE. MD 3.4 (ATH). ML 3.4 (THE).SOUTHERN BOLIVIAAZORES ISLANDS. Felt (IV) on Foiol ond (III) on Pico.SOUTHERN GREECE. MD 3.3 (ATH).OFF E. COAST OF N. ISLAND, N.Z. ML 3.8 (WEL).NORTHWESTERN BALKAN REGION. ML 1.8 (TTG).NEW IRELAND REGION, P.N.G.CALIFORNIA-NEVADA BORDER REGION. <GM-P>. MD 2.2 (GM).GERMANY. mbLg 3.1 (UCC). ML 2.9 (GRF), 2.7 (STR).CENTRAL ALASKA. <AElC>. ML 2.5 (AEIC).SOUTHERN ALASKA. <AEIC>.HEBGEN LAKE REGION. ML 2.7 (GS), 3.1 (BUT). Felt (III)ot Horse Butte northwest of West Yellowstone, Montono.MYANMAREASTERN IDAHO. ML 2.8 (GS), 3.0 (BUT).POLAND. MG 2.8 (WAR).PUERTO RICO REGIONNEAR EAST COAST OF KAMCHATKACENTRAL ALASKA. <AEIC>.KURIL ISLANDSFLORES REGION. INDONESIACENTRAL CALIFORNIA. <BRK>. ML 3.3 (PAS), 3.2 (GS), 2.9(BRK).SOUTHERN GREECE. MD 3.4 (ATH). ML 3.1 (THE).SWITZERLAND. ML 2.5 (LOG), 2.3 (STR).NORTH ISLAND. NEW ZEALANDSOUTH OF MARIANA ISLANDSBANDA SEABANDA SEACENTRAL MEDITERRANEAN SEA. ML 3.7 (THE). MD 3.5 (ATH).OFF EAST COAST OF HONSHU, JAPANCENTRAL ALASKA. <AEIC>.KENAI PENINSULA, ALASKA. <AEIC>. ML 2.6 (AEIC).AZORES ISLANDS. Felt (V) on Foiol, (III) on Pico ond(II) on Soo Jorge.CELEBES SEAOFF COAST OF CENTRAL AMERICAOFF COAST OF CENTRAL AMERICAEASTERN NEW GUINEA REG., P.N.G.SOUTHERN ALASKA. <AEIC>.LEEWARD ISLANDS ML 2.6 (FDF).GREECE. MD 3.0 (ATH).SOUTHERN CALIFORNIA. <PAS-P>. ML 4.2 (PAS). 4.2 (BRK),4.0 (GS). Felt (III) ot Moreno Volley. Also felt otHi ghIond.SWEDEN. MD 3.9 (BER). FeIt.X I ZANGSANTA CRUZ ISLANDS. Mw 5.9 (HRV) Mo-7.9»10**17 Nm(PPT).TURKEY. MD 2.7 (ISK) .TURKEY. MD 2.7 (ISK).EASTERN NEW GUINEA REG.. P.N.G. ML 4.2 (PMG).THE NETHERLANDS. mbLg 3.4 (UCC). ML 3.4 (LDG). 2.9(BNS). Felt olong the Germony-NetherIonds border.TURKEY. MD 2.6 (ISK).VANUATU ISLANDS. Mw 5.1 (HRV).NORTHERN ITALY. ML 3.0 (LDG), 2.7 (GEN), 2.3 (STR).AFGHANISTAN-TAJIKISTAN BORD REG.SOUTHERN GREECE. MD 3.4 (ATH). ML 3.3 (THE).NEAR COAST OF CENTRAL CHILE. MD 3.6 (SAN).TURKEY . MD 2.8 ( ISK).FALKLAND ISLANDS REGIONCHILE-ARGENTINA BORDER REGIONKENAI PENINSULA, ALASKA. <AEIC>-NORTHERN INDIA. ML 4.5 (BJI).NORTHERN COLOMBIASOUTHERN GREECE. MD 3.7 (ATH). ML 3.6 (THE).KENAI PENINSULA, ALASKA. <AEIC>. ML 2.7 (AEIC).SOUTHERN GREECE. MD 3.4 (ATH). ML 3.3 (THE).SOUTHERN GREECE. MD 3.6 (ATH).OFF COAST OF ECUADORSAN JUAN PROVINCE. ARGENTINAHINDU KUSH REGION. AFGHANISTAN. Felt at Chitrol ondPeshowor, Pakistan.SPAIN. mbLg 2.6 (MOD).TURKEY. MD 2.6 (ISK).NEAR WEST COAST OF HONSHU, JAPANCENTRAL CALIFORNIA. <GM-P>. MD 2.8 (GM). ML 2.8 (PAS).2.6 (GS).NORTHERN CALIFORNIA. <BRK>. ML 3.6 (BRK). Felt (IV) otMiddletown.NORTHERN COLOMBIATURKEY. MD 2.5 ( ISK) .CATAMARCA PROVINCE, ARGENTINAFRANCE. ML 2 2 (LDG).XIZANG

FEB 1993 PAGE 10

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NORTHERN ALASKA. <AEIC>. ML 2.6 (AEIC).CHILE-BOLIVIA BORDER REGIONNEAR EAST COAST OF HONSHU, JAPANNORTHERN ITALYNORTHERN ITALY. ML 1.5 (GEN).GERMANY. MD 2.1 (UCC).SOUTHERN IRANGREECE. ML 4.1 (TTG), 3.9 (THE). MD 4.0 (ATH).SAN JUAN PROVINCE, ARGENTINA. MD 4.0 (SAN).GERMANY. mbLg 2.7 (UCC).PHILIPPINE ISLANDS REGIONEL SALVADOR. Felt (III) at San Salvador.KAMCHATKASWITZERLANDKERMADEC ISLANDS REGIONWEST OF GIBRALTAR. mbLg 4.4 (MDD). MD 4.2 (RBA). Felt(IV) in the Cabo de Sao Vicente area, Portugal. Alsofelt at Faro, Portugal.NEAR COAST OF CENTRAL CHILE. MD 3.9 (SAN).CENTRAL ALASKA. <AEIC>. ML 2.5 (AEIC), 3.1 (PMR).NAMIBIASOLOMON ISLANDSNORTH ISLAND, NEW ZEALAND. ML 5.0 (WEL).GERMANY. mbLg 2.9 (UCC). ML 2.8 (STR).RYUKYU ISLANDSWESTERN AUSTRALIACHILE-ARGENTINA BORDER REGION. MD 3.8 (SAN).S I C I LYSOUTH ISLAND, NEW ZEALANDNORTHWEST OF KURIL ISLANDSALBANIA. ML 2.5 (TTG), 2.3 (SKO).CHILE-ARGENTINA BORDER REGION. MD 4.1 (SAN).RYUKYU ISLANDSSOUTH OF FIJI ISLANDSPYRENEES. ML 1.0 (STR).TONGA ISLANDS. Mw 5.4 (HRV). Ms 4.8 (BRK).GREECERVUKYU ISLANDSANDREANOF ISLANDS. ALEUTIAN IS.NEAR COAST OF CENTRAL CHILE. MD 3.2 (SAN).C-REECE-BULGARIA BORDER REGION.NEAR COAST OF PERUTURKEY. MD 2.8 ( I St< ) .SUMBA REGION, INDONESIANEAR COAST OF CENTRAL CHILE.SOUTH OF SUMBA, INDONESIANEAP SOUTH COAST OF FRANCE. ML 2.3 (GEN).NEAP SOUTH COAST OF FRANCE. ML 2.8 (STR).AZORES ISLANDS. Felt (IV) on Foiol ond (III) on Pico.LOYALTY ISLANDSX IZANGNORTHERN ITALY. ML 2.0 (GEN).NEAR EAST COAST OF HONSHU, JAPANGULF OF ALASKA. ML 3.0 (AEIC), 3.1SOUTHERN ALASKA. <AEIC>GREECE-ALBANIA BORDER REGION. MD(THE).

LOYALTY ISLANDS REGIONNORTHERN CHILENEAR COAST OF GUATEMALA.So Ivador.GREECE. ML 3.1 (THE). MD 3.1 (ATH).FIJI ISLANDS REGIONSOUTH SANDWICH ISLANDS REGIONHOKKAIDO, JAPAN REGIONGREECESOUTHERN XINJIANC-. CHINASPA IN. mbLg 2.5 (MDD).NORTH ISLAND, NEW ZEALANDMYANMARSOUTHERN ALASKA. <AEIC>. ML 2.7 (AEIC).SOUTHERN CALIFORNIA. <PAS-P>.FeIt (IV) at Mount Bo Idy.NORTHWESTERN BALKAN REGION. ML 2.1 (THE).AFGHANISTAN-TAJIKISTAN BORD REG.SANTA CRUZ ISLANDSCENTRAL ALASKA. <AEIC>. ML 2.6 (AEIC).BALI SEA. Mw 5.2 (HRV).GREECE. ML 2.5 (THE).SICILYTURKEY. MD 2.7 ( ISK).NORTHERN COLOMBIAIRAQ. Mw 5.4 (HRV). Felt in the Mosul area.MONA PASSAGESOUTHERN PERUGREECE. ML 2.1 (THE).KENAI PENINSULA, ALASKA. <AEIC>. ML 2.5 (AEIC).NEAR COAST OF CENTRAL CHILE. MD 4.0 (SAN).SAN JUAN PROVINCE, ARGENTINASOUTHERN PERUCENTRAL CALIFORNIA. <BRK>. MD 2.8 (GM). ML 2.7 (PAS),2.6 (BRK).AUSTRIA. ML 1.3 (VIE).

ML 2.3 (THE)

MD 4.2 (SAN)

(PGC).

3.1 (ATH). ML 2.8

Felt (II) at Son Salvador, El

ML 2.9 (PAS), 2.6 (GS).

PAGE 11 FEB 1993

17 13 22 40.5% 39.087 N 27.535 E 10 G 0.4 5 TURKEY. MD 2.7 (ISK).17 13 31 09.1 33.800 N 32.129 E 28 4.4 1.3 47 EASTERN MEDITERRANEAN SEA. ML 4.3 (CSS). MD 4.1 (RYD).17 13 45 47.1 40.084 N 20.747 E 10 G 1.4 17 GREECE-ALBANI A.BORDER REGION. MD 3.1 (ATM). ML 3.0

(THE).17 13 51 36.0? 38.73 N 23.50 E 10 G 0.3 6 GREECE17 14 46 53.8? 36.79 N 72.72 E 33 N 0.9 8 AFGHANISTAN-TAJIKISTAN BORD REG.17 14 54 03.5% 21.541 S 126.294 E 10 G 1.2 5 WESTERN AUSTRALIA17 14 58 44.2% 39.382 N 27.830 E 5 G 0.9 8 TURKEY. MD 2.9 (ISK).17 15 07 11.8* 13.628 N 144.590 E 142 4.5 1.1 16 MARIANA ISLANDS17 15 39 45.9? 21.45 S 66.80 W 202 ? 0.9 7 SOUTHERN BOLIVIA17 16 06 05.4 33.527 N 72.508 E 13 D 5.0 4.5 1.1 89 PAKISTAN. MD 5.0 (NDI). Felt in the

IsIamabod-RawaI pindi area.17 16 22 41.3? 48.82 N 9.90 E 10 G 1.4 7 GERMANY. ML 2.4 (VIE).17 16 30 00 4% 40 746 N 23.278 E 10 G 0.6 6 GREECE17 16 38 43 0 3 340 S 137.093 E 84 * 4.5 1.0 17 IRI AN JAYA, INDONESIA17 16 45 37. etc 60.539 N 140.604 W 16 15 SOUTHEASTERN ALASKA. <AEIC>. ML 2.6 (AElC), 2.8 (PGC).17 16 48 26.5? 32.25 S 70.48 W 110 G 0.3 9 CHILE-ARGENTINA BORDER REGION. MD 3.4 (SAN).17 17 02 07.5% 31.968 S 67.220 W 143 ? 0.3 8 SAN JUAN PROVINCE, ARGENTINA17 17 46 23.5 6.002 S 150.604 E 25 D 5.1 5.2 1.2 103 NEW BRITAIN REGION, P.N.G. Mw 5.6 (HRV).17 17 49 33.8% 45 070 N 7.156 E 10 G 0.5 6 NORTHERN ITALY. ML 2.0 (GEN).17 18 34 05.1? 37.36 N 9.33 W 10 G 1.0 18 PORTUGAL. mbLg 3.0 (MOD).17 18 56 54.2 43.423 N 5.448 E 10 G 0.7 16 NEAR SOUTH COAST OF FRANCE. ML 2.8 (STR).17 19 10 47.2& 34.944 N 116.778 W 3 8 SOUTHERN CALIFORNIA. <PAS-P>. ML 2.9 (PAS).17 19 41 13.5& 57.581 N 142.522 W 10 G 5 GULF OF ALASKA. <AEIC>. ML 2.6 (AEIC).17 20 05 16.7% 42.632 N 18.932 E 10 G 0.4 9 NORTHWESTERN BALKAN REGION. ML 1.6 (TTG).17 21 31 45.9 36.480 N 12.825 E 12 1.1 22 CENTRAL MEDITERRANEAN SEA17 21 31 49.7. 9.160 N 126.319 E 33 N 4.7 0.8 14 MINDANAO. PHILIPPINE ISLANDS17 21 52 07.2& 58.366 N 142.637 W 10 G 23 GULF OF ALASKA. <AEIC> ML 2.5 (AEIC).17 22 03 36.1% 37.806 N 14.982 E 10 G 0.6 5 SICILY17 22 48 33.3% 44.108 N 11.793 E 10 G 1.15 NORTHERN ITALY17 23 27 41.4* 26.258 N 92.805 E 28 4.2 1.7 8 NORTHEASTERN INDIA. ML 4.2 (NDI).17 23 37 25.2? 21.64 N 99.67 W 33 N 3.2 1.5 5 CENTRAL MEXICO18 00 16 11.9? 15.64 S 75.39 W 33 N 4.1 1.4 11 NEAR COAST OF PERU18 01 22 05.9* 15.580 S 75.284 W 33 N 4.3 4.7 1.3 14 NEAR COAST OF PERU18 01 47 03.1 33.664 N 136.719 E 389 4.6 1.0 54 NEAR S. COAST OF WESTERN HONSHU18 02 24 07.8? 68.10 N 13.77 E 10 G 1.4 5 NORTHERN NORWAY. MD 3.4 (BER).18 02 35 13.8 39.952 N 23.719 E 5 G 058 AEGEAN SEA. ML 2.2 (THE).18 02 56 57.4 37 502 N 137.733 E 33 N 4.5 1.5 18 NEAR WEST COAST OF HONSHU, JAPAN18 04 01 42.0? 32.74 S 70.87 W 67 ? e 3 9 CHILE-ARGENTINA BORDER REGION. MD 3.1 (SAN).18 04 15 02.9 37.699 N 57.828 E 33 D 4.6 1.0 27 TURKMEN ISTAN-1 RAN BORDER REGION ML 5.1 (TEH). Felt in

the Bojnurd oreo. Iron18 04 22 22.9ic 60 072 N 152.918 W 118 3.1 55 SOUTHERN ALASKA. <AEIC>.18 04 37 39.3* 1.022 S 127.567 E 29 D 4.8 0.7 17 HALMAHERA, INDONESIA18 05 30 16.2* 10 830 N 62.531 W 15 1.0 24 NEAR COAST OF VENEZUELA. MD 3.9 (TRN).18 06 32 35 2% 43.413 N 5.460 E 10 G 0.5 9 NEAR SOUTH COAST OF FRANCE. ML 2.6 (STR).18 06 48 12 5? 5 32 S 151.71 E 97 ? 4.6 1 5 7 NEW BRITAIN REGION, P.N.G.18 07 20 03.24 58 062 N 155.908 W 115 3.2 39 ALASKA PENINSULA. <AEIC>18 07 20 22.7 38.674 N 141.702 E 75 4.6 1.2 23 NEAR EAST COAST OF HONSHU, JAPAN18 08 12 55.9? 10.69 N 86.71 W 33 N 3.9 1.5 9 OFF COAST OF COSTA RICA. MD 4.3 (APY).18 08 43 52 3» 22.922 S 66.697 W 207 ? 0.9 8 JUJUY PROVINCE, ARGENTINA18 09 04 16.2 40.478 N 21.880 E 10 G 098 GREECE ML 2.0 (THE).18 09 43 14.7. 53.502 N 164.845 W 33 N 4.7 1.0 43 UN!MAK ISLAND REGION. ML 4.5 (PMR).18 10 04 31.4 53.547 N 164.262 W 33 N 4.7 1.2 62 UN IMAK ISLAND REGION. Felt (II) at Akutan.18 10 10 48.4 0.457 S 19.454 W 10 G 5.2 5.8 1.0 206 CENTRAL MID-ATLANTIC RIDGE. Mw 6.3 (HRV).18 11 14 15 4 53 513 N 164.513 W 33 N 4.5 0.9 34 UN IMAI- ISLAND REGION. ML 4.5 (PMR).18 11 23 40.7* 28.937 N 141.446 E 33 N 4.4 1.2 29 BONIN ISLANDS REGION18 11 54 34 7 15 039 N 91.682 W 22 D 4.7 1.0 46 MEXICO-GUATEMALA BORDER REGION18 12 14 43.6 36.714 N 74.075 E 28 D 5.0 4.5 0.9 99 NORTHWESTERN KASHMIR. ML 4.8 (BJI).18 12 19 25.6» 51.266 N 15.781 E 10 G 1.6 7 POLAND. ML 3.4 (VIE).18 12 42 53.7* 51.498 N 16.166 E 10 G 0.5 12 POLAND. ML 3.7 (GRF), 3 5 (VIE)18 12 54 45.0? 39.13 N 27.61 E 10 G 0.1 ~4 TURKEY. MD 2.6 (ISK).18 13 27 01.0* 50.054 N 29.039 W 10 G 4.4 3.9 08 17 NORTHERN MID-ATLANTIC RIDGE18 13 28 18.9 44.477 N 114.785 W 5 G 0.7 48 WESTERN IDAHO. ML 3.8 (GS), 4.0 (BUT). Felt (IV) at

Challis and (II) at Cloytan. Also felt at Stanley.18 13 35 31.9* 49.956 N 29.097 W 10 G 4.5 0.9 26 NORTHERN MID-ATLANTIC RIDGE18 14 28 50.8 44.401 N 114.654 W 5 G 0.6 10 WESTERN IDAHO. ML 2.9 (GS), 3.1 (BUT).18 15 39 50 9 34 830 S 70.175 W 10 G e 8 16 CHILE-ARGENTINA BORDER REGION. MD 4.2 (SAN).18 16 19 51 5 44.514 N 114.823 W 5 G 0.7 54 WESTERN IDAHO. ML 4.0 (GS), 4.1 (BUT). Felt (IV) at

Cloyton, (III) ot Chollis and (II) at Yellow Pine. Alsofelt ot Stanley.

18 16 38 03.2 48.337 N 154.803 E 37 D 4.7 4.2 0.8 45 KURIL ISLANDS18 16 45 32 3? 35.44 N 141.08 E 33 N 4.6 1.4 7 NEAR EAST COAST OF HONSHU, JAPAN18 17 06 16.9 52.208 N 152.551 E 428 4.5 0.8 111 NORTHWEST OF KURIL ISLANDS18 17 09 37.8? 7.31 S 133.38 E 33 N 4.5 1.1 10 ARU ISLANDS REGION, INDONESIA18 17 14 35.9 61.122 N 150.242 W 10 G 1.0 8 SOUTHERN ALASKA. ML 2.8 (PMR), 2.4 (AEIC). Felt (ll) at

Anchorage.18 17 23 36.2 53.462 N 164.495 W 33 N 4.4 0.7 28 UN IMAK ISLAND REGION. ML 4.4 (PMR).18 18 27 39.4 46.979 N 112.852 W 5 G 0.5 10 MONTANA. ML 3.0 (GS), 3.4 (BUT).18 18 28 17.2 38.247 N 22.869 E 10 G 1.0 13 GREECE. MD 3.0 (ATH). ML 2.7 (THE).18 18 48 18.7% 38.339 N 13.082 E 10 G 10 8 SICILY18 18 58 26.5? 38.09 S 175.53 E 276 ? 0.4 14 NORTH ISLAND, NEW ZEALAND18 19 35 36.8 52.998 S 72.687 E 10 G 5.5 4.9 1.3 115 KERGUELEN ISLANDS REGION. Mw 5.4 (HRV).18 20 12 49.1& 63.248 N 151.106 W 9 45 CENTRAL ALASKA. <AEIC>. ML 2.6 (AEIC).18 20 39 52.1% 44.393 N 7.329 E 10 G 0.1 5 NORTHERN ITALY. ML 1.7 (GEN).18 22 02 43.7% 34.028 S 70.134 W 10 G 0.3 11 CHILE-ARGENTINA BORDER REGION. MD 3.8 (SAN).18 22 24 15.2& 50.536 N 130.298 W 10 G 10 VANCOUVER ISLAND REGION. <PGC-P>. ML 3.3 (PGC).18 23 17 08.2% 40.225 S 174.123 E 133 * 0.4 22 COOK STRAIT, NEW ZEALAND18 23 26 57.4 44.775 N 140.921 E 243 4.3 0.9 56 EASTERN SEA OF JAPAN18 23 31 18.9? 31.44 S 67.92 W 10 G 134 SAN JUAN PROVINCE, ARGENTINA18 23 56 15.1? 22.14 S 68.59 W 33 N 167 NORTHERN CHILE19 00 43 16.6 27.813 S 74.097 E 10 G 5.1 4 8 0.9 43 MID-INDIAN RIDGE. Mw 5.2 (HRV).19 00 57 59.4 43.038 N 0.331 W 10 G 1.4 16 PYRENEES. ML 2.8 (LOG). mbLg 2.6 (MOD). Felt (III) in

the Beam area, France.

FEB 1993 PAGE 12

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GREECE. MD 3.1 (ATH).CATAMARCA PROVINCE, ARGENTINAGREECE. ML 3.1 (THE).HINDU KUSH REGION, AFGHANISTANTAIWAN. ML 4.3 (BJI).TURKEY. MD 2.7 (ISK).CENTRAL CALIFORNIA. <BRK>. ML 3.1 (BRK), 3.0 (GS). Felt(III) at Aromas. Also felt at San Juan Bautista and inthe SaIi nas area.KERGUELEN ISLANDS REGIONSOUTH OF HONSHU, JAPANPOLAND. ML 3.7 (GRF), 3.4 (VIE).AFGHANISTAN-TAJIKISTAN BORD REG.SOUTHERN ITALYNORTH ISLAND, NEW ZEALANDNORTHERN ITALY. ML 2.5 (LDG).NORTHWESTERN BALKAN REGION. ML 2.9 (THE).NORTH ISLAND, NEW ZEALANDNORTHWESTERN BALKAN REGION. ML 2.6 (TTG).SAMAR, PHILIPPINE ISLANDSMARIANA ISLANDS REGIONSOUTH OF FIJI ISLANDSKENAI PENINSULA, ALASKA. <AEIC>. ML 2.5 (AEIC).OFF COAST OF CENTRAL CHILE. MD 3.6 (SAN).TURKEY. MD 2.8 ( I SK) .GREECE. ML 2 9 (THE).TURKEY. MD 2.6 (ISK).SAN JUAN PROVINCE, ARGENTINACHILE-ARGENTINA BORDER REGION. MD 3.4 (SAN).SUMBA REGION, INDONESIAKURIL ISLANDSBULGARIATURKEY. MD 2.8 (ISK) .SOUTHEASTERN CHINA. ML 3.5 (BJI).TURKEY. MD 2.5 (ISK).HOKKAIDO, JAPAN REGIONNORTHERN SUMATERA. INDONESIAJAMAICA REGION. MD 3.2 (HOJ). Felt ot Moront Bay.NEAR COAST OF CENTRAL CHILE. MD 3.8 (SAN).NEAR SOUTH COAST OF FRANCETURKEY. MD 3.9 (ISK).OFF E. COAST OF N. ISLAND, N.Z.BANDA SEAAFGHANISTAN-TAJIKISTAN BORD REG.SOUTHEASTERN ALASKA. ML 2 8 (PGC), 2 6 (AEIC).SOUTHERN ALASKA. <AEIC>.CENTRAL ALASKA. <AEIC>. ML 2.2 (AEIC), 2.8 (PMR).SOUTHERN CALIFORNIA. <PAS-P>. ML 3.1 (PAS).TURKEY. MD 3.9 (ISK).NORTHWESTERN BALKAN REGION. ML 2.4 (TTG).EASTERN NEW GUINEA REG., P.N.G.DODECANESE ISLANDS. MD 3.3 (ISK).DODECANESE ISLANDS. MD 3.9 (ISK).SAN JUAN PROVINCE, ARGENTINANEAR COAST OF CENTRAL CHILE. MD 3 6 (SAN).GERMANY. MD 2.8 (UCC)MINDANAO. PHILIPPINE ISLANDSSOUTHERN CALIFORNIA. <PAS-P>. ML 2.6 (PAS).ZAIRETURKEY. MD 2.7 (ISK)SOLOMON ISLANDSKERGUELEN ISLANDS REGIONMENDOZA PROVINCE, ARGENTINANORTHWESTERN BALKAN REGION. MD 3.5 (TRI).SOUTHERN GREECE. MD 3.5 (ATH). ML 3.1 (THE).OFF COAST OF CENTRAL AMERICACHILE-BOLIVIA BORDER REGIONNORTH ISLAND, NEW ZEALANDKURIL ISLANDSCHILE-ARGENTINA BORDER REGION. MD 3.3 (SAN).TONGA ISLANDS REGION. Mw 5.5 (HRV).TONGA ISLANDSTURKEY. MD 2.8 ( ISK) .TURKEY. MD 2.8 (ISK).SOUTHERN ALASKA. <AEIC>. Felt (III) ot Skwentna.UNIMAK ISLAND REGION. Felt (Ml) at False Pass.KURIL ISLANDSAEGEAN SEA. ML 2.0 (THE) .REPUBLIC OF SOUTH AFRICA. mbLg 3.7 (BUL).GREECE. ML 1.5 (THE).TURKEY. MD 2.7 (ISK).GREECE. ML 1.7 (THE) .GERMANY. mbLg 3.4 (UCC). ML 3.3 (STR), 3.2 (VIE), 2.9(BNS).KURIL ISLANDSHOKKAIDO, JAPAN REGIONKURIL ISLANDSNORTHERN ITALY. ML 1.8 (GEN).EAST OF KURIL ISLANDSSAN JUAN PROVINCE, ARGENTINANEBRASKA. mbLg 3.5 (GS). Felt (IV) ot Merrimon.OFF E. COAST OF N. ISLAND, N.Z.MINDANAO, PHILIPPINE ISLANDS

PAGE 13 FEB 1993

20 14 31 03.9 41.010 N 33.348 E 10 G 0.8 10 TURKEY. MO 3.9 (ISK).20 14 49 17.2? 15.06 N 59.66 W 10 G 0.1 8 LEEWARD ISLANDS. ML 3.0 (PDF).20 15 07 02.2«c 38.104 N 119.081 W 13 13 CALIFORNIA-NEVADA BORDER REGION. <GM-P>. MO 3.1 (GM).

