93
BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKA Arnold H. Bouma U.S. Geological Survey Monty A. Hampton 345 MiddlefieId Road Thomas P. Frost Menlo Park Michael E. Torresan California 94025 Robert C. Orlando *U.S. Geological Survey John W. Whitney 800 A. Street Anchorage, Alaska 99501 U.S. Geolo-jical Survey OPEN-FILE REPORT 78 - 236 Menlo Park, California March 1978 This report is preliminary and has not been edited or reviewed for conformity with Geological Survey standards and nomenclature.

BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

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Page 1: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

BOTTOM CHARACTERISTICS OF LOWER COOK INLET,

ALASKA

Arnold H. Bouma U.S. Geological SurveyMonty A. Hampton 345 MiddlefieId RoadThomas P. Frost Menlo ParkMichael E. Torresan California 94025Robert C. Orlando *U.S. Geological SurveyJohn W. Whitney 800 A. Street

Anchorage, Alaska 99501

U.S. Geolo-jical Survey OPEN-FILE REPORT 78 - 236 Menlo Park, California

March 1978

This report is preliminary and has not been edited or reviewed for conformity with Geological Survey standards and nomenclature.

Page 2: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

INDEX

Page Introduction j_

Bathymetry 3

Distribution of bedforms 7

Grain size parameters 9

Introduction 9

Statistical parameters 9

Graphics representation 10

Parameters ^0

Method of moments ^3

Cook Inlet samples 13

Generalized isopach map of Quaternary sediments 19

References 22

Appendix I: computer printout of sampling station 23

data, grain size values, sediment parameters and

graphic presentation of the surficial samples

analyzed from lower Cook Inlet.

Sample S 14 24

Sample S 15 29

Sample S 28 34

Sample S 29 39

Sample S 30-1 44

Sample S 30-2 49

Sample S 31 54

Sample S 34 59

Sample S 44-1 54

Sample S 44-2 69

Sample S 47 74

Page 3: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

II

Page

Sample S 152 79

Sample S 153 84

Summary "mean": 1st moment 89

Summary "standard deviation": 2nd moment 90

Folded:

Plate 1. Bathymetry in 5 m contour intervals, 1:250,000.

Plate 2. Distribution of bedforms according to height, 1:250,000.

Page 4: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

INTRODUCTION

Lower Cook Inlet is part of the estuarine system connecting Anchorage with

the Pacific Ocean. The area is of high interest to federal, state, industrial

and private groups since lease sale Cl was held during the fall of 1977. As

part of an overall environmental assessment, a marine geologic study was per­

formed during the summer of 1976 (Fig. 1). Seismic reflection information was

collected on board the R/V SEA SOUNDER using single channel sparker, uniboom

and 3.5 kilohertz seismic profiling systems. In addition, side-scan records

were obtained and a bottom television unit deployed. Bottom sediments were

collected with a Van Veen grab sampler, modified by A. Souter (Scripps

Institution of Oceanography) and with a gravity corer (Bouma and Hampton, 1976;

Hampton and Bouma, 1976).

During the same time period Petty-Ray Geophysical Inc. conducted a seismic

survey for the U. S. Geological Survey, Conservation Division, in Anchorage,

Alaska. Part of their data are incorporated in this report.

Lower Cook Inlet is characterized by a rather smooth bottom and strong

tidal currents. The surfical sediments are sand to pebbly sand in the south,

becoming pebbly to the north (Bouma and Hampton, 1976). The high-velocity

currents have produced a variety of bedforms of different sizes and shapes

(Bouma et al. 1977a; Bouma, Hampton and Orlando, 1977b). Scanning electron

microscopy examinations of surface characteristics of quartz grains (Hampton

et al., 1978) provided information on movement characteristics of the sand

within and outside the field of bedforms.

This report contains information on four major bottom aspects of lower

Cook Inlet: bathymetry, distribution of bedforms, grain-size parameters of

bottom samples, and a map of Quaternary sediment thicknesses.