ML 3.1 (BRK).20 15 26 00.3? 33.06 S 179.10 W 77 ? 5.1 1.4 22 SOUTH OF KERMADEC ISLANDS20 15 37 39.5» 19.265 S 69.464 W 123 » 4.5 0.7 9 NORTHERN CHILE20 16 12 54.1* 6.931 N 73.138 W 172 » 3.7 1.2 9 NORTHERN COLOMBIA20 16 13 29.5? 40.99 N 28.80 E 10 G 1.2 4 TURKEY. MD 2.6 (ISK).28 16 22 05.7? 54.78 N 160.95 E 33 N 4.4 0.9 10 NEAR EAST COAST OF KAMCHATKA20 16 28 39.4% 38.930 N 29.695 E 5 G 1.2 8 TURKEY. MD 3.0 (ISK).20 17 33 31.9 32.380 N 90.110 E 28 D 4.6 4.2 1.3 41 XIZANG20 19 08 07.2% 38.944 N 27.822 E 10 G 0.6 7 TURKEY. MD 2.9 (ISK).20 20 32 19.6* 52.754 S 73.422 E 10 G 5.1 1.0 25 KERGUELEN ISLANDS REGION20 21 40 07.8% 42.383 N 19.160 E 10 G 0.9 6 NORTHWESTERN BALKAN REGION. ML 1.6 (TTG).20 21 45 55.9 42.159 N 125.717 W 10 G 0.5 36 OFF COAST OF OREGON20 22 28 03.2 36.736 N 71.356 E 33 N 4.3 0.8 10 AFGHANISTAN-TAJIKISTAN BORD REG.20 22 29 09.5* 39.587 N 25.283 E 10 G 1.4 9 AEGEAN SEA. ML 2.9 (THE).20 22 39 07.1? 47.99 N 147.33 E 424 ? 3.8 1.1 15 NORTHWEST OF KURIL ISLANDS20 23 18 55 2* 22.866 S 174.179 W 33 N 5.0 1.3 31 TONGA ISLANDS REGION20 23 32 17.6? 36.94 N 71.11 E 33 N 0.3 6 AFGHANISTAN-TAJIKISTAN BORD REG.20 23 51 31.2 46.189 N 14.008 E 10 G 1.1 34 NORTHWESTERN BALKAN REGION. MD 3.7 (LJU). 3.0 (TRI). ML

3.1 (VIE).21 00 46 20.0 45.789 N 15.211 E 10 G 0.9 9 NORTHWESTERN BALKAN REGION. MD 2.8 (LJU). 2.5 (TRI).21 01 35 25.3* 44.398 N 147.169 E 33 N 4.7 1.1 47 KURIL ISLANDS21 02 33 02.3? 45.64 N 27.50 E 10 G 1.1 4 ROMANIA21 02 55 52.6% 42.554 N 13.274 E 10 G 0.3 6 CENTRAL ITALY21 03 33 08.3«c 62.853 N 150.025 W 83 2.6 71 CENTRAL ALASKA. <AEIO».21 04 41 25.1* 9.670 N 126.457 E 33 N 4.6 1.1 16 MINDANAO, PHILIPPINE ISLANDS21 05 44 08.4* 21.285 S 68.929 W 160 ? 0.7 8 CHILE-BOLIVIA BORDER REGION21 06 23 52.1 31.128 S 67.840 W 10 G 0.9 10 SAN JUAN PROVINCE, ARGENTINA21 06 28 03.6% 39.106 N 29.367 E 10 G 1.2 7 TURKEY. MD 2.8 (ISK).21 06 32 31.6* 10.110 N 93.100 E 78 ? 4.8 1.1 11 ANDAMAN ISLANDS, INDIA21 06 38 49.7? 14.78 N 60.79 W 33 N 0.1 4 WINDWARD ISLANDS. ML 2.0 (FDF).21 07 13 20.1 6.726 S 127.636 E 368 D 5.3 0.9 192 BANDA SEA. Mw 5.7 (HRV).21 07 26 03.2? 22.66 S 66.14 W 270 ? 1.5 5 JUJUY PROVINCE, ARGENTINA21 07 36 45.6«c 60.120 N 151.661 W 54 44 KENAI PENINSULA, ALASKA <AEIC>. ML 2.8 (AEIC).21 08 23 05.1 30 805 S 71.856 W 7 4.0 0.9 26 NEAR COAST OF CENTRAL CHILE. MD 4.6 (SAN).21 08 36 56.0«£ 36.597 N 121.198 W 8 17 CENTRAL CALIFORNIA. <BRK>. ML 2.5 (BRK).21 08 39 25.3 20.221 S 133.730 E 5 G 4.6 1.1 24 NORTHERN TERRITORY, AUSTRALIA. Felt ot Tennont Creek.21 0B 46 36.0? 37.79 S 176.26 E 251 ? 0.2 13 NORTH ISLAND, NEW ZEALAND21 08 57 12.4& 34.168 N 116.429 W 8 8 SOUTHERN CALIFORNIA. <PAS-P>. ML 3.1 (PAS).21 09 30 19.5? 50.47 N 6.80 E 10 G 0.4 4 GERMANY21 09 37 54.6 58.300 N 120.617 E 33 N 4.3 1.1 14 SOUTHEASTERN SIBERIA. RUSSIA21 09 41 21.9? 39.07 N 27.55 E 10 G 1.4 4 TURKEY. MD 2 6 (ISK).21 09 55 37.6% 39.062 N 27.669 E 10 G 0.7 6 TURKEY. MD 2 9 (ISK)21 10 18 58.4* 29.159 S 67.586 W 130 ? 0.3 6 LA RIOJA PROVINCE, ARGENTINA21 10 20 04.1? 32.10 S 179.72 E 436 ? 4.2 1.1 23 SOUTH OF KERMADEC ISLANDS21 11 22 45.1 36.652 N 8.716 W 33 N 0.7 32 WEST OF GIBRALTAR. MD 3 6 (RBA). mbLg 3.5 (MOD).21 11 38 13.3 36.672 N 8.780 W 33 N 0.8 29 WEST OF GIBRALTAR. mbLg 3.8 (MOD). MD 3.7 (RBA).21 12 01 45.8? 44.40 N 7.34 E 5 G 0.0 4 NORTHERN ITALY. ML 1.6 (GEN).21 12 10 52.0«c 60.131 N 153.299 W 130 44 SOUTHERN ALASKA <AEIC>.21 12 11 31.5? 30.82 S 72.03 W 23 0.9 15 OFF COAST OF CENTRAL CHILE. MD 4.2 (SAN).21 12 13 00.4 45.413 N 5.088 E 9 1.2 39 FRANCE. ML 3.5 (LOG), 2.9 (STR).21 12 35 34.9» 36.671 N 8.693 W 10 G 0.9 12 WEST OF GIBRALTAR. MD 2.9 (RBA). mbLg 2.9 (MOD).21 13 12 34.6% 15.397 N 61.073 W 90 G 6.7 8 LEEWARD ISLANDS21 13 24 40.1? 39.63 N 21.86 E 10 G 0.4 4 GREECE21 13 30 28.7? 37.69 N 28.46 E 10 G 0.5 4 TURKEY21 13 35 45.4% 39.207 N 9.391 W 10 G 1.0 14 PORTUGAL. mbLg 3.1 (MOD).21 13 46 56.4% 39.017 N 27.628 E 10 G 1.1 5 TURKEY. MD 2.8 (ISK).21 13 47 24.3% 18.392 N 67.377 W 13 0.4 7 MONA PASSAGE21 13 56 04.9» 49.934 N 7.085 E 10 G 0.9 7 GERMANY. ML 2.7 (LDG).21 14 34 48.8 49.776 N 7.195 E 10 G 1 5 16 GERMANY. ML 2.9 (LDG), 2.5 (BNS).21 16 07 54.2«£ 45.655 N 113.592 W 31 7 MONTANA. <BUT>. ML 3.2 (BUT).21 16 37 49.9? 35.29 S 71.30 W 110 G 0.4 8 CENTRAL CHILE21 17 00 12.0* 53.367 N 107.872 E 10 G 4.0 0.3 6 LAKE BAYKAL REGION. RUSSIA21 17 25 03.8* 12.713 N 89.284 W 33 N 4.4 1.2 22 OFF COAST OF CENTRAL AMERICA21 18 03 48.17. 38 766 N 24.309 E 10 G 0.5 1P AEGEAN SEA. ML 3.0 (THE).21 18 16 65.87. 40.695 N 22.754 E 10 G 0.6 7 GREECE. ML 1.8 (THE).21 18 21 58.1? 14.78 N 60.72 W 33 N 0.2 4 WINDWARD ISLANDS. ML 2.6 (FDF).21 18 48 13.8? 34.59 N 25.42 E 106 ? 3.6 0.4 7 CRETE21 18 58 17.5 2.447 N 128.339 E 160 D 5.2 0.9 146 HALMAHERA. INDONESIA21 19 29 06.1 47.853 N 7.430 E 10 G 0.4 11 SWITZERLAND. ML 2.3 (LDG), 1.7 (STR).21 19 36 03.5 43.074 N 0.603 W 10 G 0.2 11 PYRENEES. ML 2.3 (LDG).21 20 31 05.9* 38.309 N 29.070 W 10 G 4.5 0.8 15 AZORES ISLANDS. Felt (IV) ot Proio do Norte ond

Feteiro; (III) ot Costela Bronco, Flomengos, Soloo, Cedras and Horta an Faial. Felt (III) at Madelena, Candelaria, Saa Mateus, Saa Caetana, Bandeiras, Santa Luzio, Santo Antonio, Sao Roque da Pica, Proinho ond Sonto Amoro an Pica. Felt (II) at Rosos, Santo Antao, Velos ond Colheto on Soo Jorge.

21 20 56 44.1 28.999 N 52.114 E 33 N 4.6 1.2 37 SOUTHERN IRAN. MD 4.4 (RYD).21 21 58 51.5% 18.521 N 67.191 W 33 N 0.6 6 MONA PASSAGE21 22 47 16.1 53.925 N 163.724 W 33 N 4.9 0.8 53 UN IMAK ISLAND REGION. ML 4.5 (PMR).21 23 32 12.5& 56.445 N 155.510 W 120 22 ALASKA PENINSULA. <AEIC>.21 23 36 15.9 18.027 S 174.308 W 88 D 5.0 0.9 42 TONGA ISLANDS21 23 39 22.6* 53.206 S 72.725 E 10 G 5.1 0.9 12 KERGUELEN ISLANDS REGION22 00 08 55.0 47.191 N 154.125 E 33 D 5.4 5.4 0.9 309 KURIL ISLANDS. Mw 5.7 (HRV).22 00 24 45.9? 47.33 N 154.14 E 33 N 4.5 0.2 8 KURIL ISLANDS22 00 26 52.6 47.167 N 154.041 E 33 N 4.9 1.0 78 KURIL ISLANDS22 01 01 46.5? 32.44 S 71.89 W 10 G 0.5 9 NEAR COAST OF CENTRAL CHILE. MD 3.8 (SAN).22 01 36 14.6? 23.40 S 179.00 W 357 ? 3.8 0.8 16 SOUTH OF FIJI ISLANDS22 01 46 43.8 47.542 N 153.660 E 33 N 4.7 0.8 44 KURIL ISLANDS22 02 07 55.0? 41.65 N 23.72 E 10 G 0.2 6 GREECE-BULGARIA BORDER REGION. ML 2.7 (THE).

FEB 1993 PAGE 14

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PAGE 15 FEB 1993

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LB 1993

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16

307

8147715

18

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11970

57

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17

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7116294

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CHILE-ARGENTINA BORDER REGION. Mw 5.7 (GS), 5.7 (HRV).mb 5.9 (BRK). Depth from broodbond displacementse i smogroms.NORTHWESTERN BALKAN REGION. ML 1.6 (TTG).MINDANAO, PHILIPPINE ISLANDSCENTRAL ALASKA. <AEIC>. Felt (III) ot Skwentno.WYOMING. ML 3.6 (GS). Felt at Wright. Probable stripmi ne blast.NEAR COAST OF NORTHERN CALIF. <BRK>. ML 4.0 (BRK). Felt(II) ot Rio Dell. Also felt ot Fortune.CENTRAL ALASKA. <AEIC>. ML 2.7 (AEIC). 3.1 (PMR).SAN JUAN PROVINCE. ARGENTINASAN JUAN PROVINCE. ARGENTINABULGARIATURKEY. MD 2.9 (ISK).ALBANIA. ML 2.0 (TTG).NEAR SOUTH COAST OF FRANCE.NEAR SOUTH COAST OF FRANCE.MENDOZA PROVINCE. ARGENTINA. MD 4.3 (SAN).WYOMING. ML 3 5 (GS). ML 3.9 (BUT).NEAR COAST OF CENTRAL CHILE. MD 4.3 (SAN). Felt (II) otLo Ligua and Petorca.FRANCE. ML 2.2 (LOG).NORTHWESTERN BALKAN REGION. ML 2.7 (TTG).SAN JUAN PROVINCE. ARGENTINANEAR WEST COAST OF COLOMBIAFRANCE. ML 2.3 (LOG).FRANCE. ML 2.0 (GEN).SOUTH OF FIJI ISLANDS. Mw 5.7 (HRV).CENTRAL ALASKA. <AEIC>. ML 4.3 (AEIC). 4.3 (PMR). Felt(III) at Lake Mi nchum i no.SOUTHERN ITALYAEGEAN SEA. ML 2.3 (THE).NEAR EAST COAST OF HONSHU, JAPAN. Mw 5.7 (HRV).NEAR COAST OF CENTRAL CHILE. MD 3.2 (SAN).CENTRAL MID-ATLANTIC RIDGEUTAH. <SLC-P>. MD 3.1 (SLC).SOUTH SANDWICH ISLANDS REGIONEAST OF KUR I L ISLANDSALASKA PENINSULA. ML 4.7 (PMR)CENTRAL ALASKA. <AEIC>SAN JUAN PROVINCE, ARGENTINA MD 4.0 (SAN).CHILE-ARGENTINA BORDER REGION MD 3.7 (SAN).KURIL ISLANDSALASKA PENINSULANORTHWESTERN BALKAN REGION. ML 2.1 (TTG).GREECE-ALBANIA BORDER REGION. MD 3.1 (ATH). ML 2.8(THE).FRANCE. ML 2.0 (LOG).GREECE. ML 1.6 (THE).CRETESOUTHERN ALASKA. <AElC>.NORTHERN ITALYANDREANOF ISLANDS, ALEUTIAN IS.SOUTH ISLAND, NEW ZEALANDNEAR EAST COAST OF KAMCHATKAGERMANY. ML 2 3 (BNS). Probable rockburst.TURKEY. MG 3.8 (DDA). Felt ot Molotyo.SOUTHERN CALIFORNIA. <PAS-P>. ML 3.0 (PAS).LUZON, PHILIPPINE ISLANDSNEAR SOUTH COAST OF FRANCE. ML 2.2 (GEN), 1.9 (LOG).TONGA ISLANDSSOUTHERN ITALYCENTRA_L ITALYTURKEY". MD 2.7 ( ISK) .TURKEYSWITZERLAND ML 2 5 (VIE). 2.3 (FUR).PAK i STANIONIAN SEA. MD 3.3 (ATH). ML 3.2 (THE).NEAR SOUTH COAST OF FRANCE. ML 2.6 (STR).KODIAK ISLAND REGION. <AEIC>. ML 4.0 (AEIC), 4.0 (PMR).FLORES REGION, INDONESIAGREECE. ML 2.3 (THE).KURIL ISLANDSOFF COAST OF CENTRAL CHILE. MD 3.7 (SAN).GERMANY. ML 2.2 (BNS). Probable rockburst.NORTHERN MID-ATLANTIC RIDGEOFF COAST OF CENTRAL CHILE. MD 3.7 (SAN).BULGARIA. ML 2.7 (THE).SOUTH OF FIJI ISLANDSSOUTHERN ALASKA. <AEIC>.AEGEAN SEATURKEY. MD 3.5 (ISK).REPUBLIC OF SOUTH AFRICA. mbLg 3.6 (BUL).SOUTHERN XINJIANG. CHINA. ML 4.2 (BJI).LEEWARD ISLANDS. ML 3.0 (FDF).SOUTHERN SUMATERA. INDONESIAWESTERN CAROLINE ISLANDSCRETE. MD 3.7 (ATH).SICILYNORTHERN ITALY. ML 1.4 (GEN).KURIL ISLANDSCENTRAL ALASKA. <AEIC>. ML 2.7 (AEIC), 3.2 (PMR).

PAGE 17 FEB 1993

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NORTHERN ITALY. ML 2.3 (LOG). 2.0 (GEN). NORTHWESTERN BALKAN REGION. ML 1.9 (TTG). S I C I LYNEW JERSEY. mbLg 2.5 (GS). Felt (IV) ot Borrington. Cherry Hill, Hodden Heights, Hoinesport, Lownside, Moorestown, Palmyra and Runnemede; (III) at Blackwoad, Camden, Delran, Gibbsbaro, Lumberton, Magnolia, Marltan, Mt. Laurel, Rancocas, Westville and Woodbury;(II) at Cinnaminsan, Clement on and SeweI I. Felt (III)at Media, Pennsylvania and (II) at Darby, Pennsylvania.Also felt in the Philadelphia, Pennsylvania area.NORTHWESTERN BALKAN REGION. ML 2.9 (TTG).BAJA CALIFORNIA, MEXICO. ML 3.6 (GS).NEW GUINEA. PAPUA NEW GUINEA. Mw 5.3 (HRV).SOUTH OF PANAMAKENAI PENINSULA, ALASKA. <AEIC>. ML 2.9 (AEIC).TURKEY. MD 2.6 (ISK).CENTRAL CALIFORNIA. <PAS-P>. ML 2.9 (PAS).WASHINGTON. ML 3.1 (GS). 3.0 (PGC).NEAR COAST OF CENTRAL CHILE. MD 3.1 (SAN).GERMANY. ML 2.5 (STR).SOUTHERN ALASKA. <AEIC>.CALIFORNIA-NEVADA BORDER REGION. <GM-P>. MD 3.0 (GM) .S. CHILE-ARGENTINA BORDER REGIONTURKEY. MD 2.7 (ISK).NORTHERN CALIFORNIA. <BRK>. ML 3.0 (BRK).KERMADEC ISLANDS REGIONNORTHERN ITALY. ML 1.8 (GEN).NORTH ISLAND, NEW ZEALANDSOUTHERN ITALYMENDOZA PROVINCE, ARGENTINA. MD 4.0 (SAN).GREECE. ML 2^3 (THE).TURKEY. MD 3.0 (ISK).TANIMBAR ISLANDS REG.,SOUTHERN GREECE. ML 3.2 (ATH). 3.2 (THE).EAST OF KURIL ISLANDSTURKEY. MD 3.0 (ISK).OFF COAST OF COSTA RICA. MD 3.9 (APY).LAKE BAYKAL REGION, RUSSIA. Felt (IV) ot Tyrgana and(III) at Irkutsk, Krosnyy Yar, Shergino, Kobansk andUlan-Ude.CENTRAL MID-ATLANTIC RIDGENORTHERN ALASKA. <AEIC>. ML 2.8 (AEIC).NEAR COAST OF NORTHERN CHILE.An tofogos ta.MONA PASSAGEPORTUGAL. mbLg 2.8 (MOD).NORTHERN ITALYCHILE-ARGENTINA BORDER REGION.SALTA PROVINCE, ARGENTINASOUTH OF HONSHU, JAPANALASKA PENINSULA. <AEIC>.KURIL ISLANDS. Mw 5.5 (HRV).SERAM, INDONESIAGREECE. ML 2.7 (THE)KURIL ISLANDSCENTRAL ALASKA. <AEIC>.OFF COAST OF CENTRAL CHILE. MD 3.6 (SAN).EASTERN NEW GUINEA REG., P.N.G.SOUTHERN CALIFORNIA. <PAS-P>. ML 2.7 (PAS).WESTERN AUSTRALIALA RIOJA PROVINCE, ARGENTINACHILE-BOLIVIA BORDER REGIONWINDWARD ISLANDS. MD 3.3 (TRN).MINDANAO, PHILIPPINE ISLANDS. Mw 5.3 (HRV).GULF OF CALIFORM I AOFF COAST OF CENTRAL CHILE. MDSOUTH OF KERMADEC ISLANDSAEGEAN SEA. ML 3.4 (THE). MD 3.4AEGEAN SEA. MD 3.3 (ISK). ML 3.3 (THE).TURKEY. MD 3.4 (ISK).NORTHWEST OF KURIL ISLANDSNEAR COAST OF NORTHERN CALIF.KODIAK ISLAND REGION. <AEIC>.AFGHANISTAN-TAJIKISTAN BORD REG.NORTHWESTERN BALKAN REGION. ML 2.2 (TTG).ALBANIA. ML 2.7 (TTG).LA RIOJA PROVINCE, ARGENTINAGULF OF ALASKA. <AEIC>. ML 2.5 (AEIC). 2.6 (PGC).SAN JUAN PROVINCE, ARGENTINATURKEY. MD 2.7 (ISK).TURKEY. MD 2.7 (ISK).COOK STRAIT, NEW ZEALAND. ML 3.8 (WEL).NORTHERN CALIFORNIA. <GM-P>. MD 2.9 (GM) .CENTRAL ITALYSOUTHERN ALASKA. <AEIC>. ML 2.5 (AEIC).TURKEY. MD 2.7 (ISK).SAN JUAN PROVINCE, ARGENTINAKENAI PENINSULA, ALASKA. <AEIC>. ML 2.8 (AEIC).VOLCANO ISLANDS REGIONNORTHERN ITALY. ML 2.2 (GEN).SOUTHERN EAST PACIFIC RISE. Mw 5.3 (HRV).NORTH ISLAND, NEW ZEALAND

Felt (III) at

MD 3.2 (SAN).

3.7 (SAN)

(ISK).

<BRK>. ML 3.2 (BRK).

FEB 1993 PAGE 18

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<GM-P>. MD 3.1 (CM). Felt (IV) at

1 (THE).


82 17 14 34.14 29.586S 176.792W 33km 5.1mb ( 28 obs.) 4.9Msz ( 3 obs.) KERMADEC ISLANDS REGION CENTROID, MOMENT TENSOR (HRV) Data Used: GDSN L.P.B.: 28S. 44C Cent ro i d Locot i on: OriginTime 17:14:41.48.6 Lot 28.825 0.87 Lon 176.98W 0.85 Dep 31.7 3.4 Ha If-durotion 1.1 Pr i nc i pa I Axes:

Scale 10»*16 Mm T VoI- 11.39 Pig-62 Azm-303 N 1.42 7 199 P -12 82 27 105

Best Double Coup Ie.Mo-1.2»10*»17 NP1:Strike-177 Dip-19 Slip- 67 NP2: 22 72 98

02 18 17 47 35 29 726S 176.870W 43km 5.3mb ( 30 obs.) 5 4Msz ( 32 obs.) KERMADEC ISLANDS REGION CENTROID. MOMENT TENSOR (HRV) Data Used: GOSN L.P.B. : 40S, 84C Cent ro i d Locali on:Origin Time 18 17:51.5 8.4Lot 29.11S 0.65 Lon 176.78W 8.04Dep 18.5 1.9 Half-durotion 1.7P r i nc i po I Axes :

Scole 10»*17 NmT Vol- 3.11 Pig-64 A2m-288N 8.17 1 196P -3.28 26 186

Best Double Coup Ie:Mo-3.2*18*»17NP1:Strike-194 Dip-19 Slip- 88NP2: 16 71 91

03 83 24 28.42 18.785N 145.391E 245km5.8mb ( 81 obs.)MARIANA ISLANDSCENTROID, MOMENT TENSOR (HRV)Doto Used: GDSNL.P.B.: 38S, 73CCent ro i d Locot i on:Origin Time 03:24:32.9 8.3Lot 19 04N 8.03 Lon 145.52E 8.01Dep 214.9 1.1 Ho I f-durotion 1 6Pr i nc i pa I A »es.

Scole ie»*1~ Nm T Vol- 4.55 Pig-48 Azm-161 N -8.28 48 323 P -4.27 9 61

Best Double Coup Ie:Mo-4.4*1C** 17 NP1:Strike-188 Dip-50 Slip- 147 NP2: 300 65 45

83 04 36 86.52 41.841S 88.058E 18km4.9mb ( 18 obs.) 5.3Msz ( 7 obs.)SOUTHEAST INDIAN RIDGECENTROID, MOMENT TENSOR (HRV)Data Used: GDSNL.P.B. : 29S. 46CCentroid Location:Origin Time 04:36:14.9 0.4Lot 41.98S 8.05 Lon 87.92E 8.88Dep 15.0 FIX Half-durotion 1.3Pr i nc i pa I Axes:

Scole 18**17 Nm T Vol- 1.78 Pig-28 Azm- 4 N -0.52 69 281 P -1.26 5 96

Best Double Couple:Mo-1.5*18**17 NP1:Strike-142 Dip-72 Slip- 11 NP2: 48 88 162

03 15 20 18.02 6.885N 125.915E 145km5.3mb ( 73 obs. )MINDANAO, PHILIPPINE ISLANDSCENTROID, MOMENT TENSOR (HRV)Data Used: GDSNL.P.B.: 20S. 29CCent roi d Locot i on:Or igi n T ime 15:20:17.4 0.7Lot 6.07N FlX;Lon 125.92E FIXDep 133.2 3.5 Ho If-durotion 1.8Pr i nc i poI Axes:

Scale 10**16 Nm T Val- 7.81 Pig- 8 Azm-354 N 1.66 60 250 P -9.47 29 88

Best Double Coup Ie:Mo-8.6*10»»16 NP1:Strike-127 Dip-64 Slip- -16 NP2: 224 76 -153

03 16 51 46.38 13.619N 123.872E 18km 5.4mb ( 77 obs.) 5.3Msz ( 35 obs.) LUZON, PHILIPPINE ISLANDS CENTROID, MOMENT TENSOR (HRV) Doto Used: GDSN L.P.B. : 21S, 39C Cent ro i d Locot i on: Origin Time 16:51:49.7 6.4 Lot 13.89N 8.04 Lon 123.40E 0 05 Dep 26.2 3.3 Half-duration 1.6 Pr i nc i poI Axes:

Scole 16**17 NmT Vol- 3.40 Pig- 5 Aim-346N -8.83 78 88P -2.58 28 254

Best Double Couple:Mo-3 0*10**17NP1:Strike- 31 Dip-73 Slip 169NP2: 298 79 -18

84 16 28 32.36 12.495N 141.923E 27km 5.7mb ( 73 obs.) 5.2Msz ( 30 obs.) SOUTH OF MARIANA ISLANDS CENTROID, MOMENT TENSOR (HRV) Data Used: GDSN L.P.B.: 40S, 76C Centroid Location: Or igin Time 16:28:33.5 8.4 Lot 12.47N 8.03 Lon 142.04E 0.04 Dep 15.8 BOY Ha If-durotion 1.5 Pr i ncipoI Axes:

Scole 10**17 Nm T Vol- 2.16 Pig- 7 Azm-344 N -8.01 18 252 P -2.15 70 95


84 18 04 28.81 1.286S 24.277W 18km 5.0mb ( 22 obs.) 5.0Msz ( 17 obs.) CENTRAL MID-ATLANTIC RIDGE CENTROID, MOMENT TENSOR (HRV) Data Used: GDSN L.P.B.: 38S, 62C Centroid Location: Origin Time 18:84:33 9 8.4 Lot 1.84S 8.04 Lon 24.52W 8.84 Dep 15.8 FIX Half-duration 1.3 Pr i nc i poI Axes:



05 06 37 23.74 12.542N 141.985E 58km5.2mb ( 39 obs.)SOUTH OF MARIANA ISLANDSCENTROID. MOMENT TENSOR (HRV)Data Used: GDSNL.P.B.: 30S, 44CCent ro i d Locot i an:Origin Time 06:37:22.8 0.5Lot 12.43N 8.04 Lon 142.80E 0.04Dep 15.8 FIX Half-duration 1.1Pr i nc i pa I Axes:

Scale 10*»17 Nm T Val- 1.72 Pig-20 Azm-352 N 0.81 6 260 P -1.73 69 155

Best Double Coup Ie:Mo-1.7*10*»17 NP1:Strike- 93 Dip-25 Slip- -76 NP2: 258 65 -96

05 07 15 21.14 12.573N 141.882E 28km 5.7mb ( 73 obs.) 5.7Msz ( 38 obs.) SOUTH OF MARIANA ISLANDS CENTROID, MOMENT TENSOR (HRV) Data Used: GDSN L.P.B.: 41S, 86C Cent ro i d Locot i on: Origin Time 87:15:24.1 8.2 Lot 12.51N 0.02 Lon 141.88E 8.02 Dep 15.0 FIX Half-duration 2.2 P r i nc i poI Axes:

Scale 18»*17 Nm T Val- 7.87 Pig- 8 Azm-351 N -8.17 11 260 P -6.89 77 118

Best Double Coup Ie.Mo-7.8*18*»17 NP1:Strike- 94 Dip-38 Slip- -73 NP2 252 54 -183

86 12 42 51.66 56.522S 25.765W 33km 5.3mb ( 15 obs.) 5.5Msz ( 33 obs.) SOUTH SANDWICH ISLANDS REGION CENTROID, MOMENT TENSOR (HRV) Doto Used: GDSN L.P.B.: 42S, 87C Cent raid Locot i on. Origin Time 12:42:59.9 0.2 Lot 56.44S 0.83 Lon 25.38W 0.04 Dep 15.7 1.6 Half-durotion 1.7 Principal Axes:

Sco I e 10**17 NmT Vol- 4.50 Pig-64 Azm-250N 8.28 0 159P -4.77 26 69

Best Double Coup Ie:Mo-4.6*10*»17NP1:Strike-158 Dip-19 Slip- 89NP2: 339 71 90

07 05 02 46.43 29.166S 176.921W 21km 5.3mb ( 13 obs.) 5.1Msz ( 11 obs.) KERMADEC ISLANDS REGION CENTROID, MOMENT TENSOR (HRV) Doto Used: GDSN L.P.B.: 34S. 60C Centroid Location: Origin Time 05:02:52.9 0.5 Lot 28.75S 8.87 Lon 176.66W 0.05 Dep 19.5 3.1 Half-duration 1.2 Pr i nc i poI Axes:

Scole 18**17 Nm T Vol- 1.32 Pig-63 Azm-288 N 8.18 1 196 P -1.42 27 106


PAGE 19 FEB 1993

07 11 08 19.39 44.378N 147.593E 108km5.3mb (184 obs. )KURIL ISLANDSCENTROID, MOMENT TENSOR (HRV)Doto Used: GDSNL.P.B.: 9S. 10CCent ro i d Locali an:Or igin Time 11:08:18.7 1.2Lat 44.40N 0.13 Lan 148.44E 0.20Dep 95.2 7.7 Half-duration 1.0P r i nc i pa I Axes:

Scale 10**16 NmT Vol- 3.97 Pig-47 Arm- 20 N 0.08 29 253 P -4.05 28 146


07 13 27 42.01 37.634N 137 245E 11km 6.3mb (176 abs.) 6.2Msz ( 27 obs.) NEAR WEST COAST OF HONSHU, JAPAN FAULT PLANE SOLUTION: P-Woves NPl:Strike- 10 Dip-50 Slip- 75 NP2: 213 42 107

Pr i nc i pa I Axes:T Pig-78 Azm-219 P 4111

Comment: The focal mechanism is poorly controlled and corresponds to reverse faulting with o small strike- slip component. The preferred fault plane is not determined.

RADIATED ENERGYNo. of sto: 24 Focol mech. F Energy 7 . 8±1.4»10« 13 Nm

MOMENT TENSOR SOLUTION Dep 6 No o f s to: 31 Pr i nc i poI Axes:

Scole 10«*18 NmT Vol- 8.61 Pig-70 Azm-272N -0 59 8 160P -8.02 18 67

Best Double Couple.Mo-8 3«10*»18NP1:Strike-145 Dip-28 Slip- 73NP2: 344 64 99

CENTROID, MOMENT TENSOR (HRV)Date Used: GDSNL.P.B.: 37S, 99C M.W.. 28S. 54C Cent ro i d Locot i on: Origin Time 13'27:49.4 0.1 Lat 37.74N 0.01 Lon 137.21E 0.01 Dep 15.0 BDY Ho I f-durotion 3.7 P r i nc i poI Axes:

Scale 10»»18 NmT Vol- 3.48 Pig-89 Azm-242N -0.14 1 30P -3.34 1 120

Best Double Coup Ie:Mo-3.4»10** 18NP1 :Strike-211 Dip-44 Slip- 91NP2: 29 46 89

08 04 24 47.20 4.834S 101.916E 30km 5.9mb ( 92 obs.) 5.6Msz ( 46 abs.) SOUTHERN SUMATERA, INDONESIA CENTROID, MOMENT TENSOR (HRV) Doto Used GDSN L.P B.: 42S. 90C Centroid Location:Origin Time 04:24:51.3 0.3 Lat 5.24S 0.03 Lon 101.91E 0.04 Dep 24.3 2.4 Half-duration 1.B Princ i pa I Axes.