Page 5: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

153* 152*

10 20

10

Nautical Miles

20 30 40

60 C K ilameters

Tuxedni Bay

Augustine «^^\ Island

59<

Kamishak Bay

153' 152'

Figure I.-Location map of lower Cook Inlet, Alaska

Page 6: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

BATHYMETRY

Bathymetric information obtained during the 1976 R/V SEA SOUNDER cruise

was combined with the bathymetric results collected by Petty-Ray Geophysical;

and additional information from the U. S. Coast and Geodetic Survey Boatsheets.

All information was converted to the metric system and contours drawn at 5 m

intervals. Petty-Ray Geophysical had all their measurements tidally corrected.

Although the overall bathymetry of lower Cook Inlet is rather smooth, a

number of characteristic bottom morphologic features are worth mentioning (Fig. 2,

Enclosure 1). South and south southwest of Kalgin Island (island cut off by

upper boundary of Fig. 2), down to Tuxedni Bay, the bathymetry shows some minor

depressions. The eastern half of the northern part of lower Cook Inlet is

rather smooth and slopes to the west.

The central area of lower Cook Inlet between Tuxedni Bay and a line between

Kenai Peninsula and Augustine Island is rather smooth with a major depression

running approximately north-south through its center. The eastern half con­

tains a few minor depressions that line up in a direction parallel to the major

depression without revealing the existence of a major linear depression. Another

channelized depression exists along the northwestern side of Kenai Peninsula

forming the major connection between Cook Inlet and Kachemak Bay. This central

part of lower Cook Inlet is also the major area of bedforms (Fig. 3).

Between the central and southern part of lower Cook Inlet a significant

ramp occurs, starting at about 70 m water depth and dropping to about 115 m. The

ramp is very pronounced on the western side off Cape Douglas. The ramp between

the central and southern parts of lower Cook Inlet has a northerly indentation

that more or less lines up with the major central depression. This combined

Page 7: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

system may represent the paleo channel of Cook Inlet. The central area of

southern lower Cook Inlet is a rather uniformly sloping area.

Connections between Cook Inlet and the Pacific Ocean via the Kennedy and

Stevenson Entrances reveal complicated bathymetry with many local highs and

lows of tectonic origin. A set of highs are present south of the Chugach Islands,

bounded by a depression with local deeps on its southern side. It is likely

that the major tidal waters flow through this depression and then split into

a northern component along Kenai Peninsula into Kachemak Bay and through the

eastern half of lower Cook Inlet, while another part of the incoming water

deflects off the ramp and turns in a counter clockwise direction toward Shelikof

Strait. The bathymetry of Stevenson Entrance is less complicated but still

reveals tectonic influences.

Insufficient data are available on the currents and tidal flows to fully

establish the importance of the bathymetry on circulation in the inlet. A

program by NOAA/PMEL during FY78 hopefully will shed light on these questions.

Published information on surface currents via driftbottle studies is discussed

by Burbank (1977) but lack of current-meter data prevents further discussion.

Page 8: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

153

LOWER COOK INLET, ALASKA BATHYMETRY

Sources: Ptlty Roy Gtopfiysicol Division U.S.Geological Survsy, Conservation Division, Anchorage. Alaska

Soumo, A. H., Hampton. M.A.. and Frost, T.P., Aeril. 1977, U.S. Gsologicol Survsy, Pacific Arctic Branch of Mdrfns Gttlogy , Mml> Park, California.

153* 152*

Figure 2. Bathymetry map of lower Cook Inlet, Alaska

Page 9: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

LOWER COOK INLET

DISTRIBUTION OF BED FORMS

45' 13' 43'

3EDFORM FICLDS, AVERAGE 'AVE HEIGHT 2-5 METERS.

BEDFORM FIELDS, AVERAGE WAVE HEIGHT LESS THAN 2 M.

/ ISOLATED SAND RIBBONS

SMALL BEDFORMS OBSERVED

-15'

/^ CHISIK 1 ISLAND

30' 15' 153° 45' 30' 15' 152* 45' 30'

Figure 3. Distribution of bedforms in lower Cook Inlet

Page 10: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

DISTRIBUTION OF BEDFORMS

A combination of Petty-Ray Geophysical and R/V SEA SOUNDER seismic high-

resolution data and side-scan sonar was used to construct a distribution map

of bedforms. Figure 3 shows that only the central part of lower Cook Inlet

contains significant bedforms. This may be accidental due to insufficient

trackline coverage in the surrounding areas. These latter areas do not contc

any bedform fields of significant extent, but minor fields may be present.

A major type of bedforms are sand waves that occur in three important

size classes (Bouma et al., 1977a): 1) wave length less than 8-15 m and wav<

heights not exceeding 2 meters, 2) wave lengths ranging from 50-150 m with

wave heights ranging from 3-5 m, and 3) wave lengths ranging from 400-1000 m

with wave heights between 5-10 m. Sand waves in lower Cook Inlet normally a

strongly asymmetric rippled bodies of sand with relatively smooth flanks and

straight to slightly sinuous crests.

Dunes can occur in similar medium and large size classes. These bedfor

differ from sand waves in that their shapes are more irregular, their crests

very sinuous and discontinous, and their wave length/wave height ratio is

smaller.

Sand ridges are only known from the southeast corner of the bedform fie

These are larger asymmetric sand bodies with wave lengths ranging 800-1000 it

and wave heights from 8-10 m. Their crests, in contrast to sand waves and

dunes, are parallel to the main current direction. Medium sand waves occur

the flanks of sand ridges. However, the crests of the medium-sized waves ai

not parallel but oblique to the crest and sand ridge, presumably due to forv

upward movement under the action of helical currents (Bouma et al., 1977a; I

Hampton and Orlando, 1977b).

Page 11: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

Another important type of bedform is the sand ribbon, a narrow, thin

body of sand, oriented parallel to the main current. Small sand waves, with

crests perpendicular to the sand ribbon, normally cover the surface of the ribbon.

The largest sand waves are concentrated in a number of fields in the

southern half of the centralpart of lower Cook Inlet. They are always surrounded

by medium or small-sized sand waves. A number of fields of large sand waves are

located in the major depression.

Immediately north of the ramp is a smooth area of sea floor that does not

contain bedforms large enough to be detected on high resolution seismic profiles

or side-scan sonar records. This "smooth" area is bounded on three sides by

large sand waves.

Sand ribbons can only be detected on high quality side-scan sonar records,

which may be reason that only a limited number are displayed in figure 3. They

only occur where the sand cover is thin or non-existent.

No public data are available to compare the distribution and individual

characteristics of the sand waves, especially the larger ones. Although

bottom television observations indicate grain motion up to 30 cm/sec over the

crests of large sand waves and 1-5 cm/sec in their troughs, and bottom currents

may be as high as 1 knot (50 cm/sec), no information is available to migration

of the large sand bodies. Scanning electronic microscopy examination on quartz

grain surface textures showed that grains are not widely dispersed into and

out of the large area of bedforms (Hampton and others, 1978).

Page 12: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

GRAIN SIZE PARAMETERS

Introduction

Grain size analyses were run in the laboratory using Rapid Sediment

Analyzers. This technique is based on fall velocity through a high column of

water. The data were next punch carded and fed to the computer under the

heading sieve. The program provides several types of data such as cummulative

percentages, statistical parameters and graphic presentations.

This section includes a discussion of the parameters provided, the graphic

presentations, and a brief discussion about the findings and preliminary

conclusions drawn from this aspect of the study.