Scole 10»*17 NmT Val- 4.01 Pig-59 Azm- 14N 0.77 5 113P -4.77 31 206

Best Double Couple:Ma-4.4*10**17NPl:Strike-313 Dip-15 Slip- 111NP2: 112 76 84

09 12 04 49.25 0.696N 29.666W 10km 5.2mb ( 30 obs.) 4.8MSZ ( 7 obs.) CENTRAL MID-ATLANTIC RIDGE CENTROID, MOMENT TENSOR (HRV) Data Used: GDSN L.P.B.: 34S, 56C Cen t ro id Locot i on:Origin Time 12:04:57.2 0.3 Lat 0.63N 0.04 Lon 29.68W 0.03 Dep 15.0 FIX Half-duration 1.9 Pr i nc i pa I Axes:

Scole 10**17 NmT Val- 1.73 Pig-16 Azm- 46N 0.16 74 231P -1.89 1 136

Best Double Coup Ie:Ma-1.8»10»*17NP1:Strike-182 Dip-78 Slip- 10NP2: 90 80 168

09 14 25 38.90 45.709N 141.938E 307km5.6mb (170 abs.)HOKKAIDO, JAPAN REGIONCENTROID, MOMENT TENSOR (HRV)Data Used: GDSNL.P.B.: 32S, 68CCent raid Locot i on:Origin Time 14:25:42.5 0.3Lat 45.66N 0.03 Lon 141.94E 0.03Dep 314.4 1.7 Half-duration 1.4Pr i nc i poI Axes:

Scale 10**17 Nm T Vol- 2.81 Pig-37 Azm- 23 N 0.10 32 141 P -2.91 37 258

Best Double Couple:Mo-2.9»10**17 NP1:Strike- 50 Dip-32 Slip- 179 NP2 141 90 58

10 00 16 32.33 19.428S 169.181E 10km5 2mb ( 25 obs.) 4.7Msz ( 3 obs.)VANUATU ISLANDSCENTROID. MOMENT TENSOR (HRV)Data Used: GDSNL.P.B.: 29S, 47CCentroid Location:Origin Time 00:16:34.4 0.8Lot 19.46S 0.09 Lan 169 63E 0.06Dep 26.4 6.7 Ho I f-durotion 1.0Principal Axes:

Scole 10**16 Nm T Val- 9.34 Pig-20 Azm- 41 N -2.57 66 185 P -6.77 13 306

Best Double Coup Ie:Mo-8.1»10** 16 NP1:Strike- 82 Dip-66 Slip- 175 NP2: 174 85 24

10 10 53 07.20 7.745S 105.262E 33km 5.7mb ( 88 obs.) 5.2Msz ( 37 obs.) JAWA, INDONESIACENTROID, MOMENT TENSOR (HRV) Data Used: GDSN L.P.B.: 42S, 99C Cent ro i d Locot i on:Origin Time 10:53:14.3 0.2 Lat 7.92S 0.02 Lon 105.12E e.02 Dep 68.2 1.6 Half-duration 2.0 P r i nc i pa I Axes:

Scole 10**17 NmT Val- 6.00 Pig-22 Azm- 39N -1.43 65 187P -4.57 12 304

Best Double Coup Ie:Mo-5.3«10** 17NP1: Strike- 80 Dip-66 Slip- 173NP2: 173 83 24

12 10 52 03.89 79.218N 124.503E 10km 5 emb ( 66 obs.) 4.3Msz ( 16 obs.) EAST OF SEVERNAYA ZEMLYA, RUSSIA CENTROID, MOMENT TENSOR (HRV) Data Used: GDSN L.P.B.: 26S, 38C Centroid Location:Origin Time 10:52: 8.4 0.4 Lat 78.85N 0.08 Lon 125.97E 0.49 Dep 15.0 FIX Ho If-durotion 1.0 Pr i nc i poI Axes:

Scale 10**16 NmT Vol- 3.76 Pig- 9 Azm-262N 1.90 25 356P -5.66 63 153

Best Double Coup Ie:Mo-4.7*10»»16NP1 .-Strike-324 Dip-42 Slip 130NP2: 193 59 -60

12 11 33 00.36 17 580S 172 627W 31km 4.9mb ( 16 obs.) 5.1Msz ( 27 obs.) TONGA ISLANDS REGION CENTROID, MOMENT TENSOR (HRV) Data Used: GDSN L.P.B.: 26S. 38C Centroid Location:Origin Time 11-33: 3.00.9 Lat 17.97S 0.11 Lon 172.51W 0.08

Dep 15.0 FIX Ho If-durotion 1.1 Pr i nc i poI Axes:

Scole 10**16 Nm T Vol- 9.31 Pig-60 Azm-283 N -1.68 7 26 P -8.23 29 120

Best Double Cauple:Mo-8.8»10*»16 NP1:Strike-230 Dip-17 Slip- 115 NP2: 24 74 82

13 00 43 00.50 6.658N 126.860E 22km 5.1mb ( 37 obs.) 4.8Msz ( 17 obs.) MINDANAO, PHILIPPINE ISLANDS CENTROID, MOMENT TENSOR (HRV) Data Used: GDSN L.P.B.: 32S, 44C Centroid Location: Origin Time 00:43: 8.5 0.5 Lot 6.57N 0.07 Lon 127.38E 0.07 Dep 24.8 2.9 Ho If-durotian 1.1 Pr i nc i pa I Axes:

Scale 10*»16 Nm T Vol- 10.25 Pig-73 Azm- 5 N 0.46 16 204 P -10.71 5 113

Best Double Coup Ie:Mo-1.0*10**17 NP1 Strike-186 Dip-42 Slip- 66 NP2: 37 52 110

13 02 25 49.77 8.331N 39.308E 12km 5.0mb ( 35 obs.) 4.9Msz ( 14 obs.)ETHIOPIACENTROID, MOMENT TENSOR (HRV)Data Used: GDSNL.P.B.: 22S, 33CCentroid Location:Origin Time 02:25:49.7 1.1Lat 7.75N 0.10 Lon 39.06E 0.06Dep 15.0 FIX Half-duration 1.2Pr i nc i poI Axes:

Scale 10«»17 Nm T Val- 1.36 Pig-18 Azm-313 N -0.45 71 147 P -0.92 4 45

Best Double Coup Ie:Ma-1.1 10*»17 NPl Strike- 90 Dip-74 Slip- 10 NP2: 357 80 164

13 10 55 56.15 14.926S 176.924W 33km 5.7mb ( 56 obs.) 6.0MSZ ( 52 obs.) FlJI ISLANDS REGION FAULT PLANE SOLUTION: P-Woves NP1:Strike- 33 Dip-70 Slip- 150 NP2: 134 62 23

Princ i poI Axes:T Pig-35 Azm-351 P 5 85

Comment: The focal mechanism is poorly controlled and corresponds to strike-slip 'aulting with o moderate reverse component. The preferred fault plane is not de te rmi ned.

RADIATED ENERGYNo. of sto: 22 Focal mech. F Energy 1 .7±0.3«10»* 13 Nm

MOMENT TENSOR SOLUTION Dep 4 No. of sto: 26 Pr i nc i poI Axes:

Scale 10**18 Nm T Vol- 2.01 Pig-27 Azm-358 N 0.04 58 214 P -2.05 16 96

Best Double Coup Ie:Mo-2.0*10»*18 NPl:Strike-139 Dip-59 Slip- 8 NP2: 45 83 149

CENTROID, MOMENT TENSOR (HRV) Data Used: GDSNL.P.B.: 43S, »»C M.W.: 35S, 69C Centroid Location: Or igin Time 10:55:59.9 0.1 Lat 14.84S 0.01 Lon 176.65W 0.01 Dep 15.0 FIX Half-duration 2.8 P r i nc i poI Axes:

Scale 10*»18 NmT Vol- 2.06 Pig-11 Azm- 7N -0.35 68 249P -1.71 19 101

Best Double Coup Ie:Mo-1.9*10**18NP1:Strike-143 Dip-68 Slip- -6NP2: 235 84 -158

FEB 1993 PAGE 20

13 21 19 36.03 51.720N 176.447E 33km 5.3mb (117 obs.) 4.5Msz ( 21 obs.) RAT ISLANDS, ALEUTIAN ISLANDS CENTROID. MOMENT TENSOR (HRV) Date Used: GDSN L.P.B.: 32S. 48C Centroid Location:Origin Time 21:19:37.8 0.7 Lot 52.08N 0.07 Lon 177.26E 0.13 Dep 25.6 4.5 Ho If-durotion 1.1 Pr i nc i pa I Axes:

Scale 10**16 NmT Vol- 5.84 Pig-65 Azm-353N -0.27 2 87P -5.57 25 177

Best Double Coup Ie:Mo-5.7*10»* 16NP1:Strike-271 Dip-20 Slip- 95NP2: 86 70 88

13 22 11 11.85 6.699N 123 709E 617km5.0mb ( 42 obs.)MINDANAO, PHILIPPINE ISLANDSCENTROID, MOMENT TENSOR (HRV)Data Used: GDSNL.P.B.: 14S, 18CCentroid Location:Origin Time 22:11:17 0 0.7Lot 6.7 IN FIX;Lon 123.71E FIXDep 615.4 6.6 Ho If-durotion 1.0Pr i nc i pa I Axes:

Scale 10**16 NmT Vol- 8.84 Pig-42 Azm-140 N 0.83 9 41 P -9.66 47 301

Best Double Coup Ie:Mo-9.2*10** 1 6 NP1:Strike-295 Dip-10 Slip- -16 NP2: 41 87 -99

15 08 55 26.38 12.505S 166.387E 129km5.5mb ( 59 obs.)SANTA CRUZ ISLANDSCENTROID. MOMENT TENSOR (HRV)Data Used: GDSNL.P.B.: 45S. *»CCen t ro i d Locat i on:Or igi n Time 08 55 26.4 0.2Lot 11.98S 0.02 Lon 166.33E 0.01Dep 46.3 1.0 Hoif-durotion 2.3P r i nc i poI Axes:

Scale 10«*17 NmT Vol- 6.54 Pig-79 Azm-318 N 0.71 8 178 P -7.25 7 87

Best Double Couple Mo-6.9«10»« 1 7 NP1:Strike-168 Dip-39 Slip- 76 NP2: 5 52 101

15 12 02 13.45 20.040S 169 187E 46km5.1mb ( 38 obs.) 4 4Msz ( 4 obs.)VANUATU ' ISLANDSCENTROID, MOMENT TENSOR (HRV)Dato Used: GDSNL.P.B.: 17S, 20CCentroid Location:Or igi n T i me 12 02:17 6 1 . 5Lot 20.21S 0.14 Lon 169 3lE 0.11Dep 40.5 8.7 Ho!'-Ourct.on i 0P r i nc i pa I Axes.

Scale 10**16 NmT Vol- 4.62 Pig-73 Azm-116 N 0.45 10 350 P -5.07 '3 257

Best Double Coup Ie:Mo-4.B*10** 1 6 NP1:Strike-334 Dip-33 Slip- 71 NP2: 176 59 102

16 09 16 16.25 15.472S 173.285W 39km5.1mb ( 32 obs.) 4.9Msz ( 28 obs.)TONGA ISLANDSCENTROID, MOMENT TENSOR (HRV)Data Used: GDSNL.P.B.: 35S, 66CCen t ra i d Locot i an:Origin Time 09:16:20.8 0.4Lot 15.39S 0.05 Lon 172.89W 0.04Dep 15.0 FIX Half-durotion 1.2Pr i nc i pa I Axes:


Best Double Coup Ie:Mo-1.5»10«* 17 NP1:Strike-158 Dip-26 Slip- 62

NP2: 67 103

17 05 59 49.26 7.784S 117.392E 280km5.2mb ( 52 obs.)BALI SEACENTROID, MOMENT TENSOR (HRV)Dato Used: GDSNL.P.B.: 20S, 24CCen t roi d Locat i on:Origin Time 05:59:53.7 0 . 7Lot 7.78S 0.06 Lon 117.53E 0.11Dep 273.9 3.3 Half-duration 1.1Pr i nc i pa I Axes:

Scale ie**16 Nm T Vol- 7.90 Pig-55 Azm-358 N -0.21 8 99 P -7.69 34 194

Best Double Coup Ie:Ma-7.8*10*«16 NP1:Strike-315 Dip-13 Slip- 127 NP2: 97 80 82

17 07 22 44.36 35.515N 42.647E 18km4.9mb ( 45 obs.) 4.9Msz ( 9 obs.)IRAQCENTROID, MOMENT TENSOR (HRV)Dato Used: GDSNL.P B.: 23S, 42CCen t roi d Locat i on:Origin Time 07:22:47.1 0.5Lot 35.19N 0.07 Lon 42.15E 0.04Dep 33.0 FIX Hoif-durotion 1.2Pr i nc i pa I Axes:

Scole 10«*17 Nm T Val- 1.37 Pig-11 Azm-112 N e.21 59 223 P -1.58 28 16

Best Double Couple Mo-1 . 5*10** 17 NP1 : Strike-158 Dip-62 Slip 167 NP2- 62 79 -29

17 17 46 23 52 6 002S 150 604E 25km5.1mb ( 21 obs.) 5 2Msz ( 43 obs.)NEW BRITAIN REGION, P.N.G.CENTROID, MOMENT TENSOR (HRV)Dato Used: GDSNL.P.B. : 41S. 80CCentroid Loco t i on:Origin Tirne 17:46:33.0 0.3Lot 6.14S 0.03 Lon 150.81E 0.04Dep 15.0 FIX Half-duration 1.6Pr i nc i pa I Axes:

Scole 10**17 Nm T Vol- 2.55 Pig-63 Azm- 1 N 0.29 5 262 P -2.84 26 170

Best Double Coup Ie:Mo-2.7»10** 1 7 NP1:Strike-249 Dip-19 Slip- 76 NP2: 83 71 95

18 10 10 48.46 0.457S 19.454W 10km 5 2mb ( 63 obs.) 5.8Msz ( 32 obs.) CENTRAL MID-ATLANTIC RIDGE CENTROID, MOMENT TENSOR (HRV) Dato Used: GDSN L.P.B.: 47S, «*C Cen t ro i d Loco t i on:0 r igin Time 10:11: 1.60.1 Lot 0.16S 0.02 Lon 19.59W e.01 Dep 15.0 FIX Half-duration 3.3 Pr i nc i poI Axes:

Scole 10«*18 NmT Val- 3.04 Pig- 3 Azm- 32N 0.09 80 281P -3.12 9 122

Best Double Coup Ie:Mo-3.1 * 10«* 18NP1:Strike-167 Dip-81 Slip- -4NP2: 257 86 -171

18 19 35 36.81 52.998S 72 687E 10km 5.5mb ( 40 obs.) 4.9Msz ( 5 obs.) KERGUELEN ISLANDS REGION CENTROID, MOMENT TENSOR (HRV) Data Used: GDSN L.P.B.: 28S, 44C Centroid Location:Origin Time 19:35:43.9 0.5 Lot 52.92S 0.07 Lon 72.77E 0.17 Dep 15.0 FIX Hoif-durotion 1.2 Principal Axes:

Scole 10..17 NmT Vol- 1.65 Pig-50 Azm-225 N -0.05 7 126 P -1.59 39 30

Best Double Couple:Mo-1.6*10**17 NP1:Strike- 73 Dip- 9 Slip- 36 NP2: 307 85 97

19 00 43 16.63 27.813S 74.097E 10km5.1mb ( 21 obs.) 4.8Msz ( 4 obs.)MID-INDIAN RIDGECENTROID, MOMENT TENSOR (HRV)Dato Used: GDSNL.P.B.: 20S, 28CCentroid Location:Origin Time 00:43:22.0 0.5Lot 27.90S 0.09 Lon 74.00E 0.14Dep 15.0 FIX Half-duration 1.3Principal Axes:

Scole 10*»16 Nm T Vol- 8.50 Pig- 0 Aztn-219 N -1.84 90 180 P -6.66 0 129

Best Double Coup Ie:Mo-7.6*10*»16 NP1:Strike-264 Dip-90 Slip 180 NP2: 354 90 0

20 07 11 52.12 22.110S 174.838W 44km5.6mb ( 30 obs.) 5.5Msz ( 47 obs.)TONGA ISLANDS REGIONCENTROID, MOMENT TENSOR (HRV)Data Used: GDSNL.P.B.: 37S. 68CCentroid Location:Or igi n T ime 07:11:53.6 0.5Lot 21.27S 0.06 Lon 175.24W 0.04Dep 15.0 BDY Half-durotion 1.6Pr i nc i poI Axes:

Scale 10**17 NmT Vol- 2.53 Pig-34 Azm«304 N -0.50 26 195 P -2 02 45 76

Best Double Coup Ie:Mo-2.3«10»»17 NP1:Strike- 90 Dip-27 Slip- -13 NP2: 192 84 -116

21 07 13 20.12 6.726S 127 636E 368km5.3mb ( 77 obs.)BANDA SEACENTROID, MOMENT TENSOR (HRV)Data Used: GDSNL.P.B.: 30S, 44CCentroid Location:Or igin Time 07:13.26.2 0 . 3Lot 6.29S 0.03 Lon 127.84E 0.04Dep 365 2 1.6 Half-duration 5.1Pr i nc i pa I Axes:

Scole 10««17 NmT Val- 3.33 Pig-49 Azm-223 N 0 36 7 125 P -3 69 40 29

Best Double Coup Ie:Mo-3.5«10**17 NP1:Strike- 70 Dip- 8 Slip- 34 NP2: 306 85 97

22 00 08 55.05 47.191N 154.125E 33km5.4mb (126 obs.) 5.4Msz ( 26 obs.)KURIL ISLANDSCENTROID, MOMENT TENSOR (HRV)Data Used: GDSNL.P.B.: 38S, 90CCen t ro i d Location.Origin Time 00:09: 2.5 0.3Lot 47.34N 0.03 Lon 154.38E 0.64Dep 16.0 BDY Half-duration 1.8Pr i nc i poI Axes:

Scole 10**17 NmT Vol- 3.81 Pig-73 Azm-256 N 0.15 11 26 P -3.96 12 118

Best Double Coup Ie:Ma-3.9«10«*17 NP1:Strike-222 Dip-34 Slip- 110 NP2: 19 58 77

22 06 37 22.21 47.129N 154.061E 25km 5.6mb (123 obs.) 5 2Msz ( 28 obs.) KURIL ISLANDSCENTROID, MOMENT TENSOR (HRV) Data Used: GDSN L.P.B.: 38S, 74C Cen t ro i d Lacot i on: Origin Time 06:37:28.5 0.3 Lot 47.16N 0.04 Lon 154.20E 0.04 Dep 27.1 1.9 Half-durotion 1.5 Pr i nc i pa I Axes:

Scole 10»»17 Nm T Vol- 2.17 Pig-74 Azm-264

PAGE 21 FEB 1993

N 0.29 9 26P -2.46 14 118

Best Double Couple:Mo-2.3*10**17NP1:Strike-220 Dip-32 Slip- 107NP2: 21 59 80

22 07 06 01.39 47.125N 154.064E 44km5.7mb (124 obs.) 5.2Msz ( 26 obs.)KURIL ISLANDSCENTROID. MOMENT TENSOR (HRV)Doto Used: GDSNL.P.B.: 30S. 61CCent ro i d Locot i on:Origin Time 07:06: 4.2 0.4Lot 47.24N 0.05 Lon 154.04E 0.05Dep 15.0 BDY Ho If-duration 1.6Pr i nc i poI Axes:


Best Double Coup Ie:Ma-3.2*10** 17 NP1:Strike-226 Dip-23 Slip- 115 NP2: 20 70 80

23 11 56 27.10 86.941N 56.073E 10km 4.7mb ( 47 obs.) 4.6Msz ( 13 obs.) NORTH OF FRANZ JOSEF LAND CENTROID. MOMENT TENSOR (HRV) Data Used: GDSN L.P.B.: 22S. 34C Cen t ro i d Locat i on: Or igi n T ime 11 56:30.5 0.5 Lot 86.95N 0.06 Lan 56 68E 1 36 Dep 16.3 4.6 Half-duration 1 1 Pr i nc i pa I Axes:


Best Double Coup Ie Mo-5.9*10** 16NP1:Strike- 56 Dip-46 Slip 126NP2: 281 54 -59

24 02 44 44.93 1.273N 129.392E 33km5.0mb ( 11 abs.) 4.8Msz ( 4 obs.)HALMAHERA, INDONESIACENTROID. MOMENT TENSOR (HRV)Data Used: GDSNL.P.B.: 32S, 48CCentroid Location:Origin Time 02:44:48.5 0 . 5Lot 1.26N 0.06 Lon 129.39E 0.05Dep 26.4 4.7 Ho I f-durotion 1.2Principal Axes:


Best Double Coup Ie.Mo-1.1«1e*«17 NP1 Strike- 7 Dip-72 Slip- 171 NP2- 100 82 18

24 12 39 59.59 16 362S 172 861W 33km5.0mb ( 20 obs.) 4.8Msz ( 17 abs.)SAMOA ISLANDS REGIONCENTROID. MOMENT "ENSOR , HPV;Da to Used: GDSNL.P.B.: 30S. 46CCentraid Location:Or igi n T ime 12:40: 3.30.7Lot 16.68S 0.08 Lon 172.44W 0.67Dep 15.0 FIX Half-duration 1.2P r i ncipoI Axes:


Best Double Coup Ie:Mo-8.7*10**16 NP1:Strike-169 Dip-15 Slip- 61

NP2: 19 77 97

24 22 21 37.83 24.931S 68.386W 119km 5.8mb ( 76 obs.) CHILE-ARGENTINA BORDER REGION FAULT PLANE SOLUTION: P-Woves NP1 :St r i ke-1 10 Dip-62 Slip 118 NP2: 339 39 -49

Pr i nc i pa I Axes:T Pig-13 Azm-220 P 62 335

Comment: The focol mechanism is moderately well controlled and corresponds to narmol faulting with o moderate strike slip component. The preferred fault plane is not determined.

RADIATED ENERGYNo. of sto: 11 Focol mech. F Energy 6.5±1.6*10**12 Nm

MOMENT TENSOR SOLUTION Dep 114 No. of sto: 12 Pr i nc i pa I Axes:

Scale 10**17 Nm T Vol- 3.83 Pig- 8 Azm-204 N 0.15 31 110 P -3.97 58 307

Best Double Couple:Mo-3.9*10**17 NP1:Strike-325 Dip-46 Slip- -44 NP2: 89 60 -127

CENTROID, MOMENT TENSOR (HRV) Data Used: GDSNL.P.B.: 39S. 79C M.W.: 11S. 11C Centroid Location: Or igin T ime 22:21.44.3 0.2 Lot 25.18S 0.02 Lan 68.45W 0.03 Dep 132.6 1.0 Half-durotion 1.7 P r i nc i poI Axes:

Scale 10**17 Nm T Vol- 3.81 Pig- 5 Azm-214 N -0.47 27 122 P -3.34 62 313

Best Double Couple-Ma-3 6*16«*17 NP1 :Strike-331 Dip-47 Slip- -51 NP2: 101 55 -124

25 07 34 57.06 23 996S 177 218W 166km5.3mb ( 38 abs )SOUTH OF FIJI I SLANDSCENTROID. MOMENT TENSOR (HRV)Doto Used: GDSNL.P.B.: 42S. 81CCent ro i d Lacot i an :Or i gi n T ime 07:35: 1.30.3Lot 23.77S 0.03 Lan 177 01W 0.02Dep 168.4 0.8 Half-duration 1 6Pr i nc i poI Axes:


Best Double Coup Ie:Ma-3.4*10** 17 NP1:Strike-287 Dip- 9 Slip- -10 NP2: 27 89 -99

25 09 27 43.10 40.268N 142.333E 48km 5.5mb (106 obs.) 5.3Msz ( 34 abs.) NEAR EAST COAST OF HONSHU. JAPAN CENTROID. MOMENT TENSOR (HRV) Doto Used: GDSN L.P.B.: 38S, 87C Cent ra i d Locat i on: Origin Time 09:27:45.8 0.2 Lot 40.29N 0.03 Lon 142.66E 0.03 Dep 34.0 FIX Hoif-durotion 1.6 Pr i nc i pa I Axes:

Scale 10..17 Nm T Vol- 3.88 Pig-64 Azm-317 N 0.33 12 202 P -4.20 23 106


26 21 47 53.21 5.442S 144.635E 15km 5.2mb ( 35 obs.) 4.6Msz ( 4 Obs.) NEW GUINEA. PAPUA NEW GUINEA CENTROID, MOMENT TENSOR (HRV) Doto Used: GDSN L.P.B.: 31S, 48C Centroid Location: Origin Time 21:48: 1.4 0.4 Lot 5.55S 0.06 Lon 144.66E 0.06 Dep 29.7 4.7 Ha If-durotion 1.1 Pr i nc i poI Axes:


Best Double Couple:Mo-9.3*10**16 NP1:Strike- 80 Dip-57 Slip- -5 NP2: 173 85 -147

27 18 38 10.08 49.842N 156.193E 35km 5.4mb (108 obs.) 4.9Msz ( 36 obs.) KURIL ISLANDSCENTROID, MOMENT TENSOR (HRV) J3ata Used: GDSN L.P.B.: 38S. 80C Centroid Location: Origin Time 18:38:16.8 0.3 Lot 49.67N 0.04 Lon 156.54E 0.04 Dep 47.5 2.5 Ho If-duratian 1.2 Pr i nc i pa I Axes:

Scale 10**17 Nm T Val- 1.61 Pig-77 Azm-326 N 0.30 5 214 P -1.91 12 123

Best Double Coup Ie:Mo-1.8*10** 1 7 NP1:Strike-206 Dip-33 Slip- 81 NP2: 37 57 96

28 06 45 28.70 8.249N 121.732E 32km5.1mb ( 52 obs.)MINDANAO. PHILIPPINE ISLANDSCENTROID. MOMENT TENSOR (HRV)Dato Used: GDSNL.P.B.: 9S, 12CCen t ro i d Locot i an:Origin Time 00.45:29.4 0.8Lot 8.20N 0.09 Lon 122.55E 0.12Dep 17.9 7.9 Half-duration 1.0Pr i nc i poI Axes:

Scale 10**16 Nm T Val- 11.95 Pig-32 Azm-246 N -2 82 2 338 P -9.13 58 71

Best Double Coup Ie.Ma-1.1 * 10**17 NP1 :Str i ke-327 Dip-13 Slip 101 NP2 158 77 -88

28 13 29 24.65 49.47 S 114 29 W 10km 5.0mb ( 5 obs.) 5.1Msz ( 3 abs.) SOUTHERN EAST PACIFIC RISE CENTROID, MOMENT TENSOR (HRv) Dato Used: GDSN 1.P B.. 29S, 44C Centraid Location.Origin T ime 13.29:16.0 0.5 Lot 49.66S 0.07 Lon 114.73W 0.07 Dep 15.0 FIX Half-duration 1.0 Pr i nc i poI Axes:

Scale 10..16 NmT Val- 11.34 Pig- 0 Azm-240N -0.07 90 180P -11.27 0 150

Best Double Couple:Mo-1.1 *10**17NP1 :Str ike-285 Dip-90 Slip 180NP2: 15 90 0

Compiled by Pingsheng Chong, Willis S. Jacobs, Stuart K. Kayanogi, Christina K. Lovonne, John H. Minsch, Russell E. Needham, Woverly J. Person, Bruce W. Presgrove ond William H. Schmieder.

PAGE 22

07 February 1993 13:27:42.01 Near West Coast of Honshu, Japan

OEM (BHZ)P x3

HIA (LHZ)P x2

WMQ (LHZ)

LSA (LHZ)

XAN (BHZ) p

60:t

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24 February 1993 22:21:37.83 Chile-Argentina Border Region

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Earthquakes located in February, 1993.

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.DEPARTMENT OF THE INTERIOR/GEOLOGICAL SURVEYNational Earthquake Information Center

MARCH 1993

DAY ORIGIN TIMEUTC

HR MN SEC


LAT LONG

DEPTH MAGNITUDES SDGS

MB Msz

81

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0.9 5 REPUBLIC OF SOUTH AFRICA. ML 2.2 (PRE).1.0 365 IRIAN JAVA, INDONESIA. Mw 6.2 (GS). 6.1 (HRV). Felt in

central Irian Joyo. Two events about 1.5 seconds apart.Depth from broadband displacement seismograms, based onfirst event.SOUTHERN CALIFORNIA. <PAS-P>. ML 3.0 (PAS). Felt.NORTH ISLAND, NEW ZEALAND. ML 3.8 (WEL).CENTRAL ALASKA. <AElC>.CENTRAL ALASKA. <AElC>. ML 2.5 (AEIC).EAST OF KURIL ISLANDSNORTHWESTERN BALKAN REGION. ML 2.2 (TTG).CENTRAL CALIFORNIA. <PAS-P>. ML 3.1 (PAS). 2.9 (GS).POLAND. ML 3.9 (VIE). Felt in the Bordejov-VysneRosIovic«-GiroItovce oreo, Slovakia.MINDANAO, PHILIPPINE ISLANDSGULF OF ALASKA. ML 2.5 (AEIC).REPUBLIC OF SOUTH AFRICA. ML 28 (PRE).AEGEAN SEA. ML 2.4 (THE).TURKEY. MD 2.7 ( ISK).SOUTH OF FIJI ISLANDSSOUTH OF KERMADEC ISLANDSOFF COAST OF OREGON. ML 3.1 (GS).VANCOUVER ISLAND REGION. <PGC-P>. ML 3.6 (PGC).GREECE-ALBANIA BORDER REGION. ML 3.2 (TIR).SOUTHERN ALASKA. <AEIC>.OFF COAST OF OREGONOFF COAST OF OREGONREPUBLIC OF SOUTH AFRICA. ML 2.0 (PRE).NEVADA. ML 2.8 (GS).SICILY. ML 4.2 (THE).SOUTHERN ALASKA. <AEIC>.TURKEY. MD 2.8 ( ISK).E. RUSSIA-N.E. CHINA BORDER REG.GUERRERO, MEXICORYUKYU ISLANDSNORTHERN COLOMBIASAN JUAN PROVINCE. ARGENTINASTRAIT OF GIBRALTAR. mbLg 2.7 (MOD).OFF COAST OF OREGONHINDU KUSH REGION. AFGHANISTANAEGEAN SEA. ML 2.4 (THE).SOUTH OF HONSHU. JAPANGREECE. ML 2.0 (THE).

4.9 0.7 17 FIJI ISLANDS REGION. Mw 5.3 (HRV).TURKEY. MD 3.3 (ISK).REPUBLIC OF SOUTH AFRICA. ML 2.1 (PRE).GREECE. ML 3.3 (ATH), 3.0 (THE).SOUTH ISLAND. NEW ZEALANDSAN JUAN PROVINCE. ARGENTINA. MD 4.9 (SAN).REPUBLIC OF SOUTH AFRICA. ML 3.0 (PRE).SOUTHERN NORWAY. MD 2.1 (BER).FLORES REGION. INDONESIA. Mw 5.9 (GS), 5.7 (HRV). Feltstrongly on Flores Island. Depth from broadbanddisplacement seismogroms.

22 NEW MADRID. MISSOURI REGION. <SLM-P>. MD 3.0 (SLM).mbLg 3 1 (GS). Felt (IV) at East Prairie, Kewonee andLilbourn. (ill) at Matthews and New Madrid; (II) atPor togev i I Ie.

Annual Subscriptions: Superintendent of Documents, U.S. Government Printing Office, Washington, D.C. 20402. Bock issues: Books and Open-File Reports Section. U.S Geological Survey, Box 25425. Denver, CO 80225.

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MAR 1993 PAGE 2

62 66 46 13.3* 66.938 N 156.546 W 16 G 6.5 8 NORTHERN ALASKA. ML 3.6 (AEIC).62 66 51 46.655 41.667 N 22.476 E 16 G 6.4 8 NORTHWESTERN BALKAN REGION. ML 1.9 (THE).62 66 55 66.555 39.698 N 27.627 E 16 G 6.3 11 TURKEY. MD 3.1 (ISK).62 61 11 51.2% 32.916 S 76.724 W 33 N 1.1 9 CHILE-ARGENTINA BORDER REGION. MD 3.8 (SAN).62 01 47 56.2% 42.441 N 18.496 E 16 G 6.3 6 NORTHWESTERN BALKAN REGION. ML 1.7 (TTG).62 61 59 29.9? 43.47 N 5.46 E 16 G 1.6 8 NEAR SOUTH COAST OF FRANCE. ML 3.1 (SIR).62 62 45 45.2* 15.186 N 92.167 W 91 * 3.9 1.1 13 MEXICO-GUATEMALA BORDER REGION62 63 37 14.5? 33.51 S 72.67 W 16 G 6.7 13 OFF COAST OF CENTRAL CHILE. MD 4.1 (SAN).62 64 34 67.9 17.277 N 46.365 W 16 G 5.2 4.7 1.6 99 NORTHERN MID-ATLANTIC RIDGE62 64 56 11.9* 53.195 S 72.644 E 16 G 5.6 6.8 11 KERGUELEN ISLANDS REGION62 64 58 42.2? 54.46 N 161.36 W 33 N 4.6 6.3 4 ALASKA PENINSULA62 65 66 26.4* 53.265 S 72.749 E 16 G 5.1 6.7 11 KERGUELEN ISLANDS REGION62 65 19 34.6? 29.43 S 69.51 W 136 G 6.2 6 CHILE-ARGENTINA BORDER REGION62 65 26 53.5 31.142 S 67.852 W 16 G 6.9 8 SAN JUAN PROVINCE. ARGENTINA62 66 66 58.4% 38.799 N 26.411 E 16 G 6.8 6 AEGEAN SEA. MD 3.1 (ISK).

a 62 66 12 65.6 6.274 S 147.258 E 64 5.3 1.3 161 EASTERN NEW GUINEA REG.. P.N.G. Mw 5.6 (HRV).62 66 33 23.2* 34.412 S 76.766 W 16 1.3 21 CHILE-ARGENTINA BORDER REGION. MD 4.4 (SAN). Felt (IV)

at San Fernando; (IN) at Graneros. Santiago, Peumo, Roncagua and Son Vicente de Tagua-Tagua, Chile.

62 67 12 52.1 39.772 N 25.574 E 16 G 6.8 26 AEGEAN SEA. ML 3.6 (THE). MD 3.5 (ISK). 3.3 (ATH).62 67 14 12.2 43.416 N 5.415 E 16 G 6.8 16 NEAR SOUTH COAST OF FRANCE. ML 2.8 (STR).62 67 26 18.255 39.375 N 27.966 E 16 G 6.9 7 TURKEY. MD 2.8 (ISK).62 67 38 21.6* 42.664 N 126.395 W 16 G 3.7 6.4 13 OFF COAST OF OREGON62 67 54 59.8? 26.87 N 53.63 E 33 N 4.6 1.3 8 SOUTHERN IRAN62 68 14 47.3% 42.323 N 18.857 E 16 G 6.3 9 NORTHWESTERN BALKAN REGION. ML 1.7 (TTG).62 69 62 14.7* 18.729 N 66.476 W 33 N 6.3 7 PUERTO RICO REGION62 16 69 43.2? 41.96 N 27.44 E 16 G 6.8 4 TURKEY. MD 3.6 (ISK).62 16 17 45.6? 8.94 S 165.66 E 33 N 5.1 6.7 8 SOUTH OF JAWA. INDONESIA62 16 22 49.1? 6.45 S 166.65 E 124 * 4.5 6.9 16 JAWA. INDONESIA62 16 23 17.1? 38.16 N 28.12 E 16 G 6.6 5 TURKEY. MD 2.8 (ISK).62 16 35 59.6X 46.443 N 21.838 E 16 G 6.7 6 GREECE. ML 2.6 (THE).62 16 46 08.3* 33.366 N 116.363 W 12 5 SOUTHERN CALIFORNIA. <PAS-P>. ML 2.7 (PAS).62 11 57 59.3& 66.182 N 153.488 W 6 32 SOUTHERN ALASKA. <AEIC>. ML 2.5 (AEIC).62 12 64 52.6 58.371 N 143.566 W 16 G 3.1 6.5 46 GULF OF ALASKA. ML 3.2 (AEIC).62 12 11 24.3 38 293 N 28.687 E 23 3.6 1.1 35 TURKEY. MO 3.8 (ATH), 3.7 (ISK).62 12 38 16.3? 26.61 N 128.38 E 33 N 4.6 6.6 16 RYUKYU ISLANDS62 12 47 23.1 42.621 N 24.199 E 16 G 6.9 12 BULGARIA. ML 3.3 (THE).02 12 57 31.2* 10 997 N 69.557 W 33 N 3.3 1.4 6 VENEZUELA62 13 14 16.5% 31 949 S 67.297 W 167 ? 6.2 6 SAN JUAN PROVINCE, ARGENTINA02 13 26 23.9% 39.112 N 27.631 E 16 G 6.4 6 TURKEY. MD 2.8 (ISK).62 13 32 39.2* 35.164 N 120.657 W 6 G 8 CENTRAL CALIFORNIA. <PAS-P>. ML 2.6 (PAS). Felt (IV) at

Oceano and (II) at Coyucos. Also felt at Arroyo Gronde, Graver City and Pismo Beach.

02 13 36 34.4* 30.876 N 163.677 E 16 G 3.6 1.2 5 SICHUAN, CHINA02 14 46 44.4% 26.359 S 27.328 E 5 G 1.6 8 REPUBLIC OF SOUTH AFRICA. ML 2.9 (PRE).62 14 56 27.4% 41.216 N 22.060 E 10 G 6.7 9 NORTHWESTERN BALKAN REGION. ML 2.3 (THE).02 14 50 36.7* 28.442 S 70.415 W 16 G 1.4 11 CENTRAL CHILE62 14 52 56.6 43.422 N 5.445 E 16 G 6.5 9 NEAR SOUTH COAST OF FRANCE. ML 2.5 (STR).62 15 25 36.7? 31.05 S 178.66 W 33 N 4.8 1.2 13 KERMADEC ISLANDS REGION02 15 35 23.8% 41.182 N 22.676 E 16 G 0.7 5 NORTHWESTERN BALKAN REGION. ML 1.9 (THE).62 15 55 56.4% 38.407 S 176.178 E 177 « 6.7 29 NORTH ISLAND, NEW ZEALAND02 16 14 06.4% 41.185 N 22.666 E 16 G 6.5 5 NORTHWESTERN BALKAN REGION. ML 2.2 (THE).62 17 16 68.2? 4.43 S 164.44 W 16 G 4.4 4.4 1.4 7 CENTRAL EAST PACIFIC RISE62 17 26 59.6? 53.61 S 72.75 E 16 G 5.3 6.5 9 KERGUELEN ISLANDS REGION02 17 27 26.6» 34.865 N 35.191 W 16 G 4.7 4.5 1.2 11 NORTHERN MID-ATLANTIC RIDGE62 17 32 35.3? 37.48 N 26.46 E 16 G 6.9 6 DODECANESE ISLANDS. MD 3.1 (ISK).02 17 48 19.8» 41.231 N 22.055 E 10 G 0.7 9 NORTHWESTERN BALKAN REGION. ML 2.3 (THE).62 19 17 22.9? 31.40 S 68.47 W 93 ? 0.6 5 SAN JUAN PROVINCE, ARGENTINA62 20 09 62.7* 33.875 S 70.421 W 119 ? 1.6 20 CHILE-ARGENTINA BORDER REGION. MD 4.6 (SAN).02 26 20 19.5* 8.774 S 119.321 E 99 ? 4.9 0.8 16 FLORES REGION, INDONESIA02 21 38 67.6* 26.899 S 67.182 W 33 N 1.5 6 CATAMARCA PROVINCE, ARGENTINA02 21 43 15.9 24.295 S 67.080 W 178 5.1 1.1 112 CHILE-ARGENTINA BORDER REGION62 21 52 68.9? 6.49 S 146.93 E 33 N 1.4 5 EASTERN NEW GUINEA REG.. P.N.G.62 22 62 26.34 61.126 N 156.851 W 49 46 SOUTHERN ALASKA. <AEIC>. ML 2.5 (AEIC).62 23 43 30.4% 26.375 S 27.318 E 5 G 1.6 9 REPUBLIC OF SOUTH AFRICA. ML 2.6 (PRE).02 23 48 49.2 43.100 N 0.275 W 16 G 1.6 15 PYRENEES. ML 3.6 (LOG). mbLg 2.9 (MOD). Felt (III) at

Asson, Fronce.02 23 52 16.4% 26 408 S 27.385 E 5 G 1.0 5 REPUBLIC OF SOUTH AFRICA. ML 2.6 (PRE).03 01 13 52.1? 32.56 S 176.82 W 33 N 4.8 1.2 9 SOUTH OF KERMADEC ISLANDS03 01 14 07.7* 62.711 N 150.636 W 80 53 CENTRAL ALASKA. <AEIC>.03 01 17 03.1 39.763 N 25.574 E 16 G 1.1 17 AEGEAN SEA. ML 3.1 (THE). MD 3.3 (ISK), 3.1 (ATH).03 02 61 48.4* 33.668 N 116.772 W 13 7 SOUTHERN CALIFORNIA. <PAS-P>. ML 2.9 (PAS).63 02 22 48.6 39.742 N 25.544 E 16 G 1.1 15 AEGEAN SEA. ML 3.6 (THE). MD 3.2 (ISK). 3.6 (ATH).03 02 24 32.8? 31.26 S 68.85 W 113 ? 0.5 7 SAN JUAN PROVINCE, ARGENTINA63 03 12 52.3* 71.369 N 16.365 W 10 G 4.6 6.8 6 JAN MAYEN ISLAND REGION. MD 3.6 (BER).63 03 24 26.4 40.495 N 78.979 E 29 4.5 0.8 36 SOUTHERN XINJIANG, CHINA03 03 29 28.1 45.396 N 7.618 E 5 G 0.9 31 NORTHERN ITALY. ML 2.7 (LOG). 2.6 (GEN).03 04 14 27.54 35.630 N 117.447 W 3 14 CENTRAL CALIFORNIA. <PAS-P>. ML 3.6 (PAS), 2.7 (GS).63 64 15 21.6? 5.44 S 68.71 E 16 G 6.6 9 CHAGOS ARCHIPELAGO REGION63 04 28 04.6* 45.183 N 156.211 E 52 * 4.1 1.3 22 KURIL ISLANDS63 64 32 46.7* 14.319 N 61.163 W 33 N 6.7 8 WINDWARD ISLANDS. ML 2.4 (FDF). MD 2.5 (TRN).63 04 50 39.8* 24.311 S 67.159 W 196 * 4.1 1.3 13 CHILE-ARGENTINA BORDER REGION63 65 65 67.8* 49.829 N 28.763 W 16 G 4.4 3.9 1.1 28 NORTHERN MID-ATLANTIC RIDGE63 65 17 31.6? 25.42 N 96.23 E 33 N 4.5 6.9 7 INDIA-BANGLADESH BORDER REGION63 66 29 26.7% 39.817 N 23.796 E 10 G 6.4 8 AEGEAN SEA. ML 2.1 (THE).03 66 36 63.3% 41.132 N 22.439 E 16 G 0.7 9 NORTHWESTERN BALKAN REGION. ML 2.2 (THE).03 07 40 17.6? 38.47 N 29.23 E 16 G 0.6 4 TURKEY. MD 3.0 (ISK).63 68 18 22.5 51.084 N 176.193 W 16 D 4.4 1 2 25 ANDREANOF ISLANDS, ALEUTIAN IS. ML 4.4 (PMR).63 68 26 51.6& 34.642 N 116.566 W 5 11 SOUTHERN CALIFORNIA. <PAS-P>. ML 2.9 (PAS).63 68 36 49.7% 44.256 N 6.823 E 16 G 6.8 8 FRANCE. ML 2.1 (GEN).63 08 39 32.2 36.697 N 8.871 W 33 N 0.9 17 WEST OF GIBRALTAR. MD 3.4 (RBA). mbLg 3.3 (MOD).63 69 66 14.5% 39.135 N 27.646 E 16 G 027 TURKEY. MD 2.9 (ISK). '03 16 27 26.5% 32.526 S 71.711 W 33 N 0.5 10 NEAR COAST OF CENTRAL CHILE. MD 3.8 (SAN).

PAGE 3 MAR 1993

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TURKEY. MD 3.1 (ISK).TURKEY. MD 2.7 ( ISK).SPAIN. mbLg 2.9 (MDD).AEGEAN SEATURKEY. MD 2.8 (ISK).SOUTH OF MARIANA ISLANDSSOUTHERN ALASKA. <AEIC>.CENTRAL MID-ATLANTIC RIDGEFIJI ISLANDS REGION. Mw 5.3 (HRV).FIJI ISLANDS REGIONCHILE-ARGENTINA BORDER REGION. MD 4.6 (SAN).REPUBLIC OF SOUTH AFRICA. ML 2.3 (PRE).CALIFORNIA-NEVADA BORDER REGION. ML 3.4 (GS). 3.5(BRK).FRANCE. ML 2.6 (LDG).REPUBLIC OF SOUTH AFRICA. ML 2.4 (PRE).GREENLAND SEASOUTHERN CALIFORNIA. <PAS-P>. ML 2.9 (PAS). Felt iBrea Diamond Bar area.SOUTHERN CALIFORNIA. <PAS-P>. ML 2.5 (PAS). Felt in theBrea-Diamond Bar area.NORTHERN ITALY. ML 1.5 (GEN).NORTH ISLAND, NEW ZEALAND. ML 4.6 (WEL).NORTHWESTERN BALKAN REGION. ML 3.7 (GRF), 3.4 (BRA).3.3 (VIE). MD 3.5 (LJU). Felt (V) at Raka, Arto. Buckaand Leskovec; (IV) at Sevnica and Krska Vas, Slovenia.REPUBLIC OF SOUTH AFRICA. ML 2.5 (PRE).FIJI ISLANDS REGIONFRANCE. ML 1.8 (GEN).CHILE-ARGENTINA BORDER REGIONLA RIOJA PROVINCE, ARGENTINAGREECE. ML 1.5 (THE).SOUTHERN ALASKA. <AEIC>. ML 2.5 (AEIC).FIJI ISLANDS REGION. Mw 5.9 (GS), 6.0 (HRV). Ms 6.1(BRK). Complex event observed on broadband displacementse i smog rams.FIJI ISLANDS REGIONVANUATU ISLANDSNEAR WEST COAST OF HONSHU, JAPANREPUBLIC OF SOUTH AFRICA. ML 3.1 (PRE). mbLg 3.4 (BUL).BAJA CALIFORNIA, MEXICONEAR COAST OF CENTRAL CHILE. MD 3.7 (SAN).GREENLAND SEAGREENLAND SEAOFF EAST COAST OF HONSHU, JAPANCENTRAL ALASKA. <AEIC> ML 2.5 (AEIC).MINDANAO, PHILIPPINE ISLANDSVANCOUVER ISLAND REGIONGREECE. ML 2.6 (THE).POLAND. MG 2.8 (WAR).NORTH ISLAND, NEW ZEALANDNEAR COAST OF CENTRAL CHILE. MD 3.5 (SAN).NEAR SOUTH COAST OF FRANCE. ML 3.1 (LDG).COOK STRAIT, NEW ZEALAND. ML 3.8 (WEL).NORTHERN ITALY. ML 2.1 (GEN).REPUBLIC OF SOUTH AFRICA. ML 3.4 (PRE).NEAR COAST OF NICARAGUA. MD 4.0 (APY).CHILE-ARGENTINA BORDER REGION. MD 3.6 (SAN).SOUTHERN ALASKA. <AEIC>.GREECE. MD 3.5 (ATH).GREENLAND SEASAN JUAN PROVINCE. ARGENTINA. MD 4.2 (SAN).GREENLAND SEAKERMADEC ISLANDS REGIONSOUTHERN ALASKA. <AEIC>.POLAND. MG 2.7 (WAR).CENTRAL ALASKA. <AEIC>.NEAR SOUTH COAST OF FRANCE.NORTH SEA. MD 2.4 (BER).FIJI ISLANDS REGION. Mw 5.7displacement seismograms.NEAR COAST OF CENTRAL CHILE.FIJI ISLANDS REGIONGREENLAND SEAGREENLAND SEASAN JUAN PROVINCE, ARGENTINAREPUBLIC OF SOUTH AFRICA. ML 3.5 (PRE).AEGEAN SEAGREECE-ALBANIA BORDER REGIONPOLAND. ML 3.3 (WAR).RED SEA. MD 4.3 (RYD) .POLAND MG 2.5 (WAR).FIJI ISLANDS REGION. Mw 5.3 (HRV).GREENLAND SEATURKEY. MD 2.8 (ISK).WEST OF GIBRALTAR. MD 3.2 (RBA). mbLg 3.4 (MDD).TURKEY. MD 2.6 (ISK).CENTRAL ITALY. ML 3.3 (LDG). MD 3.2 (LJU), 2.8 (TRI).SOUTHERN ALASKA. <AEIC>. ML 2.7 (AEIC). 2.7 (PMR).NORTHERN ALASKA. <AElC>. ML 2.6 (AEIC).CENTRAL ITALY. ML 3.8 (LDG), 3.8 (VIE), 3.3 (ROM). MD3.6 (TRI). 3.6 (FIR).KURIL ISLANDS

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MAR 1993 PAGE 4

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PAGE 5 MAR 1993

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SOLOMON ISLANDSSANTA CRUZ ISLANDS REGIONSANTA CRUZ ISLANDS REGIONSANTA CRUZ ISLANDS REGIONFIJI ISLANDS REGIONSOUTH OF FIJI ISLANDS. Mw 6.6 (GS). 6.5 (HRV). Ms 6.6(BRK). Mo-1.7*16**19 Nm (PPT). Depth from broadbanddisplacement seismograms.FIJI ISLANDS REGIONNEAR COAST OF NICARAGUA. MD 5.2 (UPA), 4.7 (APY). Felt(VI) at Corinto; (V) at Chinandego and Lean; (IV) atManagua and (III) at Granada. Felt (V) at La Unian andSan Miguel; (Ml) at San Salvador, El Salvador.NORTH ATLANTIC OCEAN. MD 4.3 (RBA)SOLOMON ISLANDSSANTA CRUZ ISLANDS REGIONSOUTH ISLAND. NEW ZEALAND. ML 4.2 (WEL).GREECE. ML 1.9 (THE).SANTA CRUZ ISLANDS REGIONSOLOMON ISLANDSSOLOMON ISLANDS. Mw 6.7 (HRV). Ms 6.5 (BRK).Mo-1.6»10**19 Nm (PPT). Felt (III) at Honiara.SOLOMON ISLANDSSOLOMON ISLANDSSOLOMON ISLANDSPYRENEES. ML 3.0 (LDG)Bogneres de Bigorre, France.THE NETHERLANDS. ML 2.2 (BNS).ALASKA PENINSULA. <AEIC>.KERMADEC ISLANDS REGIONALASKA PENINSULAOFF EAST COAST OF HONSHU, JAPANSANTA CRUZ ISLANDSKURIL ISLANDSSOLOMON ISLANDSNORTH ISLAND. NEW ZEALANDWEST OF MACOUARIE ISLANDSANTA CRUZ ISLANDS REGIONALASKA PENINSULA. <AEIC>.NORTH ATLANTIC OCEAN. mbLg 3.0 (MOD).HOKKAIDO, JAPAN REGIONNEAR EAST COAST OF HONSHU. JAPANOFF COAST OF COSTA RICAOFF E. COAST OF N. ISLAND, N.Z.NORTHERN ALGERIA mbLg 3.5

mbLg 3.9 (MDD).

mbLg 2.7 (MDD). Felt (II) at

Fel t T i ssems iIt(MDD) Prov i nee.NORTHERN ALGERIA. mbLg 3.3 (MDD). SOUTHWESTERN RYUKYU ISLANDSOFF E. COAST OF N. ISLAND, N.Z. ML 4.4 (WEL). NORTH ISLAND. NEW ZEALAND. ML 3.8 (WEL). REPUBLIC OF SOUTH AFRICA. ML 2.7 (PRE). CYPRUS REGION. ML 3.0 (CSS). FRANCE. ML 2.5 (LDG). SAN JUAN PROVINCE, ARGENTINA NEAR WEST COAST OF HONSHU, JAPAN OFF W. COAST OF N. ISLAND, N.Z. SANTA CRUZ ISLANDS REGION. Mw 5.3 (HRV). HALMAHERA, INDONESIA PYRENEES. ML 1.0 (STR). RYUKYU ISLANDSSTRAIT OF GIBRALTAR. mbLg 2.9 (MDD). SANTA CRUZ ISLANDS REGIONSANTA CRUZ ISLANDS REGION. Mw 5.6 (HRV). SANTA CRUZ ISLANDS REGION SANTA CRUZ ISLANDS REGION SOUTHERN ALASKA. <AEIC>. ML 3.0 (AEIC). GREECE. MD 3.1 (ATH). GULF OF CALIFORNIAGERMANY. ML 2.4 (BNS). Felt ot Alsdorf. NEAR SOUTH COAST OF FRANCE. ML 2.5 (STR). TURKEY. MD 2.8 (ISK ) . POLAND. ML 2.8 (WAR).NORTHERN ALASKA. <AEIC>. ML 2.8 (AEIC). WESTERN IRANOFF E. COAST OF N. ISLAND. N.Z. ML 4.1 (WEL). NORTHERN COLOMBIA NORTHERN ITALY. ML 2.2 (GEN). NORTH OF SVALBARDYELLOWSTONE REGION, WYOMING. ML 2.8 (GS). 3.1 (BUT). NORTHWESTERN BALKAN REGION. ML 2.7 (THE). 2.2 (SKO). TONGA ISLANDS REGION CRETE. ML 3.3 (ATH).ADRIATIC SEA. MD 2.7 (LJU), 2.4 (TRI). SAN JUAN PROVINCE, ARGENTINA RAT ISLANDS. ALEUTIAN ISLANDS REPUBLIC OF SOUTH AFRICA. ML 2.2 (PRE). NORTHERN COLOMBIA TRINIDAD. MD 2.8 (TRN).MARIANA ISLANDS. Felt (III) in northern Guam. CHILE-ARGENTINA BORDER REGION NORTHERN ITALY. MD 2.6 (TRI). FIJI ISLANDS REGION FlJI ISLANDS REGION

MAR 1993 PAGE 6

87 22 42 27.6 48.498 N 19.718 E 18 G 1.3 6 ALBANIA. ML 2.6 (TIR).87 23 37 88.8 43.717 N 16.118 E 18 G 1.1 34 NORTHWESTERN BALKAN REGION. ML 3.8 (LOG), 3.7 (TTG).

3.6 (VIE). MD 3.4 (TRI). Felt (III) at Split, Croatia.87 23 54 43.1% 48.948 S 175.154 E 61 1.1 26 NORTH ISLAND, NEW ZEALAND88 81 84 47.5«c 66.232 N 149.991 W 22 18 NORTHERN ALASKA. <AEIC>. ML 2.5 (AEIC).88 62 43 49.6* 42.859 N 23.645 E 16 G 8.6 7 BULGARIA. ML 2.6 (THE).88 83 11 57.4 26.824 S 26.788 E 5 G 1.2 18 REPUBLIC OF SOUTH AFRICA. ML 3.8 (PRE).88 63 26 89.4&: 36.166 N 128.727 W 18 9 CENTRAL CALIFORNIA. <GM-P>. MD 2.5 (GM).88 64 14 15.9<c 59.584 N 152.749 W 76 48 SOUTHERN ALASKA. <AEIC>.88 86 18 23.8* 37.833 N 28.897 E 16 G 8.7 18 IONIAN SEA. ML 3.9 (ATH).88 86 11 28.5? 7.48 N 76.52 W 57 ? 3.7 8.3 5 NORTHERN COLOMBIA. MD 3.8 (UPA).08 86 15 28.8* 32.864 N 78.325 E 33 N 4.3 1.2 11 PAKISTAN88 87 89 41.8 43.769 N 7.469 E 16 G 8.5 9 NEAR SOUTH COAST OF FRANCE. ML 2.2 (LDG).88 08 81 25.7 43.634 N 146.634 E 71 D 5.1 8.9 167 KURIL ISLANDS88 88 17 32.955 48.296 S 173.444 E 216 8.2 23 COOK STRAIT, NEW ZEALAND88 88 51 13.3% 48.652 N 23.376 E 16 G 0.5 6 GREECE. ML 1.8 (THE).88 89 89 82.lie 33.997 N 117.287 W 13 11 SOUTHERN CALIFORNIA. <PAS-P>. ML 3.1 (PAS), 2.8 (GS).

Felt (IV) at Lomo Linda and Yucaipa.88 18 89 88.4% 44.331 N 7.378 E 18 G 8.5 6 NORTHERN ITALY. ML 1.8 (GEN).88 18 21 53.6% 44.328 N 7.362 E 18 G 8.4 6 NORTHERN ITALY. ML 1.6 (GEN).88 18 32 38.4* 18.858 N 62.366 W 135 ? 8.8 12 NEAR COAST OF VENEZUELA. MD 3.2 (TRN).88 11 28 24.8% 46.611 N 2.852 E 16 G 8.4 6 FRANCE. ML 1.8 (LDG).88 11 42 47.3* 21.116 S 128.884 E 16 G 1.2 9 WESTERN AUSTRALIA88 12 84 32.8* 13.268 S 175.078 E 33 N 4.8 1.5 11 FIJI ISLANDS REGION88 12 38 39.9 41.548 S 174.368 E 32 4.3 1.2 23 COOK STRAIT, NEW ZEALAND. ML 4.3 (WEL).88 12 48 88.3? 62.88 N 3.65 E 10 G 1.4 7 NORWEGIAN SEA. MD 2.4 (BER).88 13 85 86.1% 26.176 S 29.284 E 5 G 8.7 5 REPUBLIC OF SOUTH AFRICA88 13 88 55.8% 33.627 S 71.595 W 33 N 8.3 9 NEAR COAST OF CENTRAL CHILE. MD 3.5 (SAN).88 14 83 38.9* 11.848 S 163.835 E 33 N 4.5 8.8 7 SOLOMON ISLANDS08 14 16 46.8% 48.284 N 23.423 E 10 G 8.7 5 GREECE. ML 1.6 (THE).88 14 21 36.4* 61.703 N 150.996 W 65 4.6 118 SOUTHERN ALASKA. <AEIC>. ML 4.3 (AEIC), 4.4 (PMR). Felt

(IV) ot Skwentno and Willow; (III) at Anchorage and Chugiok; (II) at Palmer.