Statistical Parameters

Quantitative evaluation and comparison of grain size distributions of

sediment samples is possible through the use of statistical parameters. The

two methods of determining the size distribution of a sand-size sample are

sieving and settling tubes. Both systems give size data in millimeters and/or

phi (cj>) units, though the sieving method measures the physical size of particles,

whereas the settling tube measures the settling velocities of the grains through

water, which are then compared to the settling velocities of quartz spheres of

known size. In other words, a small heavy mineral and a large light mineral

may be hydraulic equivalents and fall into the same size range as measured by

a settling tube, but the same two grains would be measured as being of quite

different diameter in a sieve analysis.

Page 13: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

10

Graphic Representation

The data obtained in a grain size analysis may be plotted in several

ways. All methods use grain size as the abscissa and some measure of percent­

age frequency as the ordinate. It is usual to plot grain size in phi units,

which relate logarithmically to millimeters 25: -log d = <j>, where d is grain

diameter, and <j> i s size in <j> -units.

The histogram is a bar graph, where the height of each bar represents the

weight percent of grains in a particular size class. A frequency curve is a

smooth curve through the midpoints of the bar tops. These types of plots are

only pictorial representations, statistical parameters cannot be determined

from them.

The cumulative curve is plotted by adding percentages in succeeding size

grades and drawing a smooth curve through the points. On arithmetic ordinate

paper the curve normally is S-shaped.

From the size analysis and its cumulative curve obtained through sieving

or settling tube methods, statistical parameters can be calculated that

quantitatively describe features of the sediment. The parameters and certain

combinations of parameters can be compared and can give an indication of

sedimentary environments of deposition.

Parameters

The parameters calculated in this study include:

1) "mode": the most frequently occurring grain size or sizes. It

corresponds to the inflection points in the cumulative curve or the highest

points on the frequency curve. The mode is useful in transport studies,

especially when two or more sources are contributing sediment;

Page 14: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

11

2) "median": half the particles by weight are larger than the median, and

half are finer. It is easily found on the cumulative curve, it corresponds to

the 50% mark;

3) "mean" (M ) : the average grain size. Several formulas can be used in z

calculating the mean. The most inclusive graphically derived is that given

by Folk (1968) :

M = ($16+$50 +$84)/3 (1)2

where 4)16, $50, $84 represent the size at 16, 50, and 84 percent of the sample

by weight. Folk's formula is superior to that of Inman (1952) which is based on

only two values. The Trask (1950) mean size is also included in our computer

printout (App. I) although few people use it anymore.

4) "sorting": several methods exist for graphically determining the sorting,

or uniformity, of sediments. In general, the best measures of sorting are those

that encompass the greatest part of the size distribution. Folk (1968) intro­

duced the "inclusive graphic standard deviation" (0 ) . It is considered to be

the best graphically derived method of measuring the grain size variation in a

sample. It is calculated using the formula:

_ * 4 6.6

where $84, (f>16, $95, $5 represent the phi values at the 84, 16, 95, and 5 percent

markes on the cumulative curve. A verbal classification scale for sorting was

present by Folk (1968): a <0.35 , very well sorted; 0.35-0.50$ , well sorted;

0.50-0.71$ , moderately well sorted; 0.71-1.0$, moderately sorted; 1.0-2.0$

poorly sorted; 2.0-4.0$, very poorly sorted; >4.0$ , extremely poorly sorted.

Folk's method includes more of the curve than the measure introduced by Inman

(1952) where sorting (a_) = ($84 -$16) /2. Trask 's (1950) sorting coefficientG

(SQ) is used only with millimeter values and only includes the middle 50% of

the curve .

Page 15: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

12

5) "skewness": cumulative curves for sediment-size distributions may be

the same in average size and sorting though they may be quite different in their

degree of symmetry. Measures of skewness determine the degree to which a curve

approaches symmetry. The most commonly used measure of skewness is Folk's

"inclusive graphic skewness" (1968) , determined by the formula:

= + $84 - 2050 $5 + $95 - 2$50 , 3) 1 2 ($84 - $16) + 2 ($95 - $5)

This formula is preferred as it includes the skewness of the "tails" of the

curve as well as the central portion. Other methods for determining skewness,

notably those of Inman (1952) and Trask (1950) do not measure the tails of the

curve and are of less value than Folk's (1968) method.