68 14 42 12.4 15.938 N 97.964 W 16 G 4.6 4.1 1.2 46 NEAR COAST OF OAXACA, MEXICO88 15 38 88.4 8.948 S 123.944 E 80 D 5.0 1.3 55 FLORES REGION, INDONESIA88 15 39 47.1? 37.39 N 3.60 W 16 G 8.9 4 SPAIN. mbLg 2.7 (MDD).88 16 59 86.9 43.418 N 5.468 E 10 G 8.6 9 NEAR SOUTH COAST OF FRANCE. ML 2.5 (STR).

o 08 17 63 28.6 11.123 S 163.298 E 28 D 4.9 5.1 1.2 58 SOLOMON ISLANDS. Mw 5.6 (HRV).88 18 07 47.3? 35.83 S 78.54 W 18 G 1.1 13 CHILE-ARGENTINA BORDER REGION. MD 4.6 (SAN).08 18 21 49.9? 44.33 N 7.38 E 18 G 8.1 4 NORTHERN ITALY. ML 1.3 (GEN).08 18 38 39.5 38.781 N 143.719 E 12 4.4 1.1 26 OFF EAST COAST OF HONSHU, JAPAN08 19 13 21.9 36.632 N 51.882 E 33 N 4.4 8.9 29 NORTHERN IRAN. Felt strongly at Kelordosht. Also felt

ot Tehran.88 19 26 56.8? 33.85 N 34.58 E 10 G 0.7 7 EASTERN MEDITERRANEAN SEA. ML 3.3 (CSS).08 28 33 05.7«c 41.489 N 112.793 W 7 14 UTAH <SLC-P>. ML 3.4 (SLC). 3.2 (GS).88 20 38 59.8<c 34.930 N 116.856 W 8 17 SOUTHERN CALIFORNIA. <PAS-P>. ML 3.4 (PAS).88 21 18 88.8% 31.328 S 68.431 W 163 ? 1.8 6 SAN JUAN PROVINCE, ARGENTINA88 21 45 22.1& 62.638 N 147.322 W 48 43 CENTRAL ALASKA. <AEIC>. ML 2.6 (AEIC).

o 88 21 50 41.7 6.706 S 131.616 E 26 D 5.5 1.1 113 TAN IMBAR ISLANDS REG., INDONESIA. Mw 5.5 (HRV).08 22 17 22.6 3.498 S 146.694 E 33 N 4.9 4.6 1.3 31 BISMARCK SEA88 22 21 52.5% 41.073 N 24.544 E 18 G 0.2 5 GREECE-BULGARIA BORDER REGION. ML 2.2 (THE).88 23 47 26.0* 49.173 N 6.918 E 10 G 1.3 6 GERMANY. mbLg 2.7 (UCC).09 08 14 8B.3& 57.764 N 156.263 W 126 3.5 47 ALASKA PENINSULA. <AEIC>.89 08 48 55.9% 26.832 S 26.826 E 5 G 8.9 8 REPUBLIC OF SOUTH AFRICA. ML 2.6 (PRE).89 80 51 39.5 38.355 N 28.877 E 18 G 8.7 13 TURKEY. MD 3.3 (ISK).

o 09 01 29 14.6 55.678 S 146.999 E 18 G 5.5 6.0 1.2 132 WEST OF MACOUARIE ISLAND. Mw 6.2 (HRV).09 01 50 49.5? 36.98 N 4.71 W 10 G 8.1 4 STRAIT OF GIBRALTAR. mbLg 2.3 (MDD).09 02 28 18.4% 42.305 N 18.776 E 18 G 8.4 9 NORTHWESTERN BALKAN REGION. ML 1.7 (TTG).09 82 40 51.8 18.516 S 169.898 E 226 4.8 1.0 73 VANUATU ISLANDS09 04 40 31.3 51.376 N 15.823 E 10 G 0.5 21 POLAND. ML 3.6 (GRF), 3.5 (VIE).09 84 45 58.8 39.892 S 73.247 W 33 N 5.3 1.1 57 NEAR COAST OF CENTRAL CHILE09 05 87 28.5* 44.169 N 147.983 E 82 * 4.5 1.1 27 KURIL ISLANDS89 05 28 59.3 38.318 N 143.626 E 22 5.8 8.8 63 OFF EAST COAST OF HONSHU, JAPAN89 85 59 28.1* 18.923 S 164.446 E 25 D 4.4 1.3 9 SANTA CRUZ ISLANDS REGION89 06 10 23.6 37.762 N 20.884 E 10 G 3.7 1.4 36 IONIAN SEA. ML 3.9 (ATH). 3.9 (THE).

o 09 07 45 43.6 59.624 S 25.709 W 33 N 5.7 6.1 1.1 162 SOUTH SANDWICH ISLANDS REGION. Mw 6.3 (HRV). Ms 6.1(BRK).

09 07 52 11.1? 59.61 S 25.70 W 33 N 5.1 1.2 27 SOUTH SANDWICH ISLANDS REGION89 88 18 21.1 59.681 S 25.664 W 33 N 5.4 8.9 113 SOUTH SANDWICH ISLANDS REGION09 88 57 28.6* 37.856 N 28.881 E 10 G 1.1 8 IONIAN SEA. ML 3.5 (ATH).89 09 36 51.5* 17.518 N 94.618 W 159 ? 3.2 1.1 16 CHIAPAS, MEXICO09 09 41 23.3 39.187 N 28.796 E 9 8.9 36 TURKEY. MD 3.8 (ISK), 3.8 (ATH).89 18 82 09.0* 59.879 S 25.699 W 33 N 5.2 4.8 1.2 41 SOUTH SANDWICH ISLANDS REGION89 11 88 38-3 63.542 N 151.844 W 18 G 1.1 18 CENTRAL ALASKA. ML 2.9 (PMR).09 12 20 15.2 42.677 N 111.422 W 5 G 8.8 18 EASTERN IDAHO. ML 3.0 (GS).89 12 23 21.1 49.158 N 6.901 E 18 G 8.7 13 GERMANY. ML 2.8 (STR). MD 2.8 (UCC).09 12 59 35.6 19.785 N 38.704 E 10 G 4.7 4.4 8.8 33 RED SEA89 13 52 09.2* 42.839 N 142.040 E 119 ? 4.1 1.8 9 HOKKAIDO, JAPAN REGION09 13 52 45.3 37.798 N 28.789 E 17 3.8 1.1 22 IONIAN SEA. ML 3.8 (ATH). 3.5 (THE).09 14 17 05.8 45.616 N 26.392 E 152 4.2 1.8 67 ROMANIA. Felt (III) in the Vrancea region and at

Bucharest. Also felt (III) at Chisinau, Moldova.89 14 22 46.2? 7.93 S 128.89 E 282 ? 8.7 6 BANDA SEA89 14 42 87.6* 59.724 S 25.409 W 33 N 4.9 4.4 1.5 18 SOUTH SANDWICH ISLANDS REGION89 15 19 53.8% 39.373 N 28.991 E 10 G 0.7 6 TURKEY. MD 2.7 (ISK).09 15 28 43.4«c 63.287 N 149.437 W 92 2.9 73 CENTRAL ALASKA. <AEIC>.89 15 38 18.5% 39.186 N 28.803 E 5 G 0.7 8 TURKEY. MD 3.0 (ISK).09 16 35 45.9ft 62.036 N 149.865 W 50 47 CENTRAL ALASKA. <AEIC>. ML 2.5 (AEIC).09 16 59 16.1* 17.538 N 61.885 W 33 N 0.6 8 LEEWARD ISLANDS. ML 3.4 (FDF). MD 3.0 (TRN).09 17 03 45.8% 45.689 N 5.300 E 18 G 8.8 7 FRANCE. ML 2.2 (LDG).89 17 05 41.1% 26.441 S 27.400 E 5 G 125 REPUBLIC OF SOUTH AFRICA. ML 2.2 (PRE).09 17 32 46.9? 60.31 N 4.19 E 10 G 08 5 SOUTHERN NORWAY. MD 1.6 (BER).09 17 34 26.9% 40.678 N 23.424 E 10 G 057 GREECE. ML 2.8 (THE).89 17 36 17.9& 60.023 N 153.261 W 128 38 SOUTHERN ALASKA. <AEIC>.

PAGE 7 MAR 1993

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MAR 1993 PAGE 8

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PAGE 9 MAR 1993

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MAR 1993 PAGE 10

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FRANCE. ML 1.7 (LOG).TURKEY. MD 3.6 (ISK), 3.5 (ATH).GREECE. ML 2.5 (THE).UNITED KINGDOM. ML 2.4 (BGS).SAN JUAN PROVINCE. ARGENTINACENTRAL EAST PACIFIC RISE ,MENDOZA PROVINCE. ARGENTINA {CENTRAL ALASKA. <AEIC>. ML 2.9 (AEIC), 3.1 (PMR).MONGOLIACENTRAL MID-ATLANTIC RIDGECENTRAL CALIFORNIA. <GM-P>. MD 3.5 (GM). ML 3.2 (PAS),3.G (6RK). Mo-9.8»ie**13 Nm (BRK).KENAI PENINSULA, ALASKA. <AElC>. ML 3.3 (AElC). 3.1(PMR).SOUTH OF KERMADEC ISLANDSRED SEA. Mw 5.0 (HRV). MD 4.7 (RYD).RED SEAFOX ISLANDS. ALEUTIAN ISLANDSTURKEY. MD 2.5 (ISK).SUM6AWA REGION. INDONESIANEAR COAST OF GUERRERO. MEXICOREPUBLIC OF SOUTH AFRICA. ML 2.5 (PRE).TURKEY. MD 2.7 (ISK).AUSTRIA. ML 2.8 (VIE). 2.6 (BRA). Probable explosion.Felt (IV) ot Wiener Neustadt.SAN JUAN PROVINCE, ARGENTINANORTHERN ITALY. ML 1.5 (GEN).RED SEA. MD 4.7 (RYD).ANDAMAN ISLANDS, INDIACENTRAL ALASKA. <AEIC>.TURKEY. MD 2.8 (ISK).POLANDROMAN I ANORTHERN ITALY. ML 1.9 (GEN).NORTHERN ITALY. ML 1.5 (GEN).BANDA SEACHILE-ARGENTINA BORDER REGION. MD 3.2 (SAN).SOLOMON ISLANDSOFF W. COAST OF S. ISLAND, N.Z.CHILE-ARGENTINA BORDER REGION. MD 3.2 (SAN).CENTRAL CALIFORNIA. <BRK>. ML 2.8 (BRK). Felt atGi Iroy.SOUTH OF FIJI ISLANDSSOUTHERN IRANFRANCE. ML 1.6 (GEN).SPAINNORTH ISLAND, NEW ZEALANDVOLCANO ISLANDS REGIONCENTRAL ALASKA. <AEIC>. Felt (III) ot Skwentno and (IIat TaIkeetna.PYRENEES. ML 2.5 (LDG).AFGHANISTAN-TAJIKISTAN BORD REG.NORTHERN SUMATERA. INDONESIAOFF EAST COAST OF HONSHU. JAPANPYRENEES. ML 1.0 (STR).RED SEA. MD 4.8 (RYD).CENTRAL ALASKA. <AEIC>. ML 2.5 (AEIC), 2.7 (PMR).FRANCE. ML 1.9 (LDG).NORTHERN COLOMBIAHOKKAIDO, JAPAN REGION. Mw 5.1 (HRV).NORTHERN NORWAY. MD 2.8 (BER).JAWA. INDONESIACHESAPEAKE BAY REGION. mbLg 2.7 (GS). Felt in theColumbia-Laurel area, Maryland.RED SEA. MD 4.5 (RYD).NEAR SOUTH COAST OF FRANCE. ML 3.4 (GEN), 3.2 (LDG),3.1 (STR). MD 2.8 (LJU).SOUTH OF KERMADEC ISLANDSNORTHERN ALASKA. <AEIC>. ML 3.5 (AEIC), 3.3 (PMR).TURKEY. MD 2.7 (ISK).KERMADEC ISLANDS REGIONRED SEA. MD 4.7 (RYD).FRANCE. ML 1.6 (LDG).NEAR SOUTH COAST OF FRANCE. ML 2.8 (STR).UTAH. ML 3.0 (GS). 3.3 (SLC).SOUTHERN ALASKA. <AEIC>. ML 2.9 (AElC). 3.5 (PMR). FeI(III) at Willow. (II) at Polmer and (I) ot Eagle RiverOFF COAST OF CENTRAL AMERICA. MD 4.8 (GCG).FRANCE. ML 2.0 (LDG).TURKEY. MD 2.6 (ISK).NORTHERN ITALY. ML 1.5 (GEN).TURKEY. MD 3.0 (ISK).UNITED KINGDOM. ML 2.3 (BGS).ANDREANOF ISLANDS. ALEUTIAN IS.SOUTHERN NORWAY. MD 1.6 (BER).ARMENIA-AZERBAIJAN-IRAN BORD REG. Felt (V) in theTobr i z-Suf i an-Mar and area. Iran. Also felt (Ml) atGor i s, Armeni a.MACOUARIE ISLANDS REGIONOFF COAST OF CENTRAL CHILE. MD 3.8 (SAN).AEGEAN SEA. ML 2.5 (THE).NEAR COAST OF NORTHERN CHILE. Mw 6.7 (GS). 6.5 (HRV).Ms 5.9 (BRK). Mo-2.2»10»»19 Nm (PPT). Some damage (VI)

PAGE 1 1 MAR 1993

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MAR 1993 PAGE 12

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SUMBA REGION, INDONESIANORTHERN ITALY. ML 1.4 (GEN).REPUBLIC OF SOUTH AFRICA. ML 2.7 (PRE).NORTHWESTERN BALKAN REGION. ML 2.3 (ZAG). Felt in theLudbreg area, Croatia.CHILE-ARGENTINA BORDER REGION. MD 3.8 (SAN).NORTHWEST OF RYUKYU ISLANDSNORTHWESTERN BALKAN REGION. MD 2.7 (TTG). ML 2.4 (TIR).NORTHERN ITALY. ML 1.9 (GEN), 1.6 (LOG).NEAR COAST OF NORTHERN CALIF. <BRK>. ML 3.4 (8RK), 3.2(GS). Felt at Petrolio.REPUBLIC OF SOUTH AFRICA. ML 2.6 (PRE).TURKEY. MD 3.2 (ISK).

MD 2.9 (LJU)ML 3.8 (GRF)

ML 2.5 (ZAG). 3.7 (ZAG),

Felt in the Ludbreg

ML 3.5 (BRA), 3.4 (VIE),

NORTHWESTERN BALKAN REGION.NORTHWESTERN BALKAN REGION.3.5 (BRA). 3.4 (VIE). MD 3.5 (TRl)area, Croat i a.SOUTH OF FIJI ISLANDSNORTHWESTERN BALKAN REGION.3.4 (ZAG). MD 3.4 (TRl).ETHIOPIA. Mw 5.6 (HRV).NORTHERN ITALY. ML 1.8 (GEN).SICILY. MD 3.3 (ROM).NORTHERN ITALY. ML 1.3 (GEN).NORTHWESTERN BALKAN REGION. ML 2.4 (ZAG).RED SEA. MD 4.0 (RYD).GREECETURKEY. MD 2.5 (ISK).NORTHERN ITALY. ML 2.1 (GEN).WESTERN CAROLINE ISLANDSNORTHWESTERN BALKAN REGION. ML 3.2 (ZAG), 2.9 (VIE). MD3.1 (TRl).ROMANIAOFF COAST OF CENTRAL CHILE. Mw 5.6 (HRV). Ms 5.2 (BRK).Depth from broadband displacement seismagrams.NORTHWESTERN BALKAN REGION. ML 1.6 (TTG).NEAR COAST OF CENTRAL CHILE. MD 3.5 (SAN).OFF E. COAST OF N. ISLAND, N.Z.NORTHERN ITALY. ML 1.7 (GEN).REPUBLIC OF SOUTH AFRICA. ML 2.8 (PRE).NORTHERN ITALY. ML 2.1 (GEN), 1.6 (LOG).FRANCE. ML 1.8 (GEN).NEAR COAST OF VENEZUELANORTH ISLAND, NEW ZEALANDNORTHERN ITALY. ML 1.4 (GEN).TURKEY. MD 2.8 (ISK).TURKEY. MD 2.7 (ISK).TURKEY. MD 2.7 (ISK) .PYRENEES. ML 2.5 (LOG).KYRGYZSTAN. Felt (VI) at KyzyI-Dzhor. Also felt (V) atNamangan and (II) at Tashkent, Uzbekistan.CYPRUS REGION. ML 4.4 (CSS).AUSTRIA. ML 2.6 (VIE). MD 2.4 (TRl).TURKEY. MD 2.6 (ISK).REPUBLIC OF SOUTH AFRICA. ML 2.6 (PRE).CENTRAL ALASKA. <AEIC>.POLAND. ML 4.4 (WAR), 4.3 (GRF), 4.1 (VIE), 3.9 (FUR).CENTRAL ALASKA. <AEIC>.NORTHERN ITALY. ML 2.0 (LOG).SAN JUAN PROVINCE, ARGENTINABULGARIANEAR COAST OF CENTRAL CHILE. MD 4.0 (SAN).MYANMARMONTANA. <BUT-P>. ML 3.6 (BUT), 3.5 (GS). Felt (V) atNarris and (III) at Pony. Also felt at Bear Trap HatSpri ngs.MONTANA. <BUT-P>. ML 2.3 (BUT). Felt at Narris.TURKEY. MD 2.6 (ISK) .NORTHERN ITALY. ML 2.2 (GEN), 2.0 (LOG).MONTANA. <BUT-P>. MD 1.7 (BUT). Felt at Narris.MONTANA. <BUT-P>. MD 1.9 (BUT). Felt at Norris.NORTHERN MOLUCCA SEAADRIATIC SEA. MD 4.1 (TRl), 3.6 (TTG). ML 3.9 (VIE),3.7 (ROM), 3.6 (TIR).VANUATU ISLANDSSOUTHERN ALASKA. <A£IC>. ML 3.1 (AEIC), 3.0 (PMR).SOUTH OF FIJI ISLANDSSOUTHEAST OF SHIKOKU, JAPANRED SEA. MD 3.8 (RYD).JAWA, INDONESIAMONTANA. <BUT-P>. ML 2.8 (BUT)TURKEY. MD 2.6 (ISK).GREECESAN JUAN PROVINCE, ARGENTINAGREECENORTHERN ITALY. MD 3.1 (LJU),3.0 (LOG), 3.0 (VIE).GERMANYALASKA PENINSULA. <AElC>. ML 2.8 (AEIC).SOUTHERN ALASKA. <AEIC>. Felt (III) at at Homer.RED SEARED SEAFRANCE. ML 1.5 (LOG).

Felt at Norris.

2.9 (FlR), 2.8 (ROM). ML

PAGE 13 MAR 1993

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CELEBES SEASOUTHWEST OF SUMATERA, INDONESIANORTHERN COLOMBIATURKEY-IRAN BORDER REGIONSTRAIT OF GIBRALTAR. mbLg 2.9 (MOD).CHILE-ARGENTINA BORDER REGION. MD 3.7 (SAN).MONTANA. <BUT-P>. MD 2.5 (BUT). Felt at Norrls.TURKEY. MD 3.6 ( ISK) .AEGEAN SEAGERMANY. MD 2.7 (UCC) . ML 2.6 (LOG), 2.1 (BNS).FOX ISLANDS, ALEUTIAN ISLANDSAEGEAN SEACOOK STRAIT, NEW ZEALANDTURKEY. MD 2.7 ( ISK) .GREECE-BULGARIA BORDER REGIONLEEWARD ISLANDS. ML 2.9 (FDF).NEAR COAST OF CENTRAL CHILE. MD 3.5 (SAN).NEAR COAST OF CENTRAL CHILE. MD 4.9 (SAN). Felt (IV) otOval le.NEAR EAST COAST OF KAMCHATKAFLORES REGION, INDONESIASOUTHERN CALIFORNIA. <PAS-P> . ML 2.9 (PAS).NEAR SOUTH COAST OF FRANCE. ML 2.6 (STR) .GREECESAN JUAN PROVINCE. ARGENTINABANDA SEATURKEY. MD 4.2 (ISK), 4.1 (ATH). ML 4.1 (THE). Felt inthe Ba I i kes i r-Bursa- I s tanbu I area.TURKEY. ML 4.0 (THE). MD 3.9 (ISK). Felt in theBo I i kes i r-Burso-l stonbu I area.ASCENSION ISLAND REGIONTURKEY. ML 4.5 (THE). MD 4.2 (ISK). Felt in theBo I i kes i r-Bursa-l s tonbu I area.TURKEY. MD 3. 1 ( ISK) .NEAR EAST COAST OF HONSHU, JAPANAUSTRIA. MD 2.5 (LJU) .NEAR COAST OF CENTRAL CHILE. MD 3.7 (SAN).WESTERN MEDITERRANEAN SEA. ML 3.4 (LOG).TURKEY. MD 2.8 ( I SK ) .TURKEY. MD 2.9 (ISK).TURKEY . MD 2.6 ( ISK) .NEAR COAST OF NORTHERN CHILETURKEY. MD 2.7 ( ISK) .GREECENORTHERN ITALY. ML 2.3 (GEN).CALIFORNIA-NEVADA BORDER REGION. <GM-P> . MD 3.0 (GM).ML 3. 1 (BRK) . 2.8 (GS) .OAXACA, MEXICOSAN JUAN PROVINCE, ARGENTINATURKEY. MD 2.7 ( ISK) .TURKEY . MD 2.6 ( ISK) .TURKEY. MD 2.6 ( ISK) .TURKEY. MD 2.9 ( ISK) .TURKEY . MD 3.1 ( ISK) .REPUBLIC OF SOUTH AFRICA. ML 2.2 (PRE).NORTH ISLAND, NEW ZEALAND. Felt (IV) in southern NorthIsland. Also felt at Nelson, South Island.NORTH OF HALMAHERA, INDONESIAGREECE. Mw 5.8 (HRV). MD 5.6 (TTG), 5.6 (VIE), 5.3(ATH). Ms 5.4 (BRK). Felt strongly at Aiyion, Amfissa,Iteo, Korinthos, Patroi and Xilokostron. Also felt atAthens, Kalamai, Lamia, Loriso and Tripolis.NORTH ISLAND, NEW ZEALANDNEAR SOUTH COAST OF FRANCE. ML 1 . 1 (GEN).SOUTHERN CALIFORNIA. <PAS-P>. ML 2.5 (PAS). Felt.UNIMAK ISLAND REGIONKOMANDORSKY ISLANDS REGIONNEAR COAST OF GUERRERO, MEXICOREPUBLIC OF SOUTH AFRICA. ML 2.5 (PRE).CHILE-ARGENTINA BORDER REGIONKOMANDORSKY ISLANDS REGIONSAN JUAN PROVINCE, ARGENTINAVANCOUVER ISLAND REGION. <PGC-P>. ML 3.1 (PGC).OFF EAST COAST OF HONSHU, JAPANCHILE-ARGENTINA BORDER REGION. MD 3.6 (SAN).FIJI ISLANDS REGION. MD 4.9 (SVA). Felt on the LouI s I onds .MYANMAR-IND IA BORDER REGION. Felt at Shillong, India.WESTERN IDAHO. <BUT-P>. MD 3.1 (BUT). Felt (IV) otWallace and (III) at Silverton. Also felt at Kellogg.TURKEY. MD 3. 1 ( ISK) .SICHUAN, CHINAOFF COAST OF NORTHERN CHILEGREECE-ALBANIA BORDER REGION. ML 3.6 (TTG), 3.5 (TIR).BANDA SEARED SEA. MD 4.0 (RYD).NEAR EAST COAST OF HONSHU, JAPANRED SEA. MD 3.8 (RYD).NEAR COAST OF NORTHERN CHILE. Felt (III) at Copiopo.NEAR COAST OF NORTHERN CHILE. Mw 6.0 (HRV). Felt (IV)ot Copiopo.SOUTH OF SUMBAWA, INDONESIAFIJI ISLANDS REGION

MAR 1993 PAGE 14

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NEAR COAST OF CENTRAL CHILESOUTHERN CALIFORNIA. <PAS-P>. ML 2.8 (PAS).NEAR SOUTH COAST OF FRANCE. ML 1.8 (LOG), 1.5 (GEN).NEAR SOUTH COAST OF FRANCE. ML 2.7 (STR).CENTRAL ALASKA. <AEIC>. ML 2.5 (AEIC). 2.9 (PMR).GREECE-BULGARIA BORDER REGIONNEAR COAST OF NORTHERN CHILENEAR EAST COAST OF HONSHU, JAPAN. Mw 5.6 (HRV).NEAR EAST COAST OF HONSHU, JAPANCOOK STRAIT, NEW ZEALAND. ML 3.9 (WEL). Felt (III) atWe I I i ngton.NEAR COAST OF NORTHERN CHILE.AEGEAN SEANEAR COAST OF NORTHERN CHILE.NEW BRITAIN REGION, P.N.G.PYRENEES. ML 2.5 (LDG). mbLg 2.5 (MOD).GREECEGULF OF ALASKA. ML 3.0 (AEIC).TURKEY. MD 3.3 (ISK).CHILE-ARGENTINA BORDER REGION. MD 3.9 (SAN).SOUTHERN SUMATERA, INDONESIARED SEANEAR COAST OF CENTRAL CHILE. MD 3.6 (SAN).SOUTHERN ALASKA. <AEIC>. Felt (IV) at Homer, (II) atPort Graham and (I) ot Eagle River.KERMADEC ISLANDS REGIONNEAR COAST OF CHIAPAS, MEXICOCHILE-ARGENTINA BORDER REGION. MD 3.7 (SAN).COOK STRAIT, NEW ZEALANDBULGARIATONGA ISLANDS REGIONREPUBLIC OF SOUTH AFRICASOUTHERN NORWAY. MO 1.6 (BER).REPUBLIC OF SOUTH AFRICA. mbLg 3.3 (BUL).NORTH ISLAND, NEW ZEALANDCHILE-ARGENTINA BORDER REGION. MD 3.9 (SAN).ANDAMAN ISLANDS, INDIA. Mw 5.3 (HRV).NEAR COAST OF NORTHERN CHILE.Cop i opa.NORTHERN MOLUCCA SEANORTHERN COLOMBIAREPUBLIC OF SOUTH AFRICA. ML 3.2 (PRE). mbLg 3.1 (BUL)TONGA ISLANDSNORTH OF SEVERNAYA ZEMLYATAJIKISTANSOUTHERN CALIFORNIA. <PAS-P>. ML 3.6 (PAS), 3.4 (GS).Felt (IV) ot Daggett. Also felt at Barstow and Yermo.GREECEPOLAND. ML 3.4 (WAR).JUJUY PROVINCE, ARGENTINAEASTERN CAUCASUSREPUBLIC OF SOUTH AFRICA. ML 3.3 (PRE). mbLg 3.2 (BUL).RYUKYU ISLANDSGREECE-ALBANIA BORDER REGIONSOUTHERN CALIFORNIA. <PAS-P>. ML 2.8 (PAS).MARIANA ISLANDSNEAR EAST COAST OF HONSHU, JAPANNEAR EAST COAST OF HONSHU, JAPANCHILE-ARGENTINA BORDER REGION. MD 3.6 (SAN).FRANCE. ML 1.8 (LDG).MARIANA ISLANDS REGIONSOUTHERN ALASKA. <AEIC>.NEAR COAST OF CENTRAL CHILE. MD 3.6 (SAN).NORTHWESTERN BALKAN REGION. MD 3.4 (LJU), 2.8 (TTG).SOUTHERN ALASKA. <AEIC>.GREECERED SEA. MD 4.5 (RYD).SOUTH OF FIJI ISLANDSRED SEANEAR COAST OF CENTRAL CHILE. MD 3.9 (SAN).AEGEAN SEABONIN ISLANDS REGIONCARLSBERG RIDGE. Mw 5.2 (HRV).NORTHERN COLOMBIASOUTHERN CALIFORNIA. <PAS-P>. ML 3.8 (PAS), 4.0 (8RK),3.5 (GS). Felt (V) at Fantana; (IV) at Lama Lindo,March Air Force Base and Redlands; (III) ot Blue Joy,Colton, Highland, Perris, Rialto, Riverside andYuca i po.SOUTHERN ALASKA. <AEIC>.TURKEY. MD 2.8 (ISK).AEGEAN SEASOUTH SANDWICH ISLANDS REGION. Mw 6.3 (GS), 6.3 (HRV).Mo-7.6*10**18 Nm (PPT). Depth from broadbanddisplacement seismograms.SOUTHERN SUMATERA, INDONESIABONIN ISLANDS REGIONOAXACA, MEXICO. Felt in the state of Ooxaco.FOX ISLANDS. ALEUTIAN ISLANDSPORTUGAL. mbLg 2.9 (MOD).SOUTH OF MARIANA ISLANDSGREECENORTHWESTERN BALKAN REGION. ML 1.5 (TTG).

PAGE 15 MAR 1993

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SOLOMON ISLANDSLUZON, PHILIPPINE ISLANDSTURKEY. MD 2.7 (ISK).REPUBLIC OF SOUTH AFRICA. ML 2.7 (PRE).SOUTH ISLAND. NEW ZEALANDGREECE-BULGARIA BORDER REGIONTURKEY. MD 2.4 ( ISK).SPAIN. mbLg 2.3 (MDD).SOUTH ISLAND, NEW ZEALAND. ML 3.8 (WEL).OFF COAST OF CENTRAL AMERICA.Felt (II) at San Salvador, El Salvador.XIZANG. Mw 6.2 (HRV). Ms 5.8 (BRK). Mo-4.1 * 10««18 Nm(PPT). At least two people killed, 3 seriously injuredand damage in Ngamring County. Felt at Xigaze. Alsofelt at Kathmandu, Nepal. Depth from broadbanddisplacement seismograms.

ML 2.1 (GEN).ML 1.8 (GEN).ML 2.0 (SKO).MD 3.5 (SAN).