Symmetrical curves have a skewness equal to 0.00; those with a large^

proportion of fine material are positively skewed, those with a large proportion

of coarse material are negatively skewed. A verbal classification for skewness

suggested by Folk (1968) includes Sk from -1.00 to -0.30: strongly fine skewed;

+.30 to +0.10: fine skewed; +0.10 to -0.10: near symmetrical; -0.10 to -0.30:

coarse skewed; and -0.30 to -1.00: strongly coarse skewed.

6) "Kurtosis": a measure of "peakedness" in a curve. A normal Gaussian

distribution has a kurtosis of 1.00: it is a curve in which the sorting in the

tails equals the sorting in the central portion. If a curve is better sorted

in the central part of the curve than in the tails, it is said to be excessively

peaked, or leptokurtic; if it is better sorted in the tails than in the central

portion, it is flat-peaked or platykurtic. Folk's (1968) formula for kurtosis

is given by__ $95 - $5

g 2.44($75 - $25) - (4)

For normal curves K =1.00, leptokurtic curves have K >1.00, platykurtic<? y

curves have K <1.00. g

Page 16: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

13

Method of Moments

All the above statistical parameters can be calculated using the method

of moments. This method gives a somewhat truer picture of the sediment

characteristics, but when calculated by hand, it is a tedious process. The

computer program used in this study performs all the necessary calculations,

greatly simplifying the determination. The first moment measure corresponds

to the mean, the second to the standard deviation, the third to the skewness,

and the fourth to the kurtosis.

Cook Inlet Samples

Surficial sediment samples from lower Cook Inlet were taken in June and

July of 1976 aboard the R/V Sea Sounder. A modified van Veen grab sample,

capable of taking an undisturbed surface sample of 40x60x30 cm was used to

collect the unconsolidated sediments. The top two centimeters of each grab

sample were used for grain size analyses.

Samples were taken from the bedform fields that occupy much of central

lower Cook Inlet (Fig. 4). Water depths range from 40 to 100 m, averaging

about 70 m. The area is one of very strong currents. Surface water velocities

of 3-5 knots (150-250 cm/sec) are common during flood and ebb tides.

Grain size analyses of the samples show several gross trends. The mean

grain size decreases more or less uniformly from north to south in the samples

analyzed (Fig. 5). Concomitant with the decrease in grain size from north

to south is an increase in the degree of sorting of the samples as indicated by

the decrease in standard deviation (Figs. 6 and 7).

The apparent decrease in grain size from north to south in lower Cook Inlet

may be due to one or several of the following: 1) it may simply be an artifact

of sampling; not enough samples were taken to have a high confidence level in

Page 17: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

14

153' 152'

60*

59 C

Mount Douglas

A

15

14

,47

152

28

29,30

J53

Figure 4. - Sample location map, lower Cook Inlet.

Page 18: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

MEAN GRAIN SIZE

f\3 roro _ oooIj> roOooo)!^roOcob)-^

*! 2,5* oc 33 .CD -y -«J

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Page 19: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

/(p

O

HI O

Oor

1.5

1.2

1.0

0.9

0.7

0.6

0.5

0.4

H 0.3CO

0.2

O

O

i i t t i i i i

0123

MEAN GRAIN SIZE (^) Figure 7.- Mean grain size vs. sorting, lower Cook Inlet.

Page 20: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

17

the results, 2) it may reflect an original variation in mean grain size from

north to south in lower Cook Inlet, 3) or it may be due to progressive sorting

of the sediments by currents.