NEAR COAST OF MICHOACAN, MEXICO. Felt olong the coast of Michoacan.JAMAICA REGION. MD 2.4 (HOJ). Felt at Cherry Gardens. MINAHASSA PENINSULA. SULAWESI CENTRAL ITALYMEXICO-GUATEMALA BORDER REGION. MD 4.4 (GCG). AEGEAN SEASAN JUAN PROVINCE. ARGENTINACENTRAL ITALY. MD 3.6 (TRI), 3.4 (ROM). ML 3.2 (LOG). VANUATU ISLANDS SAN JUAN PROVINCE, ARGENTINA AEGEAN SEAXIZANG. Mw 5.2 (HRV). Felt at Xigaze. SOUTH OF FIJI ISLANDSMENDOZA PROVINCE, ARGENTINA. MD 4.7 (SAN). MINAHASSA PENINSULA. SULAWESI SPAINOAXACA, MEXICO NORTHWESTERN BALKAN REGION NORTHWESTERN BALKAN REGION. 2.0 (LJU)NORTHWESTERN BALKAN REGION. PORTUGAL. mbLg 3.0 (MDD). NEAR COAST OF OAXACA, MEXICO TAJIKISTAN SOLOMON ISLANDS NEAR COAST OF CENTRAL CHILE. NORTHWESTERN BALKAN REGION. AEGEAN SEA. MD 3.7 (ISK). SOUTH OF JAWA, INDONESIA KOMANDORSKY ISLANDS REGION TURKEYAEGEAN SEA. MD 3.5 (ISK). CENTRAL ITALY. MD 3.2 (FIR). ML 2.8 FIJI ISLANDS REGION. Mw 6.3 (GS), 6. (BRK). Depth from broadband displacement seismogroms. AEGEAN SEA. MD 3.6 (ISK). CHILE-BOLIVIA BORDER REGION AFGHANISTAN-TAJIKISTAN BORD REG. REPUBLIC OF SOUTH AFRICA. ML 3.0 (PRE). REPUBLIC OF SOUTH AFRICA. ML 3.0 (PRE). CENTRAL ITALY. MD 3.3 (FIR). ML 2.7 (LDG). SPAIN. mbLg 2.9 (MDD). NEW GUINEA. PAPUA NEW GUINEA SPAIN. mbLg 2.9 (MDD). SPAIN. mbLg 3.3 (MDD). NEAR COAST OF CHIAPAS, MEXICO NEAR COAST OF ECUADOR DODECANESE ISLANDS. MD 3.3 (ISK). CENTRAL ITALY VANUATU ISLANDS SOUTHERN ALASKA. <AElC>.REPUBLIC OF SOUTH AFRICA. ML 3.1 (PRE). NORTHERN ITALY. ML 2.1 (GEN). NORTHERN ITALY. ML 2.1 (GEN), 1.9 (LDG). CHILE-ARGENTINA BORDER REGION. MD 4.0 (SAN). FRANCE. ML 1.8 (LDG). OFF E. COAST OF N. ISLAND. N.Z. NORTH ISLAND. NEW ZEALAND TIMOR SEANORTHWESTERN BALKAN REGION. ML 1.7 (SKO). VANUATU ISLANDS FRANCE. ML 1.9 (GEN).REPUBLIC OF SOUTH AFRICA. ML 3.4 (PRE). CHILE-ARGENTINA BORDER REGION NEAR COAST OF NORTHERN CALIF. <BRK>. ML 3.2 NORTHERN ITALY. ML 2.8 (VIE), 2.5 (LDG). NORTHWESTERN BALKAN REGION. MD 3.7 (TRI). 3.3 (VIE). Felt at Sinj, Imotski and Mokarska, Croatio FRANCE. ML 1.8 (GEN). TURKEY. MD 2.8 ( ISK).REPUBLIC OF SOUTH AFRICA. ML 3.2 (PRE). mbLg 3.0 (8UL) NEW BRITAIN REGION, P.N.G.

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MAR 1993 PAGE 16

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NORTHERN ITALY. ML 2.0 (GEN).ALBANIA. ML 2.8 (SKO), 2.6 (TTG).CHILE-BOLIVIA BORDER REGIONGUERRERO, MEXICONORTHERN CHILENEAR COAST OF NORTHERN CALIF. <BRK>. ML 3.1 (BRK).FRANCE. ML 2.3 (SIR).KODIAK ISLAND REGION. <AEIC>FRANCE. ML 2.8 (LDG). 2.4 (GEN).FOX ISLANDS, ALEUTIAN ISLANDS. ML 4.6 (PMR).NEAR COAST OF NICARAGUAPUERTO RICO REGIONKERMADEC ISLANDS REGIONVOLCANO ISLANDS REGIONJAWA, INDONESIAKURIL ISLANDSREPUBLIC OF SOUTH AFRICA. ML 3.1 (PRE). mbLg 2.9 (BUL)MEXICO-GUATEMALA BORDER REGION.SAN JUAN PROVINCE. ARGENTINACALIFORNIA-NEVADA BORDER REGION.KURIL ISLANDSSAN JUAN PROVINCE, ARGENTINANEAR COAST OF CENTRAL CHILE. MD 3.7 (SAN).GREECEEASTERN NEW GUINEA REG., P.N.G.CHILE-ARGENTINA BORDER REGION. MD 4.2 (SAN).TURKEY. MD 3.4 (ISK).CYPRUS REGION. Mw 5.4 (HRV). MD 5.1 (CSS). ML 4.9(JER). Felt (IV) at Ayia Napa and (III) at Nicosia andLarnaca. Also felt at Afula, Haifa and Jerusalem,IsraeI .SOUTHERN NORWAY. MD 2.3 (BER).COOK STRAIT, NEW ZEALAND. ML 3.7 (WEL).VIRGIN ISLANDSCENTRAL ITALY. MD 3.2 (FIR).SOUTHERN CALIFORNIA. <PAS-P>. ML 3.3 (PAS). 3.2 (GS).GERMANY. ML 1.9 (STR).KURIL ISLANDS. Mw 5.4 (HRV).SOUTHERN NORWAY. MD 2.5 (BER).SOUTHERN ALASKA. <AEIC>.SOUTHERN CALIFORNIA. <PAS-P>.Pel t .CHILE-ARGENTINA BORDER REGION.NORTH ISLAND, NEW ZEALANDCENTRAL ALASKA. <AEIC>. Felt (ill) at Skwentna.ANDREANOF ISLANDS, ALEUTIAN IS. Mw 5.7 (HRV). Ms 5.1(BRK). Felt (IV) an Adak and Atka.JUJUY PROVINCE, ARGENTINAREPUBLIC OF SOUTH AFRICA. ML 3.6 (PRE).GERMANY. ML 3.8 (GRF). 3.7 (LDG). 3.6 (BNS). Felt atIbbenburen, WesterkappeIn, Mettingen. Recke andGeor gs Marienhutte.NORTHERN ITALY. ML 3.1 (LDG)REPUBLIC OF SOUTH AFRICA. ML 2.6 (PRE).SAN JUAN PROVINCE, ARGENTINA. MD 4.2 (SAN). Felt (III)a t San J uan.RED SEA. Mw 5.1 (HRV). MD 4.8 (RYD).NEAR SOUTH COAST OF FRANCE. ML 2.7 (STR).LOYALTY ISLANDS REGIONLEEWARD ISLANDS. MD 3.0 (TRN). ML 2.8 (FDF).MARIANA ISLANDS REGIONALBANIA. ML 2.9 (T IR) .POLAND. ML 3.6 (GRF), 3.4 (VIE).GREECE. MD 3.0 (ATH).RED SEA. Mw 5.2 (HRV). MD 5.1 (RYD).NEW BRITAIN REGION. P.N.GSOUTHERN ALASKA. <AEIC>GERMANY. ML 2.7 (STR). MD 2.7 (UCC).NEAR EAST COAST OF KAMCHATKAALBANIA. MD 3.1 (ATH). ML 3.1 (TTG). 2.9 (TlR).SPAINRED SEAROMANIAIRIAN JAYA REGION. INDONESIAREPUBLIC OF SOUTH AFRICA. ML 2.2 (PRE).MOROCCO. mbLg 4.4 (MOD).LA RIOJA PROVINCE, ARGENTINASTRAIT OF GIBRALTAR. mbLg 2.8 (MOD).FRANCE. ML 3.3 (LDG), 2.6 (STR).BANDA SEASOUTH ISLAND. NEW ZEALANDMOROCCO. mbLg 3.2 (MDD).STRAIT OF GIBRALTAR. mbLg 2.6 (MDD).KURIL ISLANDSSTRAIT OF GIBRALTAR. mbLg 3.3 (MOD).IRIAN JAYA REGION, INDONESIANORTH ISLAND, NEW ZEALAND. ML 3.8 (WEL).SOUTHERN ALASKA. <AEIC>. ML 3.3 (AElC), 3.3 (PMR).VENEZUELAWINDWARD ISLANDS. MD 3.0 (TRN).TURKEY. MD 2.8 (ISK).TURKEY. MD 2.7 (ISK) .GREECE

2.9 (VIE).

Mw 5.4 (HRV). ML 3.1 (AElC). 3.3 (PGC).

PAGE 17 MAR 1993

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SOUTHWEST OF SUMATERA, INDONESIABANDA SEAMINAHASSA PENINSULA, SULAWESINEW BRITAIN REGION, P.N.G.REPUBLIC OF SOUTH AFRICA. ML 2.3 (PRE).FRANCE. ML 1.3 (GEN).CENTRAL CALIFORNIA. <PAS-P>. ML 2.8 (PAS).NEAR SOUTH COAST OF FRANCE. ML 2.5 (STR).WESTERN CAROLINE ISLANDSNORTHERN ITALY. ML 2.0 (GEN). 2.6 (LDG).ALBANIA. ML 2.9 (TTG).RED SEA. MD 4.1 (RYD).SOUTHERN ALASKA. <AEIC>.KURIL ISLANDSIRIAN JAYA REGION. INDONESIASTRAIT OF GIBRALTAR. mbLg 3.1 (MOD). Felt (III) on theChoforinas Islands. Spain.SOUTHERN PERUGREECESTRAIT OF GIBRALTARXIZANGFRANCE. ML 1.9 (LDG).BANDA SEANEW MEXICO. mbLg 3.6 (GS). MD 2.7 (SNM). Felt (II) atCuervo and Newkirk.SOUTHERN CALIFORNIA. <PAS-P>. ML 2.6 (PAS). Felt.NORTHERN YUKON TERRITORY, CANADA. <AEIC>. ML 3.9(AEIC). 3.1 (PGC).NORTHERN YUKON TERRITORY. CANADA. <AEIC>. ML 2.9(AEIC).AEGEAN STEALEEWARD ISLANDS. ML 2.8 (FDF).POLANDSOUTH ISLAND. NEW ZEALANDLEEWARD ISLANDS. MD 3.2 (TRN). ML 3.6 (FDF).LEEWARD ISLANDS. ML 2.9 (FDF).LEEWARD ISLANDS. ML 2.9 (FDF).LEEWARD ISLANDS. ML 2.4 (FDF).MEXICO-GUATEMALA BORDER REGION. MD 4.1 (GCG).POLAND. MG 3.3 (WAR).PUERTO RICO REGIONOFF COAST OF PERUNEAR COAST OF NORTHERN CALIF. <BRK>. ML 3.7 (BRK).OFF COAST OF CHIAPAS, MEXICONORTHERN ITALY. ML 1.9 (GEN).OFF E. COAST OF N. ISLAND. N.Z.OFF E. COAST OF N. ISLAND, N.Z.SAN JUAN PROVINCE, ARGENTINAGREECEFRANCE. ML 1.8 (GEN).NEAR NORTH COAST OF IRIAN JAYASPAIN. mbLg 2.8 (MOD).SAN JUAN PROVINCE. ARGENTINAAUSTRIA. ML 1.1 (VIE).NEAR COAST OF CENTRAL CHILE. MD 3,7 (SAN).MENDOZA PROVINCE. ARGENTINACU8A REGION. MD 3.5 (HOJ).NEAR COAST OF GUERRERO, MEXICOKERMADEC ISLANDS REGIONSOUTHERN ALASKA. <AEIC>.REPUBLIC OF SOUTH AFRICA. ML 2.3 (PRE).NORTHWESTERN BALKAN REGIONEASTERN MEDITERRANEAN SEA. ML 3.7 (CSS).BULGARI AMYANMARSOUTHERN GREECE. MD 3.4 (ATH).LEEWARD ISLANDS. ML 2.9 (FDF).NORTH ISLAND. NEW ZEALANDSOUTHERN NORWAY. MD 1.7 (BER).GREECEGREECESOUTHERN NORWAY. MD 1.7 (BER).SOUTH OF HONSHU. JAPANRED SEAPHILIPPINE ISLANDS REGION. Felt (ill RF) at Bosco.Baton.STRAIT OF GIBRALTAR. mbLg 2.8 (MDD).SWITZERLAND. ML 2.4 (LDG), 1.8 (STR).TURKEY. MD 2.7 (ISK).CATAMARCA PROVINCE, ARGENTINAGREECENEAR COAST OF VENEZUELANORTHWESTERN BALKAN REGION. MD 2.4 (LJU), 2.1 (TRI). ML2.0 (VIE).NORTHERN ITALY. ML 2.1 (GEN), 2.1 (LDG).LEEWARD ISLANDS. ML 2.2 (FDF).POLAND. ML 3.6 (GRF), 3.2 (VIE).NEAR N. COAST OF EASTERN SIBERIA. Felt (V) at Tiksi,Russ i o.JAN MAYEN ISLAND REGIONNORTHWESTERN BALKAN REGION. ML 1.8 (TTG).TURKEY. MD 2.8 (ISK).GUATEMALA

MAR 1993 PAGE 18

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PHILIPPINE ISLANDS REGIONOFF COAST OF GUERRERO, MEXICOALASKA PENINSULA. <AEIC>.SAN JUAN PROVINCE, ARGENTINASOUTHERN EAST PACIFIC RISE. Mw 5.5 (HRV).

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CENTRAL CALIFORNIA. <BRK>.Berkeley.CENTRAL CALIFORNIA. <BRK>.BerkeIey.SOUTH OF HONSHU, JAPANNORTHERN ITALY. ML 2.1 (GEN), 1.6 (LOG)AEGEAN SEAJAN MAYEN ISLAND REGIONJAN MAYEN ISLAND REGIONTURKEY. MD 2.6 (ISK) .PYRENEES. ML 1.3 (STR).SOUTHERN GREECE. ML 4.0 (THE),JAN MAYEN ISLAND REGIONJAN MAYEN ISLAND REGIONPERU-BRAZIL BORDER REGIONCENTRAL PERUHOKKAIDO. JAPAN REGION. Mw 6.6 (HRV).REPUBLIC OF SOUTH AFRICA. ML 2.7 (PRE).BANDA SEANORTHERN COLOMBIAFLORES REGION. INDONESIANEAR SOUTH COAST OF FRANCE. ML 2.8 (STR).NEAR SOUTH COAST OF FRANCE. ML 2.7 (STR).HOKKAIDO. JAPAN REGIONAFGHANISTAN-TAJIKISTAN BORD REG. Mw 5.1 (HRV). Felt atChitrol and Peshawar, Pakistan.REPUBLIC OF SOUTH AFRICA. ML 2.3 (PRE).WASHINGTON-OREGON BORDER REGION. Mw 5.6 (HRV). <SEA-P>.ML 5.7 (SEA). 5.5 (BRK). Mo-1.6*18**17 Nm (BRK).Numerous people were treated for minor injuries. Damage(VII) at Conby, Mo IoI I a, Mount Angel and Newberg,Oregon. Slight damage (VI) at Amity, Aurora, Boring,Cascodio, Dayton, Donald, Dundee, Estacado, GrandeRonde, Lake Oswego, Mill City, Mulino, Oregon City,Portland, Salem, Silverton and West Linn, Oregon. Alsodamage to several bridges in the McMinnville, Oregonarea. Landslides were reported near Mount Hoad, Oregon.Felt (V) throughout a wide area of northwestern Oregonincluding Brightwoad, Corvollis, Dallas. Detroit,Government Camp, Gresham, Hillsbora, Idonho, Mill City,Milwoukie. Nehalem, Pacific City, Roiner and Sandy.Also felt (V) at Comas, Kolomo and Underwood,Washington. Felt south as for as Coos Boy, Oregon andnorth to Seattle, Wasthington.NEAR COAST OF CENTRAL CHILE. Felt (III) at La Sereno,Coquimbo, Vicuna, Bollenas and Ovolle.WASHINGTON-OREGON BORDER REGION. <SEA-P>.WASHINGTON-OREGON BORDER REGION.WASHINGTON-OREGON BORDER REGION.Felt in the epicentral area.WASHINGTON-OREGON BORDER REGION.2.3 (GS).AUSTRIA. ML 1.6 (VIE).WASHINGTON-OREGON BORDER REGION.Felt (IV) at Scatts Mills and (III) at Donald. Oregon.Felt in the epicentrol area.GREECE. MD 3.8 (ATH) .REPUBLIC OF SOUTH AFRICA. ML 2.3 (PRE).SAN JUAN PROVINCE. ARGENTINASAN JUAN PROVINCE, ARGENTINANEAR COAST OF CENTRAL CHILE. MD 3.9 (SAN).TURKEY. Felt at Diyorbokir and Elazig.HALMAHERA, INDONESIAHALMAHERA. INDONESIA. Mw 5.3 (HRV).GERMANY. ML 2.2 (FUR).WASHINGTON-OREGON BORDER REGION.TIMOR SEASOLOMON ISLANDS. Mw 5.4 (HRV).NORTHERN ITALY. ML 1.5 (GEN).WASHINGTON-OREGON BORDER REGION.NEPAL-INDIA BORDER REGION. ML 4.2 (NDI)NEAR COAST OF NORTHERN CHILE. Felt (III) at Antofagostoand (II) at Mej i I I ones.SOUTHERN ALASKA. <AEIC>.CENTRAL ITALY. MD 3.7 (TRI). 3.3 (FIR), 3.3 (ROM). ML3.4 (LOG).WASHINGTON-OREGON BORDER REGION.2.7 (GS).AEGEAN SEACHILE-ARGENTINA BORDER REGIONSALTA PROVINCE, ARGENTINAFIJI ISLANDS REGIONOFF E. COAST OF N. ISLAND, N.2.REPUBLIC OF SOUTH AFRICA. ML 2.1 (PRE).HALMAHERA, INDONESIACHILE-ARGENTINA BORDER REGION. MD 3.3 (SAN).NEAR COAST OF CENTRAL CHILE. MD 4.1 (SAN).'CHILE-ARGENTINA BORDER REGION. MD 4.1 (SAN).

<SEA-P>. <SEA-P>.

<SEA-P>. MD

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2.4 (SEA),

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<SEA-P>. MD 2.6 (SEA),

PAGE 19 MAR 1993

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ML 4.7 (TTG). 4.6 (ATH), 4.4 (THE).Messinia and Zakinthos

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SOUTHERN GREECEFelt in Akhaia, Arkadhia, IliaProv i nces.SOUTHERN GREECE. ML 4.6 (TTG), 4.2 (THE). Felt inAkhaia, Arkadhia. Ilia, Messinia and ZakinthosPrav i nces.SOUTHERN GREECE. Mw 5.4 (HRV). ML 4.8 (ATH), 4.8 (THE).Two people were slightly injured and damage in thePirgos-AmaIias area. Felt in Akhaia. Arkodhia, Ilia,Messinia and Zakinthos Provinces.SOUTHERN GREECE. MD 3.8 (ATH).SOUTHERN GREECESOUTHERN GREECE. ML 4.0 (THE), 3.9 (ATH).SOUTHERN GREECE. ML 3.3 (ATH).SOUTHERN GREECE. ML 3.7 (THE)CHILE-ARGENTINA BORDER REGIONSOUTHERN GREECE. ML 4.3 (ATH)SOUTHERN GREECE. ML 3.5 (THE)REPUBLIC OF SOUTH AFRICA. MLREPUBLIC OF SOUTH AFRICAWASHINGTON-OREGON BORDER REGION3.0 (GS).VANUATU ISLANDSWASHINGTON-OREGON BORDER REGION. <SEA-P>. MD 3.1 (SEA),3.1 (GS). Felt (IV) at Scotts Mills; (III) at MountAngel and Portland; (II) at Silverton, Oregon.NEW BRITAIN REGION, P.N.G.WASHINGTON-OREGON BORDER REGION. <SEA-P>2.5 (GS).WESTERN ARABIAN PENINSULA. Felt at Jizon, Soudi Arabia.TURKEY. MD 3.3 ( ISK) .CENTRAL ALASKA. <AEIC>. ML 2.8 (AEIC), 3.1 (PMR).SOUTHERN BOLIVIATURKEY. MD 2.7 (ISK).OFF E. COAST OF N. ISLAND, N.Z.MENDOZA PROVINCE, ARGENTINASOUTHERN GREECE. MD 3.3 (ATH).KERMADEC ISLANDS REGIONNORTHERN IRAN. Mw 5.1 (HRV). Considerable damage inBov i r Ahmad i vo Kohkiluyeh Province.SAN JUAN PROVINCE. ARGENTINAAFGHANISTAN-TAJIKISTAN BORD REG.SOUTH OF FIJI ISLANDSSOUTHERN GREECE. MD 3.1 (ATH).EASTERN NEW GUINEA REG., P.N.G.LEEWARD ISLANDS. MD 2.7 (TRN). ML 3.0 (FDF).NORTH ISLAND, NEW ZEALANDSOUTHERN ALASKA. <AEIC>.NORTHERN ITALY. ML 2.3 (LOG). 2.2 (GEN).NORTHERN ITALY. ML 1.5 (GEN).SOUTHERN GREECE. MD 3.2 (ATH). ML 3.1 (THE).WASHINGTON-OREGON BORDER REGION. <SEA-P>. MD 2.3 (SEA),2.4 (GS).TAIWAN REGIONMENDOZA PROVINCE, ARGENTINA. MD 4.4 (SAN).NORTHERN MOLUCCA SEASOUTHERN GREECE. ML 3.4 (ATH), 3.2 (THE).NEAR COAST OF NORTHERN CHILEWESTERN IDAHO. ML 3.3 (GS), 3.6 (BUT). Felt at ChaI I isand Clayton.SOUTHERN GREECE. MD 3.9 (ATH).NORTHERN MOLUCCA SEAAEGEAN SEA. MD 3.2 (ATH).WESTERN AUSTRALIASOUTHERN GREECE. ML 3.2 (THE).

MAR 1993 PAGE 20

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PAGE 21 MAR 1993

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<SLM-P>. MD 2.7 (SLM),

MAR 1993 PAGE 22

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CHILE-ARGENTINA BORDER REGION. MO 3.8 (SAN).SOUTHERN GREECE. ML 4.1 (TTG). 4.0 (TIR), 3.9 (ATH).3.9 (THE).NORTHERN ITALY. ML 2.3 (GEN). 1.9 (LOG).HINDU KUSH REGION, AFGHANISTANHEBGEN LAKE REGION. ML 3.4 (BUT).GERMANY. ML 3.3 (STR), 3.1 (GRF), 2.9 (BNS).PUERTO RICO REGIONLEEWARD ISLANDS. MD 3.2 (TRN). ML 3.3 (FDF).TONGA ISLANDSAUSTRIA. ML 0.9 (VIE).CHILE-ARGENTINA BORDER REGIONSOUTHERN GREECE. ML 3.6 (ATH). 3.6 (THE).TURKEY. MD 2.6 (ISK).SOUTHERN GREECE. ML 3.1 (THE).KERMADEC ISLANDS REGIONSOUTHERN GREECE. ML 3.4 (ATH). 3.2 (THE).WESTERN AUSTRALIASOUTHERN GREECE. MD 3.7 (ATH).NORTHERN ITALY. ML 1.6 (GEN).CHILE-BOLIVIA BORDER REGION. Mw 5.8 (HRV). Felt (III)at Antafagasta and Taltal. Chile.PYRENEES. ML 3.1 (LOG). mbLg 3.0 (MOD).NEAR COAST OF OAXACA. MEXICOTURKEY. MD 3.3 (ISK).NEW BRITAIN REGION, P.N.G.GREECEGREECESOUTHERN ALASKA. <AElC>.TURKEY. MD 2.7 (ISK).GREECESOUTHERN GREECE. ML 3.9 (THE), 3.7 (ATH).SOUTHERN GREECE. ML 3.7 (THE), 3.5 (ATH).SOUTH OF FIJI ISLANDSSOUTH OF JAWA, INDONESIATANIMBAR ISLANDS REG., INDONESIAGREECE-BULGARIA BORDER REGION. ML 1.4 (SKO).SOUTHERN GREECE. ML 3.3 (ATH).REPUBLIC OF SOUTH AFRICA. ML 2.7 (PRE).WINDWARD ISLANDS. ML 3.5 (FDF).SOUTHEAST ASIAGREECEGERMANY. ML 1.8 (UCC).KENAI PENINSULA, ALASKA. <AEIC>. ML 3.0 (AEIC).REPUBLIC OF SOUTH AFRICA. ML 3.1 (PRE).FRANCE. ML 2.3 (LOG).NORTHWESTERN BALKAN REGION. MDSOUTHERN GREECE. ML 3.7 (THE), 3.5AUSTRIA. ML 1.3 (VIE).REPUBLIC OF SOUTH AFRICA. ML 2.7 (PRE).OFF COAST OF OREGONPOLANDSOUTH OF KERMADEC ISLANDSKAMCHATKASOUTHERN GREECE. ML 4.2 (TTG)3.8 (TIR).NORTHERN ITALY. ML 2.2 (LDG),VANUATU ISLANDSEAST OF KURIL ISLANDSNEAR COAST OF CENTRAL CHILE. MD 3.9 (SAN).FIJI ISLANDS REGIONHOKKAIDO, JAPAN REGIONARMENIA-AZERBAIJAN-IRAN BORD REG. Felt in the Khvoy.Oareh Zia ad Din and Saltnas areas, Iran.SOUTHERN GREECE. ML 3.2 (ATH), 3.2 (THE).FRANCE. ML 3.0 (LDG).SOUTHERN GREECE. ML 3.5 (THE), 3.2 (ATH).KENAI PENINSULA, ALASKA.(PMR).SAN JUAN PROVINCE, ARGENTINANORTHERN CHILEIOWA. mbLg 2.8 (GS), 2.9 (TUL). Minor damage at PeruState College in Peru, Nebraska. Felt (V) at Peru andVerdon; (IV) at Nemaha and Stella; (III) at Dawson,Falls City, Salem and Shubert, Nebraska. Also felt (IV)at Rock Port, Missouri. Felt in parts of Brown,Doniphan and Nemaha Counties, Kansas.SOUTH OF PANAMA. MD 4.0 (UFA).SOUTHWESTERN RYUKYU ISLANDS. Mw 5.3 (HRV).SOUTH OF FIJI ISLANDS. Mw 5.7 (HRV).LOYALTY ISLANDS REGIONOINGHAI, CHINAANDREANOF ISLANDS, ALEUTIAN IS.TURKEY. MD 2.7 (ISK).GREECENEAR EAST COAST OF KAMCHATKANEAR COAST OF CENTRAL CHILE. MD 3.8 (SAN).OAXACA, MEXICOGREECENORTHWESTERN BALKAN REGION. MD 2.9 (LJU). ML 2.6 (VIE).CHATHAM ISLANDS REGIONTURKEY. MD 2.9 (ISK).RYUKYU ISLANDS

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PAGE 23 MAR 1993

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22 NEW MADRID, MISSOURI REGION. <SLM-P>. MD 3.1 (SLM), 3.3 (TEIC). mbLg 3.3 (GS). Felt (V) at East Prairie, (IV) at Bertrond and (III) at Anniston, Kewanee and Matthews. Also felt at Charleston and Sikeston.

0.9 18 FRANCE. ML 2.7 (LOG).1.3 14 SOUTHERN GREECE. ML 3.4 (ATH).9.9 5 TURKEY. MD 3.5 (ISK).0.3 17 NORTH ISLAND. NEW ZEALAND


01 01 39 27.88 3.744S 138.536E 89km 6.1mb (101 obs. ) IRIAN JAYA, INDONESIA FAULT PLANE SOLUTION: P-Woves NP1:Strike- 65 Dip-82 Slip- -79 NP2: 176 21 -158


Comment: The focal mechanism is moderotely well controlled and corresponds to normal faulting with a moderate strike-slip component. The preferred fault plane is not determined.

RADIATED ENERGYNo. of sto: 15 Focal mech. F Energy 5.2±0.9*10** 12 Nm

MOMENT TENSOR SOLUTION Dep 87 No. of sta: 19 Pr i nc i poI Axes:


Best Double Coup Ie:Mo-2.0*19** 18 NP1-.Strike-165 Dip-27 Slip 170 NP2: 66 85 -64 CENTROID, MOMENT TENSOR (HRV) Data Used: GDSNL.P.B.: 44S. **C M.W.: 29S, 42C Centroid Location:Origin Time 91:39:35.9 0.1 Lat 3.68S 9.01 Lon 138.65E 6.01 Dep 97.5 9.7 Ho If-duration 2.7 Pr i nc i pa I Axes:


Best Double Coup Ie:Mo-1.7*19** 18NP1:Strike-178 Dip-43 Slip 141NP2: 57 65 -54

01 29 47 42.89 13.972S 174.784E 33km 4.9mb ( 15 obs.) 4.9Msz ( 14 abs.) FIJI ISLANDS REGION CENTROID, MOMENT TENSOR (HRV) Dota Used: GDSN L.P.B.: 21S, 28C Centroid Location: Origin Time 29:47:43.1 1.0

Lat 12.79S 9.09 Lon 175.16E 9.19Dep 15.0 FIX Half-duration 1.9P r i nc i poI Axes:

Scole 19**16 Nm T Val- 10.23 Pig-27 Azm-179 N -1.09 7 272 P -9.23 62 16

Best Double Couple:Mo-9.7*10**16 NP1 :St r i ke-251 Dip-19 Slip 112 NP2: 95 72 -83

92 99 23 59.64 8.294S 122.393E 15km 5.9mb ( 83 obs.) 5.1Msz ( 25 obs.) FLORES REGION, INDONESIA RADIATED ENERGYNo. of sta: 14 Focal mech. M Energy 1.7±0.4*10** 13 Nm


Scole 10**17 NmT Val- 7.99 Pig-73 Azm-223 N 0.95 16 61 P -7.95 5 330

Best Double Couple:Mo-7.9*10**17 NP1:Strike- 43 Dip-42 Slip- 66 NP2: 254 52 110

CENTROID, MOMENT TENSOR (HRV) Dota Used: GDSN L.P.B.: 36S, 66C Cent ro i d Locot i on: Origin Time 90:24: 8.5 9.2 Lat 8.32S FIX;Lan 122.29E FIX Dep 30.6 2.1 Half-duration 1.5 P r i nc i pa I Axes:


Best Double Couple:Mo-3.8*10** 17 NP!:Strike- 51 Dip-41 Slip- 64 NP2: 263 54 119

02 06 12 05.62 6.274S 147.258E 64km 5.3mb ( 40 obs. )EASTERN NEW GUINEA REG., P.N.G. CENTROID, MOMENT TENSOR (HRV) Dota Used: GDSN L.P.B. : 36S, 59C Cent ro i d Locot i on: Origin Time 96:12: 9.2 0.3 Lot 6.25S 0.04 Lon 147.16E 0.95

Dep 22.1 4.2 Half-duration 1.7 P r i nc i pa I Axes:


Best Double Couple:Mo-3.1*10**17NP1:Strike-199 Dip-14 Slip- 165NP2: 213 87 77

93 13 96 27.94 13.154S 174.993E 33km5.4mb ( 19 obs.) S.lMsz ( 15 abs.)FIJI ISLANDS REGIONCENTROID. MOMENT TENSOR (HRV)Data Used: GDSNL.P.B.: 14S, 19CCent raid Lacat i on:Origin Time 13:06:27.7 9.6Lot 13.13S FIX;Lon 175.90E FIXDep 15.0 FIX Half-duration 4.6Pr i nc i pa I Axes:

Scole 19**17 Nm T Val- 1.14 Pig- 9 Azm-196 N -0.94 9 196 P -1.10 99 189

Best Double Couple:Mo-1.1 * 19**17 NP1:Strike-286 Dip-45 Slip- -99 NP2: 196 45 -99

93 23 14 25.91 13.342S 175.909E 14km 5.9mb ( 65 obs.) 5.8Msz ( 49 obs.) FIJI ISLANDS REGION FAULT PLANE SOLUTION: P-Waves NP1:Strike-193 Dip-87 Slip- -90 NP2: 283 3 -99


Comment: The focal mechanism is poorly controlled and corresponds to normal faulting. The preferred fault plane is not determined.

RADIATED ENERGYNo. of sto: 11 Focal mech. M Energy 6.1±1 . 4*10**12 Nm

MOMENT TENSOR SOLUTIONNo. of sta: 19Dep 12

Pr i nc i pa I Axes: Scale 10*»17 Nm T Vol- 8.98 Pig-43 N -0.25 39

Azm-166 288

MAR 1993 PAGE 24

P -7.84 33 39 Best Double Couple:Mo-8.0*10**17 NP1:Strike-184 Dip-36 Slip- 168 NP2: 285 84 66

CENTROID. MOMENT TENSOR (HRV) Doto Used: GDSN L.P.B.: 41S. 91C Centroid Locotion: Origin Time 23:14:29.8 0.2 Lot 13.16S 8.02 Lon 175.25E 8.02 Dep 15.0 FIX Hoif-duration 2.3 Pr i nc i pal Axes:

Scole 10»*17 Nm T Vol- 10.33 Pig-14 Azm-193 N 0.48 10 286 P -10.81 73 49

Best Double Couple:Mo-1.1»10»»18 NP1:Strike-270 Dip-32 Slip 108 NP2: 112 60 -79

04 14 35 58.50 13.241S 174.872E 19km5.8mb ( 50 obs.) S.SMsz ( 34 obs.)FIJI ISLANDS REGIONFAULT PLANE SOLUTION: P-Woves NP1:Strike-120 Dip-80 Slip- -90 NP2: 300 10 -90


Comment: The focol mechanism is poorly controlled and corresponds to normal faulting. The preferred foult plone is not determined.

CENTROID. MOMENT TENSOR (HRV)Doto Used: GDSNL.P.B.: 35S, 69CCent raid Locot i on:Origin Time 14:36: 1.3 0.2Lot 13.11S 0.03 Lon 174.94E 0.03Dcp 15.0 BDY Half-duration 1.7Pr i nc i poI Axes:

Scole 10»»17 Nm T Vol- 3.87 Pig- 9 Azm-194 N 0.82 8 103 P -4.69 78 333


04 19 42 24.21 13.253S 175.007E 33km5.4mb ( 24 obs.) 5.0Msz ( 22 obs.)FIJI ISLANDS REGIONCENTROID, MOMENT TENSOR (HRV)Doto Used: GDSNL.P.B.: 25S, 36CCent ro i d Locot i on:Origin Time 19:42:25.8 0.6Lot 13.13S 0.08 Lon 174.81E 0.07Dep 15.0 FIX Hoif-durotion 1.0Pr i nc i pa I Axes:

Scole 10**16 NmT Vol- 7.76 Pig- 7 Azm- 17 N 2.96 17 109 P -10.72 72 264

Best Double Couple:Mo-9.2*10»*16 NP1:Strike- 88 Dip-41 Slip 116 NP2: 302 54 -69

05 06 55 08.63 37.178N 21.505E 39km5.2mb (102 obs.) 5.0Msz ( 15 obs.)SOUTHERN GREECECENTROID, MOMENT TENSOR (HRV)Doto Used: GDSNL.P.B.: 10S, 16CCent roi d Locot i on:Origin Time 06:55:10.2 0.7Lot 36.90N 0.10 Lon 21.41E 0.11Dep 37.0 FIX Half-duration 1.1Pr i nc i poI Axes:

Scole 10**16 Nm T Vol- 9.12 Pig-70 Arm-341 N -3.08 19 139 P -6.04 7 231


05 08 20 55.37 28.710N 113.122* 10km 5.5mb ( 72 obs.) S.SMsz ( 25 obs.) BAJA CALIFORNIA. MEXICO CENTROID, MOMENT TENSOR (HRV) Dota Used: GDSN

L.P.B.: 26S, 53CCentroid Locotion:Origin Time 08:21: 0.7 0.3Lot 29.25N 0.05 Lon 113.43W 0.04Dep 15.0 BDY Ho If-durotion 2.3Pr i nc i pa I Axes:

Scale 10»»17 Nm T Vol- 5.35 Pig- 3 Azm- 90 N -2.40 20 181 P -2.95 70 353

Best Double Coup Ie:Mo-4.2*10**17 NP1 .-Strike-160 Dip-46 Slip 118 NP2: 18 51 -64

05 14 00 14.25 29.497S 60.914E 10km5.5mb ( 27 obs.) 4.8Msz ( 5 obs.)SOUTHWEST INDIAN RIDGECENTROID. MOMENT TENSOR (HRV)Doto Used: GDSNL.P.B.: 23S, 39CCent ro id Locot i on:Origin Time 14:00:20.1 0.4Lot 29.46S 0.06 Lon 61.13E 0.09Dep 15.0 FIX Hoif-duration 1.1Pr i nc i poI Axes:

Scale 10»»16 Nm T Vol- 10.30 Pig-26 Azm-320 N 0.20 5 228 P -10.50 64 128

Best Double Coup Ie:Mo-1.0*10»*17 NP1:Strike- 62 Dip-20 Slip- -76 NP2: 226 71 -95

05 20 30 05.67 54.557N 161.845W 33km5.2mb ( 75 obs.) 4.6Msz ( 13 obs.)ALASKA PENINSULACENTROID, MOMENT TENSOR (HRV)Dato Used: GDSNL.P.B.: 17S. 21CCentroid Locotion:Origin Time 20:30: 8.7 1.4Lot 54.40N 0.11 Lon 161.41W 0.32Dep 49.3 9.1 Ho If-durotion 1.0Pr i nc i poI Axes:



06 03 05 49.87 10.972S 164.181E 20km6.1mb ( 85 obs.) 7.1Msz ( 62 obs.)SANTA CRUZ ISLANDS REGIONFAULT PLANE SOLUTION: P-Woves NP1:Strike-155 Dip-88 Slip- 155 NP2: 246 65 2


Comment: The focol mechonism is moderately well controlled and corresponds to strike-slip faulting with a moderate reverse component. The preferred foult plane is not de te rmi ned.

RADIATED ENERGYNo. of sto: 20 Focol mech. F Energy 1 . 3±0.2*10** 15 Nm

MOMENT TENSOR SOLUTIONDep 17 No. of sto: 29Pr i nc i poI Axes:

Scale 10*»19 Nm T Vol- 5.63 Pig- 7 Azm-112 N -0.22 79 345 P -5.41 9 203

Best Double Couple:Mo-5.5*10**19 NP1:Strike-247 Dip-79 Slip- -2 NP2: 338 88 -169

CENTROID, MOMENT TENSOR (HRV)Doto Used: GDSNL.P.B.: 41S, **C M.W.: 38S. **CCent ro i d Locot i on:Origin Time 03:06: 0.0 0.1Lot 10.73S 0.01 Lon 164.02E 0.00Dep 15.0 FIX Hoif-durotion 8.6Pr i nc i poI Axes:


Best Double Couple:Mo 5.2*10**19 NP1:Strike-252 Dip-55 Slip- 7 NP2: 158 84 145

06 10 02 06.95 26.536S 177.355W 18km 5.9mb ( 63 obs.) 6.6Msz ( 63 obs.) SOUTH OF FIJI ISLANDS FAULT PLANE SOLUTION: P-Woves NP1:Strike-175 Dip-90 Slip- 173 NP2: 265 83 360

Pr i nc i pol Axes:T Pig- 5 Azm-130 P 5 220

Comment: The focal mechonism is moderately well controlled and corresponds to strike-slip faulting with a small reverse component. The preferred foult plone is not determined.

RADIATED ENERGYNo. of sta: 16 Focal mech. F Energy 4.6±1.1 * 10**14 Nm

MOMENT TENSOR SOLUTION Dep 36 No. of sta: 28 Pr i nc i poI Axes:

Scole 10**18 Nm T Vol- 7.99 Pig- 4 Azm-321 N -0.01 82 202 P -7.98 7 51


CENTROID, MOMENT TENSOR (HRV) Dato Used: GDSNL.P.B.: 40S, **C M.W.: 38S, 75C Cent ro id Locat i on: Origin Time 10:02:12.4 0.1 Lot 26.57S 0.01 Lon 177.29W 0.01 Dep 15.4 0.7 Hoif-durotion 4.5 Pr i nc i poI Axes:

Scole 10*»18 Nm T Vol- 6.81 Pig- 6 Azm-139 N -0.26 72 249 P -6.55 17 47


06 16 26 56.96 11.062S 163.386E 25km5.7mb ( 68 obs.) 6.6Msz ( 60 obs.)SOLOMON ISLANDSCENTROID. MOMENT TENSOR (HRV)Dota Used: GDSNL.P.B.: 44S, **C M.W.: 39S, 92CCentroid Location:Or igi n Time 16:27: 1.40.1Lot 10.89S 0.01 Lon 163.44E 0.01Dep 15.0 FIX Hoif-durotion 5.0Pr i nc i poI Axes:

Scole 10*»18 Nm T Vol- 10.05 Pig-30 Azm-110 N 1.39 50 337 P -11.43 24 215

Best Double Couple:Mo-1. 1 * 10** 19 NP1:Strike-255 Dip-50 Slip- 5 NP2: 162 86 140

07 07 00 39.74 10.773S 164.230E 34km 4.8mb ( 18 obs.) 4.9Msz ( 13 obs.) SANTA CRUZ ISLANDS REGION CENTROID, MOMENT TENSOR (HRV) Dota Used: GDSN L.P.B.: 21S. 28C Cen t ro i d Locot i on: Origin Time 07:00:39.0 1.1 Lot 10.78S 0.12 Lon 164.10E 0.11 Dep 18.8 4.6 Half-duration 1.5 Pr i nc i pol Axes:

Scole 10»*16 Nm T Vol- 11.01 Pig-54 Azm-299 N -2.59 9 43 P -8.42 34 139


07 07 58 09.07 10.889S 164.406E 36km 5.1mb ( 28 obs.) 5.3Msz ( 22 obs.) SANTA CRUZ ISLANDS REGION CENTROID, MOMENT TENSOR (HRV) Doto Used: GDSN L.P.B.: 39S. 69C Cent ro i d Locot i on:

PAGE 25 MAR 1993

Origin Tim* 87:58:12.8 0.4 Lot 16.595 0.04 ton 164.28E 0.04 Dep 16.1 2.1 Hoif-durotion 1.4 Pr i nc i poI Axes:

Scol« 10»»17 MmT Vol- 2.80 Pig-61 Azm- 14N 0.16 3 278P -2.95 29 186


08 17 03 20.66 11.123S 163.298E 28km4.9mb ( 23 obs.) 5.1Msz ( 22 obs.)SOLOMON ISLANDSCENTROID, MOMENT TENSOR (HRV)Data Used: GDSNL.P.B.: 38S, 70CCent ro i d Locot i an:Origin Time 17:03:21.9 0.3Lot 11.18S 0.03 Lan 163.37E 0.03Dep 15.0 FIX Half-durotion 1.4Pr i nc i poI Axes:

Scale 10»»17 Nm T Vol- 2.44 Pig-69 Arm-322 N -0.12 10 79 P -2.32 18 172

Best Double Cauple:Ma-2.4*10**17 NP1:Strike-278 Dip-28 Slip- 111 NP2: 74 64 79

88 21 50 41.72 6.706S 131.616E 26km5.5mb ( 47 obs.)TANIMBAR ISLANDS REG., INDONESIACENTROID. MOMENT TENSOR (HRV)Dota Used: GDSNL.P.B. : 35S, 60CCent ro i d Locot i on:Or igin Time 21:50:49.4 0.3Lot 6.74S 0.03 Lon 131.82E 0.03Dep 49.5 2.6 Ho If-durotion 1.5Pr i nc i pa I Axes:

Scale 10»»17 Nm T Vol- 2.42 Pig-32 Azm-304 N -0.17 57 119 P -2.26 2 213


09 01 29 14.64 55.678S 146.999E 10km 5.5mb ( 38 obs.) 6.0Msz ( 52 obs.) WEST OF MACOUARIE ISLAND CENTROID. MOMENT TENSOR (HRV) Dota Used: GDSNL.P.B.: 43S. »*C M.W.: 32S, 52C Cent raid Locot i an: Or igin Time 01:29:23.1 0.1 Lot 55.91S 0.01 Lon 146.91E 0.02 Dep 15.0 FIX Half-durotion 2.8 Pr i nc i po I Axes:


Best Double Coup Ie:Mo-1.9*10** 18 NP1:Strike-169 Dip-59 Slip- -4 NP2: 261 86 -149

09 07 45 43.67 59.624S 25.709W 33km 5.7mb ( 26 obs.) 6.1Msz ( 49 obs.) SOUTH SANDWICH ISLANDS REGION CENTROID, MOMENT TENSOR (HRV) Data Used: GDSNL.P.B.: 46S, »*C M.W.: 30S, 48C Cent ro i d Loco t i on: Or igi n Time 07:45:52.3 0 1 Lot 60.33S 0.01 Lon 24.76W 0.02 Dep 15.0 FIX Half-duration 3.6 Pr i nc i pa I Axes:



09 22 40 41.09 59.868S 25.996W 33km 5.2mb ( 13 obs.) 4.8Msz ( 3 obs.) SOUTH SANDWICH ISLANDS REGION CENTROID, MOMENT TENSOR (HRV) Doto Used: GDSN

L.P.B.: 20S. 29CCent ra i d Locot i on:Origin Time 22:40:47.6 0.4Lot 59.60S 0.07 Lon 27.54W 0.12Dep 15.0 FIX Hoif-durotion 1.2Pr i nc i pa I Axes:

Scale 10«*16 Nm T Val- 12.72 Pig-33 Azm-305 N -2.08 8 210 P -10.65 56 107


10 12 39 23.90 59.700S 25.719W 33km 5.4mb ( 25 obs.) 6.4Msz ( 38 abs.) SOUTH SANDWICH ISLANDS REGION CENTROID. MOMENT TENSOR (HRV) Dota Used: GDSNL.P.B.: 45S, **C M.W.: 36S. 75C Cent raid Locot i on: Origin Time 12:39:33.8 0.1 Lot 60.49S 0.01 Lon 24.73W 0.02 Dep 15.0 FIX Half-duration 4.4 Pr i nc i pa I Axes:

Scale 10*»18 Nm T Vol- 5.52 Pig-73 Azm-253 N 0.64 11 24 P -6.16 12 117

Best Double Coup Ie:Mo-5.8*10** 18 NP1:Strike-221 Dip-34 Slip- 11V NP2: 17 58 77

10 21 56 27.87 48.383N 152.987E 141km5.5mb (152 obs.)KURIL ISLANDSCENTROID. MOMENT TENSOR (HRV)Dota Used: GDSNL.P.B.: 11S, 14CCent ro i d Locot i on:Origin Time 21:56:32.6 1.0Lat 48.52N 0.15 Lon 152.46E 0.13Dep 162.8 4.2 Ho If-duration 1.0Pr i nc i pa I Axes:


Best Double Coup Ie:Mo-6.9*10** 16 NP1:Strike-184 Dip- 4 Slip- -76 NP2: 351 86 -91

11 12 46 46.43 8.801N 126.918E 38km 5.3mb ( 46 obs.) 5.1Msz ( 11 obs.) MINDANAO. PHILIPPINE ISLANDS CENTROID. MOMENT TENSOR (HRV) Data Used: GDSN L.P.B. : 34S, 56C Centroid Location:Origin Time 12:46:48.6 0.4Lat 8.74N 0.05 Lon 127.55E 0.05Dep 21.1 2.4 Half-durotion 1.3Pr i nc i pa I Axes:

Scale 10**16 NmT Val- 9.51 Pig-83 Azm-319N -0.29 5 174P -9.22 4 83


11 22 07 27.33 16.710S 172.712W 33km5.4mb ( 43 obs.) 5.4MsZ ( 37 obs.)SAMOA ISLANDS REGIONCENTROID. MOMENT TENSOR (HRV)Data Used: GDSNL.P.B.: 35S, 72CCent ro i d Locot i an:Or igin Time 22:07:30.8 0.3Lot 16.79S 0.03 Lon 172.26W 0.03Dep 15.0 BDY Ho If-durotion 1.6Pr i nc i pa I Axes:


Best Double Coup Ie:Mo-4.1 * 10** 17 NP1:Strike-187 Dip-18 Slip- 79 NP2: 18 72 93

12 04 24 19.32 19.576N 38.743E 10km 5.1mb ( 81 obs.) 5.2Msz ( 14 obs.) RED SEA

CENTROID. MOMENT TENSOR (HRV)Data Used: GDSNL.P.B.: 32S. 50CCent ra id Lacat ion:Origin Time 04:24:21.4 0.6Lat 19.39N 0.08 Lan 38.34E 0.06Dep 15.0 FIX Half-duration 1.1Pr i nc i pa I Axes:

Scale 10**16 Nm T Vol- 9.98 Pig-14 Azm- 53 N -0.70 4 322 P -9.28 76 217

Best Double Coup Ie:Mo-9.6*10**16 NP1 :Strike-148 Dip-31 Slip- -83 NP2: 320 59 -94

12 12 06 15.38 59.406S 149.430E 10km 5.2mb ( 24 abs.) 5.4Msz ( 8 obs.) WEST OF MACOUARIE ISLAND CENTROID. MOMENT TENSOR (HRV) Data Used: GDSN L.P.B.: 37S, 84C Cent raid Lacat ion: Origin Time 12:06:22.2 0.2 Lat 59.12S 0.03 Lan 149.42E 0.05 Dep 15.0 FIX Hoif-durotion 1.7 P r i nc i pa I Axes:



12 14 01 35.40 14.385S 178.252W 10km 6.0mb ( 82 obs.) 6.4Msz ( 66 obs.) FIJI ISLANDS REGION RADIATED ENERGYNo. of sta: 25 Focol mech. M Energy 1.0±0.2*10**14 Nm

MOMENT TENSOR SOLUTION Dep 5 No. of sta: 27 P r i nc i pa I Axes:

Scale 10**18 NmT Vol- 4.48 Pig-63 Azm-154*N 0.20 25 311P -4.68 9 45


CENTROID, MOMENT TENSOR (HRV)Dota Used: GDSNL.P.B.: 42S, **C M.W.: 26S. 49C Cent ro i d Locot i on: Origin T i me 14:01:42.2 0.1 Lot 14.30S 0.01 Lon 178.09W 0.01 Dep 15.0 BDY Ho If-durotion 3.4 P r i nc i poI Axes:


Best Double Coup Ie:Mo-4.0*10*«18 NP1:Strike-145 Dip-36 Slip- 115 NP2: 295 57 73

12 21 53 45.85 14.293S 178.190W 33km5.6mb ( 28 obs.) 5.3Msz ( 35 obs.)FIJI ISLANDS REGIONCENTROID, MOMENT TENSOR (HRV)Data Used: GDSNL.P.B.: 38S, 59CCent ro i d Lacat i on:Origin Time 21:53:48.9 0.3Lat 14.14S 0.05 Lon 178.06W 0.04Dep 15.0 FIX Hoif-durotion 1.2P r i nc i pa I Axes:



12 23 32 46.49 19.633N 38.647E 10km 4.7mb ( 34 obs.) 4.7Msz ( 3 obs.) RED SEACENTROID. MOMENT TENSOR (HRV) Dota Used: GDSN L.P.B.: 12S. 16C Cent ro i d Locot i on:

MAR 1993 PAGE 26

Origin Time 23:32:51.8 0.5Lot 19.76N FlX;Lon 38.6BE FIXDep 15.0 FIX Half-duration 1.0Pr i nc i pal Axes:

Scale 10«*16 NmT Vai- 4.25 Pig- 0 Azm-231N -0.31 0 141P -3.94 90 180

Best Double Coup Ie:Mo-4.1 * 19«* 16NP1:Strike-321 Dip-45 Slip- -90NP2: 141 45 -90

13 03 03 05.72 18.218S 178.430W 631km5.imb ( 49 obs.)FIJI ISLANDS REGIONCENTROID, MOMENT TENSOR (HRV)Doto Used: GDSNL.P.B.: 38S. 67CCentro i d Locot i on:Origin Time 03:03:12.8 0 . 4Lot 17.66S 0.04 Lon 178.31W 0.83Dep 649.5 2.0 Ho If-durotion 1.6Pr i nc i poI Axes:


Best Double Coup Ie:Mo-2.2*18**17 NP1: Strike- 40 Dip-45 Slip 116 NP2: 255 51 -66

13 06 47 10.51 26.652S 177.305W 82km4.8mb ( 12 obs.)SOUTH OF FIJI ISLANDSCENTROID, MOMENT TENSOR (HRV)Data Used: GDSNL.P.8.: 29S. 42CCent raid Lacat i on:Or igin Time 86:47: 8.7 0.6Lot 26.42S 0.07 Lon 177.65W 0.87Dep 28.0 6.5 Half-duration 1.8Pr i nc i poI Axes:

Scale 18**16 Nm T Val- 7.55 Pig- 0 Azm- 90 N -1.12 65 188 P -6.44 25 8

Best Double Coup Ie:Mo-7.0*10»«16 NP1 :Str ike-138 Dip-72 Slip 162 NP2: 42 72 -18

13 09 85 29.34 11.326N 141.824E 45km 5.1mb ( 48 obs.) 4.9Msz ( 21 obs.) WESTERN CAROLINE ISLANDS CENTROID, MOMENT TENSOR (HRV) Data Used: GDSN L.P.B.: 37S, 63C Cent roi d Locat ion: Or igin Time 89:85:33.7 0.3 Lat 11.39N 0.84 Lon 141.97E 8.83 Dep 58.8 2.6 Half-duration 1.8 Pr i nc i pa I Axes:

Scale 18**16 NmT Val- 18.02 Pig-73 Azm-339N -8.92 13 288P -9.18 11 187


13 17 12 26.28 19.626N 38.799E 18km5.7mb (153 obs.) 5.4Msz ( 43 obs.)RED SEACENTROID, MOMENT TENSOR (HRV)Data Used: GDSNL.P.B.: 38S, 81CCent raid Location:Origin Time 17:12:27.8 0.4Lat 19.42N 0.03 Lon 38.55E 0.03Dep 15.0 FIX Half-duration 1.7Pr i nc i pa I Axes:

Scale 10**17 Nm T Val- 3.85 Pig- 5 Azm- 50 N -0.26 4 319 P -3.59 84 194


14 88 12 13.25 19.602N 38.774E 10km 4.9mb ( 41 obs.) 4.6Msz ( 8 obs.) RED SEACENTROID, MOMENT TENSOR (HRV) Data Used: GDSN

L.P.B.: 12S, 17C Centroid Location: Origin Time 08:12:19.8 0.6 Lat 19.65N FIXjLon 38.74E FIX Dep 15.0 FIX Half-duration 1.0 Pr i nc i poI Axes:



15 03 35 05.92 42.299N 143.100E 56km 5.1mb (102 obs.) HOKKAIDO, JAPAN REGION CENTROID, MOMENT TENSOR (HRV) Data Used: GDSN L.P.B.: 16S, 22C Centroid Location: Origin Time 03:35:11.8 1.3 Lot 42.11N 0.11 Lon 143.37E 0.11 Dep 68.8 5.1 Half-duration 1.0 Pr i nc i pa I Axes:

Scale 10*«16 Nm T Val- 4.90 Pig-64 Azm-255 N 1.15 21 36 P -6.05 15 132

Best Double Coup Ie:Mo-5.5*10* 16 NP1:Strike-250 Dip-35 Slip- 129 NP2: 25 63 66

15 16 08 57.88 26.708S 70.918W 29km 6.0mb ( 89 obs.) 6.2Msz ( 50 obs.) NEAR COAST OF NORTHERN CHILE FAULT PLANE SOLUTION: P-Waves NP1:Strike-347 Dip-75 Slip 153 NP2: 249 64 -17

Pr i nc i pa I Axes:T Pig- 7 Azm-116 P 30 211

Comment: The focal mechanism is moderately we I I control led and corresponds to strike slip faulting with a moderate normal component. The preferred fault plane is not de te rmi ned.


MOMENT TENSOR SOLUTION Dep 44 No. of sta: 19 Pr i nc i pa I Axes:

Scale 10**19 Nm T Vol- 1.08 Pig-20 Azm-135 N -0.81 46 22 P -1.67 37 240

Best Double Coup Ie:Ma-1.1 * 18** 19 NP1:Strike-271 Dip-48 Slip- -14 NP2: 11 79 -137

CENTROID. MOMENT TENSOR (HRV) Dota Used: GDSNL.P.B.: 48S, *«C M.W.: 34S, 57C Cent ro i d Locat i on: Origin Time 16:89: 9.7 8.1 Lot 26.55S 0.01 Lon 71.16W 0.01 Dep 59.6 1.2 Half-duration 4.2 Pr i nc i poI Axes:

Scale 10**18 Nm T Val- 5.92 Pig-35 Azm- 98 N 0.92 12 359 P -6.84 52 253

Best Double Coup Ie:Mo-6.4*10* 18 NPl:Strike-232 Dip-15 Slip- -36 NP2: 357 81 -102

16 11 59 26.46 19.516N 38.768E 10km 5.4mb ( 81 obs.) 4.8Msz ( 21 obs.) RED SEACENTROID, MOMENT TENSOR (HRV) Data Used: GDSN L.P.B.: 22S, 39C Centroid Location- Origin Time 11:59:28.8 0.7 Lat 19.18N 0.09 Lon 38.61E 0.07 Dep 15.0 FIX Half-duration 1.1 Pr i nc i pa I Axes:

Scale 10**16 Nm T Vol- 10.80 Pig- 9 Azm- 53 N -1.85 14 146 P -8.96 73 290

Best Double Coup Ie:Mo 9.9*10**16 NPl:Strike-127 Dip-38 Slip 114 NP2: 335 56 -73

16 13 03 07.07 0.527N 126.145E 57km5.2mb ( 38 obs.)NORTHERN MOLUCCA SEACENTROID, MOMENT TENSOR (HRV)Dota Used: GDSNL.P.B.: 27S, 40CCentroid Location:Or igin Time 13:03: 7.5 0.7Lat 1.01N 0.88 Lon 125.70E 0.09Dep 15.5 4.6 Half-duration 1.2Pr i nc i poI Axes:


Best Double Coup Ie:Mo-1.0*10**17 NP1:Strike-343 Dip-13 Slip 126 NP2: 200 80 -82

16 22 59 45.81 11.625N 41.987E 16km5.6mb (103 obs.) 5.2Msz ( 26 obs.)ETHIOPIACENTROID, MOMENT TENSOR (HRV)Data Used: GDSNL.P.B. : 39S. 79CCent ro i d Locat i on:Origin Time 22:59:48.1 0.6Lot 11.49N 0.04 Lon 41.82E 0.03Dep 15.0 BDY Half-duration 1.7Pr i nc i pa I Axes:

Scale 10..17 Nm T Val- 3.59 Pig- 9 Azm-208 N -0.51 9 116 P -3.07 78 344


17 04 35 58.12 37.691S 74.939W 9km 5.8mb ( 45 obs.) OFF COAST OF CENTRAL CHILE FAULT PLANE SOLUTION: P-Woves NP1:Strike-340 Dip-62 Slip- -90 NP2: 160 28 -90

Pr i nc i pa I Axes:T Pig-17 Azm- 70 P 73 250

Comment: The focal mechanism is poorly controlled and corresponds to normal faulting. The preferred fault plane i s NP1.

RADIATED ENERGYNo. of sta: 10 Focal mech. C Energy 6.1±1.1 * 10»«12 Nm

CENTROID, MOMENT TENSOR (HRV) Data Used: GDSN L.P.B. : 26S, 45C Cent ro i d Locat i on: Origin Time 04:35:58.3 0.3 Lot 38.67S 0.04 Lon 75.37W 0.05 Dep 15.0 BDY Half-duration 1.6 Pr i nc i pa I Axes:


Best Double Coup Ie:Mo-3.1 10**17 NPl:Strike-224 Dip-30 Slip- -37 NP2: 348 72 -115

18 15 47 00.42 38.340N 22.155E 59km5.7mb (135 obs.)GREECECENTROID, MOMENT TENSOR (HRV)Data Used: GDSNL.P.B.: 39S, 94CCent ro id Locot i on:Or igin Time 15:47: 6.5 0.3Lot 38.05N 0.03 Lon 21.79E 0.03Dep 49.0 BDY Half-duration 1.9Pr i nc i poI Axes:


Best Double CaupIe:Mo-6.0*10* 17 NP1:Strike-333 Dip-30«SIip- 125 NP2: 114 66 72

PAGE 27 MAR 1993

19 01 48 05.19 26.742S 70.966W 29km 5.6mb ( 63 obs.) 5.7Msz ( 23 obs.) NEAR COAST OF NORTHERN CHILE CENTROID. MOMENT TENSOR (HRV) Dato Used: GDSN L.P.B.: 46S, **C Centroid Location: Origin Time 01:48:12.0 0.2 Lot 27.94S 0.03 Lon 71.58W 6.62 Dep 15.0 FIX Half-duration 2.4 Pr i nc i pa I Axes:

Scale 10**17 Nm T Val- 9.36 Pig-64 Azm- 80 N 9.68 6 170 P -16.64 26 260


19 05 59 43.17 36.038N 141.550E 34km 5.5mb ( 93 obs.) 5.6Msz ( 18 obs.) NEAR EAST COAST OF HONSHU, JAPAN CENTROID, MOMENT TENSOR (HRV) Data Used: GDSN L.P.B.: 34S, 69C Cent ro i d Locat i on: Origin Time 05:59:45.0 0.3 Lot 35.93N 0.04 Lon 141.83E 0.04 Dep 30.3 2.2 Hoif-durotion 1.5 Principal Axes:


Best Double Coup Ie:Mo-2.6*10* 17 NP1:Strike-201 Dip-19 Slip- 76 NP2: 36 72 95

19 15 53 52.84 12.147N 95.082E 25km5.4mb (113 obs.) 5.0Msz ( 13 obs.)ANDAMAN ISLANDS, INDIACENTROID, MOMENT TENSOR (HRV)Data Used: GDSNL.P.B.: 29S, 47CCent raid Locot i on:Origin Time 15:53:57.6 0.3Lot 12.62N 0.06 Lon 95.75E 0.05Dep 15.0 FIX Half-durotion 1.0Pr i nc i poI Axes:

Scale 10**16 NmT Val- 10.96 Pig- 0 Azm-129 N -3.82 30 219 P -7.14 60 38

Best Double Coup Ie:Mo-9.1 19* 16 NP1:Strike-192 Dip-52 Slip 129 NP2: 65 52 -51

19 16 01 10.29 26.674S 70.954W 20km 5.4mb ( 30 obs.) 4.8Msz ( 13 obs.) NEAR COAST OF NORTHERN CHILE CENTROID, MOMENT TENSOR (HRV) Dato Used: GDSN L.P.B.: 23S, 35C Cent roi d Locot i on:Origin Time 16:01:14.90.4 Lot 27.02S 0.07 Lon 71.56W 0.05 Dep 15.0 FIX Hoif-durotion 1.1 Pr i nc i poI Axes:



20 06 30 25.90 9.763N 57.858E 10km5.1mb ( 53 obs.) 4.9Msz ( 8 obs.)CARLS8ERG RIDGECENTROID, MOMENT TENSOR (HRV)Doto Used: GDSNL.P.B.: 21S, 29CCent raid Locat i on:Origin Time 06:30:27.3 0.5Lot 9.62N 0.06 Lon 57.77E 0.05Dep 15.0 FIX Hoif-durotion 1.1Pr i nc i pa I Axes:

Scale 19««16 Nm T Val- 5.96 Pig- 0 Azm-220 N 0.80 0 130 P -6.76 90 180

Best Double Coup Ie:Mo-6.4*10** 16 NP1 :Strike-310 Dip-45 Slip- -90

NP2: 130 45 -90

20 09 20 32.59 56.084S 27.803W 116km 6.0mb ( 53 obs.) SOUTH SANDWICH ISLANDS REGION FAULT PLANE SOLUTION: P-Waves NP1:Strike-140 Dip-55 Slip- 90 NP2: 320 35 90

Pr i nc i poI Axes:T Pig-80 Azm- 50 P 10 230

Comment: The focal mechanism is poorly controlled and corresponds to reverse faulting. The preferred fault plane is NP2.

RADIATED ENERGYNo. of sto: 4 Focal mech. M Energy 6.6±2.7*10**13 Nm

MOMENT TENSOR SOLUTION Dep 112 No. of sto: 7 Pr i nc i poI Axes:



CENTROID, MOMENT TENSOR (HRV) Data Used: GDSN L.P.B.: 47S. **C Centroid Location: Origin Time 09:20:39.9 0.1 Lot 56.11S 0.01 Lon 27.70W 0.02 Dep 127.9 0.6 Half-duration 3.6 Pr i nc i pa I Axes:



20 14 51 59.77 29.084N 87.333E 12km 5.8mb (132 obs.) 6.0Msz ( 45 obs.) XIZANGFAULT PLANE SOLUTION: P-Wav«s NP1:Strike-355 Dip-70 Slip- -90 NP2: 175 20 -90


Comment: The focol mechanism is poorly controlled and corresponds to normal faulting. The preferred fault plane is not determined.


CENTROID, MOMENT TENSOR (HRV) Dato Used: GDSNL.P.B.: 41S, **C M.W.: 30S, 49C Cent ro i d Locat ion: Origin Time 14:52:10.8 0.2 Lot 28.87N 0.02 Lon 87.64E 0.01 Dep 15.0 BDY Ha If-durotion 3.3 Pr i nc i poI Axes:

Scale 10**18 Nm T Vol- 2.50 Pig- 3 Azm- 93 N -0.06 22 184 P -2.44 68 355

Best Double Coup Ie:Mo-2.5*10**18 NP1:Strike-161 Dip-46 Slip 121 NP2: 22 52 -62

20 21 26 39.45 28.994N 87.383E 21km5.0mb ( 70 obs.) 4.6Msz ( 3 obs.)XIZANGCENTROID. MOMENT TENSOR (HRV)Dato Used: GDSNL.P.8.: 13S, 18CCent ro i d Locot i on:Origin Time 21:26:49.1 0.9Lot 29.03N FIX;Lon 87.35E FIXDep 26.6 7.8 Half-duration 1.0Pr i nc i poI Axes:


Best Double Couple:Mo-6.0*10**16 NP1:Strike-160 Dip-16 Slip 106 NP2: 357 75 -86

21 05 04 59.19 18.042S 178.528W 589km 6.1mb ( 90 obs.) FIJI ISLANDS REGION FAULT PLANE SOLUTION: P-Waves NP1:Strike-342 Dip-90 Slip- -55 NP2: 72 35 -180


Comment: The focal mechanism is poorly controlled and corresponds to normal faulting with o large strike-slip component. The preferred fault plane is not determined.

RADIATED ENERGYNo. of sto: 21 Focol mech. F Energy 2.8±0.4*10**13 Nm


Scale 10**18 Nm T Val- 3.11 Pig-17 Azm- 14 N 0.30 SB 133 P -3.41 26 275

Best Double Couple:Mo-3.3*10**18 NP1:Strike- 56 Dip-59 Slip 173 NP2: 323 84 -32

CENTROID, MOMENT TENSOR (HRV) Data Used: GDSNL.P.8.: 43S. **C M.W.: 22S, 28C Cent ro i d Locat i on: Origin Time 05:05: 7.5 0.1 Lot 17.71S 0.01 Lon 178.42W 0.01 Dep 607.6 0.9 Half-duration 3.5 Pr i nc i poI Axes:


Best Double Couple:Mo-3.3*10**18 NP1:Strike- 66 Dip-41 Slip 177 NP2: 334 88 -49

22 11 03 43.58 34.697N 34.402E 32km5.4mb (130 obs.) 5.0Msz ( 41 obs.)CYPRUS REGIONCENTROID, MOMENT TENSOR (HRV)Doto Used: GDSNL.P.B.: 33S, 55CCent raid Locat i on:Origin Time 11:03:50.9 0 . 6Lot 34.74N FIX;Lon 34.41E FIXDep 15.0 FIX Hoif-durotion 1.2Pr i nc i pa I Axes:

Scale 10**17 NmT Val- 1.77 Pig-60 Azm-359 N -0.68 18 124 P -1.09 23 222


22 13 58 36.98 45.313N 150.337E 46km 5.5mb (133 obs.) 4.9Msz ( 46 obs.) KURIL ISLANDSCENTROID, MOMENT TENSOR (HRV) Data Used: GDSN L.P.B.: 40S, 72C Centroid Location: Origin Time 13:58:43.3 0.3 Lot 45.23N 0.04 Lon 150.51E 0.04 Dep 46.2 2.3 Ho If-durotion 1.2 Pr i nc i pa I Axes:



22 18 23 50.86 52.172N 172.889W 33km 5.3mb ( 76 obs.) 5.2Msz ( 46 obs.) ANDREANOF ISLANDS, ALEUTIAN IS. CENTROID, MOMENT TENSOR (HRV) Dato Used: GDSN L.P.B.: 41S, 94C Centroid Location:

MAR 1993 PAGE 28

Origin Time 18:23:55.2 6.2Lot 52.28N 0.64 ton 172.73W 0.03Oep 27.4 1.7 Half-duration 1.8Principal Axes:

Scale ie**17 NmT Vol- 4.98 Pig- 6 Azm-282N -2.61 74 173P -2.98 15 14

Best Double Couple:Mo-4.0*10**17NP1:Strike- 57 Dip-75 Slip- -7NP2: 149 83 -165

22 20 51 37.64 19.498N 38.734E 10km 4.9mb ( 51 abs.) 4.8Msz ( 9 abs.) RED SEACENTROID, MOMENT TENSOR (HRV) Data Used: GDSN L.P.B.: 18S. 23C Centraid Location: Origin Time 26:51:39.2 1.1 Lot 19.43N 0.09 Lon 38.59E 0.10 Dep 15.e FIX Half-duration 1.0 Principal Axes:

Scale ie**16 Nm T Val- 4.59 Pig- e Azm-225N e.ee e 135P -4.58 90 180

Best Double Couple:Mo-4.6*10**16NP1:Strike-3l5 Dip-45 Slip- -90NP2: 135 45 -90

23 00 59 32.78 19.590N 38.693E 10km5.2mb ( 83 abs.) 5.0Msz ( 14 obs.)RED SEACENTROID. MOMENT TENSOR (HRV)Data Used: GDSNL.P.B.: 22S, 34CCentroid Location:Origin Time 00:59:36.9 0.6Lot 19.85N 0.08 Lan 38.39E 6.07Dep 16.3 3.3 Half-duration 1.8Principal Axes:

Scale 10**16 Nm T Val- 8.69 Pig- 0 Azm-223 N -1.99 6 133 P -6.69 90 186

Best Double Cauple:Mo-7.7*10**16 NP1:Strike-31 3 Dip-45 Slip- -96 NP2: 133 45 -90

23 01 18 44.85 5.772S 148.676E 132km5.4mb ( 33 abs.)NEW BRITAIN REGION, P.N.G.CENTROID, MOMENT TENSOR (HRV)Data Used: GDSNL.P.B.: 21S. 30CCentroid Location:Origin Time 01:18:49.9 1.6Lot 5.53S 0.16 Lon 149.06E 0.07Dep 122.4 3.4 Half-duration 1.5Principal Axes:


Best Double Couple:Mo-1.6»18**17 NP1:Strike-326 Dip-48 Slip- 19 NP2: 223 76 136

25 02 09 20.27 49.888S 114.991W 10km 4.9mb ( 9 obs.) 5.2Msz ( 2 obs.) SOUTHERN EAST PACIFIC RISE CENTROID, MOMENT TENSOR (HRV) Data Used: GDSN L.P.B.: 20S. 36C Centroid Location: Origin Time 02:09:30.4 0.4 Lot 49.83S 0.07 Lon 115.35W 0.09 Dep 15.6 FIX Half-duration 1.0 Principal Axes:


Best Double Cauple:Ma-1.9*10**17NP1:Strike-102 Dip-71 Slip- -18NP2: 199 73 -160

25 07 08 18.93 41.800N 143.467E 34km 5.8mb (155 obs.) 5.9Msz ( 78 obs.) HOKKAIDO. JAPAN REGION CENTROID. MOMENT TENSOR (HRV) Data Used: GDSN

L.P.B.: 39S. 94CCentroid Location:Origin Time 07:08:23.2 0.2Lot 41.62N 0.02 Lon 143.84E 0.02Dep 33.6 BDY Half-duration 2.3Principal Axes:


Best Double Couple:Ma-1.1*16**18 NP1:Strike-229 Dip-18 Slip- 121 NP2: 17 74 80

25 12 28 03.85 36.013N 71.110E 94km5.3mb (122 abs.)AFGHANISTAN-TAJIKISTAN BORD REG.CENTROID, MOMENT TENSOR (HRV)Data Used: GDSNL.P.B.: 28S, 33CCentraid Location:Origin Time 12:28: 6.6 0.6Lot 35.72N 0.07 Lon 71.07E 0.06Dep 97.1 5.0 Half-duration 1.0Principal Axes:



25 13 34 35.44 45.035N 122.667W 21km 5.5mb (105 obs.) 5.4Msz ( 28 obs.) WASHINGTON-OREGON BORDER REGION CENTROID. MOMENT TENSOR (HRV) Data Used: GDSN L.P.B.: 28S. 51C Centraid Location: Origin Time 13:34:45.7 0.5 Lot 45.17N 0.04 Lan 122.07W 0.05 Dep 15.0 FIX Half-duration 1.7 Principal Axes:

Scale ie»*17 Nm T Vol- 3.17 Pig-50 Azm-251 N -0.05 36 100 P -3.13 14 359

Best Double Couple:Mo-3.2*10**17 NP1:Strike- 51 Dip-44 Slip- 32 NP2: 297 68 129

25 17 15 59.75 1.118N 129.140E 20km5.1mb ( 34 abs.) 4.5Msz ( 7 abs.)HALMAHERA, INDONESIACENTROID, MOMENT TENSOR (HRV)Data Used: GDSNL.P.B.: 21S, 30CCentroid Location:Origin Time 17:16: 5.2 1.6Lot 1.52N 0.13 Lon 128.63E 0.15Dep 15.0 FIX Half-duration 1.0Principal Axes:

Scale 10**16 Nm T Vol- 10.34 Pig-30 Azm-171 N -2.96 58 9 P -7.38 8 266


25 19 44 17.91 11.0625 163.256E 32km5.2mb ( 32 obs.) 4.8Msz ( 3 abs.)SOLOMON ISLANDSCENTROID. MOMENT TENSOR (HRV)Data Used: GDSNL.P.B.: 34S. 56CCentraid Location:Origin Time 19:44:19.5 0.5Lot 10.84S 0.66 Lon 163.59E 0.07Dep 15.0 FIX Half-duration 1.1Principal Axes:


Best Double Coup Ie:Mo-1.2«10**17 NP1:Strike-267 Dip-16 Slip- 115 NP2: 61 75 83

26 01 10 49.26 1.119N 129.050E 33km 5.0mb ( 38 obs.) 4.5Msz ( 11 obs.) HALMAHERA, INDONESIA

CENTROID, MOMENT TENSOR (HRV)Data Used: GDSNL.P.B.: 25S. 38CCentraid Location:Origin Time 01:10:56.6 1.2Lot 1.58N 0.08 Lan 128.81E 0.09Dep 38.3 6.6 Half-duration 1.0Principal Axes:

Scale 10**16 NmT Val- 7.95 Pig-10 Azm-157 N 0.54 80 337 P -8.49 0 67

Best Double Couple:Mo-8.2*ie«*16 NP1:Strike-201 Dip-83 Slip- 173 NP2: 292 83 7

26 09 25 53.61 5.607S 153.273E 40km 5.4mb ( 53 obs.) 4.8Msz ( 19 obs.) NEW IRELAND REGION, P.N.G. CENTROID. MOMENT TENSOR (HRV) Data Used: GDSN L.P.B.: 28S. 46C Centroid Location: Origin Time 09:26: 1.50.4 Lot 5.32S 0.06 Lan 153.42E 0.04 Dep 23.5 2.9 Half-duration 1.2 Pr i nc i pol Axes:

Scale 10**16 Nm T Val- 11.60 Pig- 2 Azm-110 N -2.11 24 201 P -9.49 66 15

Best Double Couple:Mo-1.1*10**17 NP1:StrIke-177 Dip-48 Slip 123 NP2: 42 52 -59

26 11 58 15.17 37.589N 21.391E 10km5.2mb ( 96 obs.) 5.2Msz ( 31 abs.)SOUTHERN GREECECENTROID, MOMENT TENSOR (HRV)Data Used: GDSNL.P.B.: 25S. 44CCentroid Location:Origin Time 11:58:20.9 0.5Lot 37.61N 0.07 Lan 21.18E 0.08Dep 15.0 FIX Half-duration 1.4Principal Axes:

Scale 10**17 Nm T Val- 1.28 Pig-24 Azm-342 N 0.65 60 203 P -1.93 18 80


26 22 52 46.93 30.692N 50.886E 30km5.1mb ( 96 abs.) 4.8Msz ( 24 obs.)NORTHERN IRANCENTROID, MOMENT TENSOR (HRV)Data Used: GDSNL.P.B.: 13S. 21CCentroid Location:Origin Time 22:52:49.7 0.6Lot 30.54N 0.08 Lon 50.65E 0.10Dep 33.0 FIX Half-duration 1.0Pr i nc i pol Axes:


Best Double Couple:Mo-5.2*10**16 NP1:Strike- 61 Dip-74 Slip- -3 NP2: 152 88 -164

28 15 00 12.53 25.01 S 176.45 W 33km5.3mb ( 4 obs.)SOUTH OF FIJI ISLANDSCENTROID, MOMENT TENSOR (HRV)Data Used: GDSNL.P.B.: 22S. 32CCentroid Location:Origin Time 15:00:18.9 0.8Lot 25.01S FIX;Lon 176.45W FIXDep 15.0 FIX Half-duration 1.1Principal Axes:



28 17 16 50.83 13.114S 175.001E 33km

PAGE 29 MAR 1993

5.4mb ( 37 obs.) 5.2Msz ( 32 obs.)FIJI ISLANDS REGIONCENTROIO. MOMENT TENSOR (HRV)Doto Used: GDSNL.P.B.: 43S. 81CCent ro i d Locot i on:Origin Tim* 17:16:48.4 0.3Lot 13.12S 0.83 Lon 175.14E 0.03Dep 15.0 BDY Hoif-duration 1.4Pr i nc i pol Axes:


Best Double Coup Ie:Mo-1.8*10»*17 NP1:Strike-288 Dip-27 Slip- -78 NP2: 94 63 -96

29 00 53 49.23 21.898S 179.215W 586km 5.3mb ( 64 obs.) FIJI ISLANDS REGION CENTROIO. MOMENT TENSOR (HRV) Data Used: GDSN L.P.B.: 17S. 25C Cent ro i d Locoti on: Origin Time 00:53:56.0 0.6 Lot 21.00S 0.09 Lon 179.48W 0.05 Dep 584.0 4.4 Half-duration 1.1 Pr i nc i pa I Axes:


Best Double Couple:Mo-1.0»10»»17 NP1:Strike-147 Dip-44 Slip 152 NP2: 36 71 -49

29 63 50 53.13 13.387N 120.484E 58km5.6mb ( 98 obs. )MINOORO. PHILIPPINE ISLANDSCENTROID, MOMENT TENSOR (HRV)Data Used: GDSNL.P.B.: 43S. 94CCent raid Locot i on:Origin Time 03:50:54.5 0 . 2Lot 13.37N 0.03 Lon 120.31E 0.03Dep 33.4 2.0 Half-duration 2.0Pr i nc i pa I Axes:


Best Double Coup Ie:Mo-7.8*10**17 NP1:Strik«-299 Dip-24 Slip- 43 NP2: 169 74 108

29 06 05 49.19 14.934S 167.257E 113km 5.3mb ( 42 obs.) VANUATU ISLANDSCENTROID, MOMENT TENSOR (HRV) Data Used: GDSN L.P.B.: 17S, 18C Cent raid Locot i on:

Origin Time 06:05:55.1 1.4Lot 14.89S 0.20 Lon 167.02E 0.13Dep 117.0 6.8 Half-duration 1.0Pr i nc i pa I Axes:


Best Double Coupl«:Mo-1.1 * 10**17NP1:Strike-283 Dip-25 Slip- -20NP2: 32 82 -113

29 06 57 19.56 53.039S 27.396E 10km5.9mb ( 65 obs.) 5.3Msz ( 27 obs.)SOUTH OF AFRICACENTROID, MOMENT TENSOR (HRV)Data Used: GDSNL.P.B.: 43S. 83CCentra i d Locot i on:Origin Time 06:57:23.6 0.2Lat 52.80S 0.02 Lon 27.69E 0.05Dep 15.0 FIX Half-duration 1.6Pr i nc i pa I Axes:

Scale 10»»17 Nm T Vol- 4.09 Pig- 3 Azm-195 N 0.68 19 104 P -4.77 70 293

Best Double Couple:Mo-4.4*10»*17 NP1:Strike-304 Dip-46 Slip- -62 NP2: 88 51 -115

29 15 20 38.68 27.978N 52.754E 27km5.0mb ( 78 obs.) 4.8Msz ( 23 obs.)SOUTHERN IRANCENTROID, MOMENT TENSOR (HRV)Data Used: GDSNL.P.B.: 32S. 50CCent ro i d Locot i on:Origin Time 15:20:44.1 0.7Lat 27.98N 0.05 Lon 52.30E 0.04Dep 40.0 FIX Half-duration 1.0Pr i nc i pa I Axes:



30 05 23 57.95 22.089S 67.325W 184km 5.3mb ( 68 obs.) CHILE-BOLIVIA BORDER REGION CENTROID, MOMENT TENSOR (HRV) Doto Used: GDSN L.P.B.: 38S. 81C Cent ro i d Locot i on: Origin Time 05:24: 3.8 0.2 Lot 21.98S 0.02 Lon 67.28W 0.02 Dep 179.5 0.8 Half-duration 2.0 Pr i nc i pa I Axes:

Scale 10**17 NmT Vol- 6.51 Pig-31 Azm-119

N -0.10 37 2P -6.41 38 237

Best Double Coup Ie:Mo-6.5*18** 17NP1:Strike-264 Dip-37 Slip- -6NP2: 359 86 -127

31 03 36 12.52 23.469N 123.586E 53km 5.3mb ( 98 obs.) SOUTHWESTERN RYUKYU ISLANDS CENTROID, MOMENT TENSOR (HRV) Doto Used: GDSN L.P.B.: 16S. 31C Centroid Location: Origin Time 03:36:12.9 0.5 Lot 23.47N 0.07 Lon 123.79E 0.05 Dep 37.7 4.3 Half-duration 1.2 Pr i nc i pa I Axes:



31 03 42 07.67 22.756S 179.249E 617km5.3mb ( 67 obs.)SOUTH OF FIJI ISLANDSCENTROID. MOMENT TENSOR (HRV)Doto Used: GDSNL.P.B.: 29S. 62CCent ro i d Locat i on:Origin Time 03:42:12.6 0.2Lot 22.36S 0.02 Lon 179.35E 0.03Dep 609.9 1.6 Half-duration 1.7Pr i nc i pa I Axes:

Scole 10»*17 Nm T Vol- 4.18 Pig- 7 Azm-207 N -0.06 28 113 P -4.12 61 310

Best Double Couple:Mo-4.2*10**1 7 NP1-.Strike-325 Dip-45 Slip- -49 NP2: 94 58 -123

31 10 18 14.25 17.322N 100.910W 30km5.4mb ( 61 obs.) 5.0Msz ( 24 obs.)GUERRERO. MEXICOCENTROID, MOMENT TENSOR (HRV)Doto Used: GDSNL.P.B.: 32S. 52CCent ro i d Locat i on:Origin Time 10:18:18.9 0.3Lot 17.29N 0.03 Lon 100.89W 0.04Dep 26.2 2.4 Ho If-durotion 1.5Pr i nc i pa I Axes:

Scole 10»»17 NmT Vol- 1.87 Pig-64 Azm- 34 N 0.17 6 292 P -2.03 25 199


Compiled by Pingsheng Chang. Will is S. Jacobs, Stuart K. Koyanogi, Christina K. Lovonne, John H. Minsch, Russell E. Needhom, Woverly J. Person, Bruce W. Presgrove and William H. Schmieder.

PAGE 30

01 March 1993 01:39:27.88 Irian Jaya, Indonesia

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02 March 1993 00:23:59.64 Flores Region, Indonesia

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PAGE 31

06 March 1993 03:05:49.87 Santa Cruz Islands Region

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06 March 1993 10:02:06.95 South of Fiji Islands

MDJ (BHZ)P x4

SSE (LHZ) p xieGUMO (LHZ) ^^jvVW^-'

'\r~\i

KMI (LHZ)P x26

CTAO (BHZ)

NWAO (LHZ)

CHTO (LHZ) -

YSS (LHZ)P xlO

RSSD (LHZ)Pdiff x28

(LHZ)

ANMO (LHZ)P xI3

RAR (LHZ)p - '

TUC (LHZ)P x8 7

LZH (LHZ)Pdiff x39

SPA (LHZ)

15-,

51 1 0-1-

M and B0 1

Time (min)

XAN (BHZ) p xe x '

01234

Time (min)

PAGE 32

12 March 1993 14:01:35.40 Fiji Islands Region

LON (LHZ)P x6

YSS (BHZ)

CMB (LHZ)P x7 V '

SBC (LHZ)P x4 '

ANMO (BHZ)P x2 '

CCM (LHZ)Pdiff x27

RAR (LHZ)P xl '

0 1 3

Time (min)01234

Time (min)

15 March 1993 16:08:57.88 Near Coast of Northern Chile

CCM (LHZ)P x2

WMOK (LHZ)P x2 '

ANMO (LHZ)P x2 '

TUC (BHZ)P xl v 7

SBC (BHZ)P xl V '

WDC (LHZ)P x2 V '

COR (LHZ)P x3 '

KIP |LHZ)

15

RAR (LHZ)P x2 V '

M and B0 12

Time (min)

HRV (LHZ)P x3 '

CBM (LHZ)P x3 '

YSS (LHZ)PKPdf x 1

PAB (LHZ)P

SPA (LHZ)

TAU (LHZ) Pdiff xl 1

15

01334

Time (min)

PAGE 33

20 March 1993 09:20:32.59 South Sandwich Islands Region

BDF (LHZ)P xll V '

BDF (MHZ)P x2 V '

HRV (LHZ)Pdiff x39

ZOBO (LHZ)P x6 V '

NNA (BHZ)P x2 V '

CCM (LHZ)Pdiff x43

MIAR fLHZ)Pdiff x42

WMOKPdiff x29

ANMO (LHZ)Pdiff x39

M and B

Time (min)

PAB CLHZ)Pdiff x2l

'l/y\/WWWVGRFO (LHZ)Pdiff x42

YSS (LHZ)PKPdf x9

MDJ (LHZ)PKPdf xl3

SSE (BHZ)PKPdf xl

ERM (BHZ)PKPdf X2

PKPdf xfl

CTAO (LHZ)Pdiff x34

01334

Time (min)

20 March 1993 14:51:59.77 Xizang

H1A (LHZ) p xio y

WMO (LHZ)Pn

TLY (BHZ)P x2

K1V (BHZ)P x4 '

PAB (LHZ)P x9

ZOBO (LHZ)PKPdf x22

MAJO (LHZ)

MAJO (BHZ)

TAU (LHZ)P xl4 '

M and B012

Time (min)

CTAO (BHZ)P x3 v

15

YSS (LHZ)P x?

MDJ (LHZ)P x8

LZH (LHZ)Pn x2

BJI (LHZ)P x3

ENH (LHZ)P xl

SSE (LHZ)P x3 V '

TATO (LHZ)P x3

IZ (LHZ)

GUMO (LHZ)

01234Time (min)

PAGE 34

21 March 1993 05:04:59.19 Fiji Islands Region

MDJ (LHZ)P xl9

MAJO (LHZ)P x]2

BJI (LHZ)P x!4V

GUMO (LHZ)P x3 v '

SSE (BHZ) ~rP x2 I

TATO (LHZ)P x6

CTAO (LHZ)P x2 V '

QIZ (LHZ)P x4

CHTO (BHZ)P x2

J] M ar0-1 . , i r

and B01234

Time (min)

COR (LHZ)P x5 V '

iT"" V~*KIP (LHZ)

CMB (BHZ)P xl v

PAS (LHZ)

TUC (LHZ)

(BHZ)

-A/ V^

RAR (LHZ)P x4 V

CCM (LHZ)Pdiff xf4

XAN (LHZ)P xQ

ZOBO (LHZ)Pdiff x20

01234

Time (min)

Earthquake Focal Mechanisms for March 1993

30°E 60°E 90°E 120°E 150°E 180° 150°W 120°W 90°W 60°W 30°W

60"N-

30°N-

30°S-

60°S-

V

- 60°N

- 30°N

- 30°S

- 60°S

30°E 60°E 90°E 120°E 150°E 180° 150°W 120°W 90°¥ 80°¥ 30°W

50°

O

'70 km *70 km ', . O i D Magnitude <5.0 \ O D Magnitudif 5.0-5.9

i \

Earthquake epicenters in Alaska and adjacent regions for March, 1993.

75° 70°120° 115° 110° 105° 100° 95

EXPLANATION 7 O Mognitude <5.0 O Mognitude 5.0-5.9

Earthquake epicenters in the conterminous United States and adjacent regions for March, 1993.

60°

- -

EXPL

ANAT

ION

Dep

th

<70km

70

-300

km

>

300

km

x D

A

Mag

nitu

de <

6.0

X

D

! A

M

agni

tude

6.0

-6.9

X

D

' A

M

agni

tude

7.0

-7.9

90°

LrU

S G

OV

ER

NM

EN

T P

RIN

TIN

G O

FF

ICE

19

93

-83

9-5

41

Ear

thqu

akes

loc

ated

in M

arch

, 19

93.