A systematic variation in grain size after the last glacial retreat from

Cook Inlet is unlikely as glaciers are very poor sorting agents; glacial deposits

are generally extremely poorly sorted mixtures of all size grades up to very

large boulders. A more probably explanation is that the decrease in mean size

and increase in sorting from north to south is due to progressive sorting by

transport and winnowing.

Several lines of evidence support this interpretation. First, the majority

of bedforms are consistently orientated with their steep faces toward the south

indicating net transport in that direction (Bouma and Hampton, 1976; Bouma

et al., 1977a) . In addition, studies of quartz grain micro-surface textures in­

dicate dominantly mechanical abrasion typical of aqueous transport in the

bedform fields (Hampton and et al,, 1978). Quartz surface microtextures

commonly associated with glacial action are also present in lower Cook Inlet,

though, for the most part, these occur in an unmodified state rarely in the

bedform fields (Hampton et al., 1978). Most original glacial micro-

textures present in the bedform fields have been overprinted with subaqueous

transport features, indicating sufficient transport to subdue the original

textures.

Inspection of the skewness and kurtosis reveals little information, primarily

because so few samples are represented. The range in skewness is -0.5 to 0.4;

most samples, however/ are very close to symmetrical (0.0) in their size

distribution (Fig. 8). Kurtosis shows a greater variation, from 0.28 to 1.96.

There appears to be a slight tendency for the sediments to become negatively

Page 21: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

0.6

0.5

0.4

0.3

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31

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Page 22: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

19

skewed and platykurtic from north to south (Fig. 9). Grain size data are

presented in Appendix I.

GENERALIZED ISOPACH MAP OF QUATERNARY SEDIMENTS

Sparker records from the 1976 cruise of the R/V SEA SOUNDER were used to

make thickness measurements at 15 minute shot point positions of the uppermost

sedimentary unit in lower Cook Inlet (Fig. 10). From these data, a generalized

isopach map was constructed (Fig. 11).

Thicknesses were measured from the sea floor to an angular unconformity

that shows distinctly on most of the records. Several thickness measurements

were uncertain or indeterminable because of poor-quality records, shallow

penetration, or the occurrence of the unconformity within the bubble pulse or

a sea-bottom multiple. Where readings of "zero" thickness were recorded, the

unconformity apparently rises to the sea floor and controls the sea floor

geometry. Variations in the thickness of Quaternary sediments throughout lower

Cook Inlet reflect a combination of variations in the elevations of the un­

conformity surface and of the sea floor.

In making the following maps, the assumption was made that the deformed

rocks below the unconformity are of Tertiary age, judging from the on-land

geology, and that the generally flat-lying sediments above the unconformity

are primary and reworked glacially derived sediments deposited during Pleistocene-

Holocene upper Tertiary age.

The thickness measurements were contoured only generally. Many thickness

variations greater than one contour interval were ignored because they involve

only one or two measurements. Consequently, many small basins and highs exist

that do not show on the map. The areas south of Augustine Island and

surrounding the Barren Islands are especially complex, and major portions of

these areas were not contoured.

Page 23: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

60°-

59°

/> // *.n i §, vFJ' I »%* ?° °* * " ,n ^.* *o "V

O * 9 , o> '

LEGENDo two-woy trov«l tlm« thieknM* of

Quat«rnory Mdimcnt*(xlO mlllitceandi)

rs 7T La *J uncertain r*odlngt

I" °J !hlekn«MM not d«t*rminafal« at tlMM pointi

Figure 10. - THICKNESS MEASUREMENTS OF QUATERNARY SEDIMENTSLOWER COOK INLET

Page 24: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

I53°W 152*

60°N

59°

LEGEND

Thickness contour at 20 milliseconds (two-way) interval. ( I millisecond equals I meter thickness for assumed acoustic velocity of 2000 m/sec)

10 20NM

10 20 30 Km

I53°W 152*

Figure 11.-GENERALIZED ISOPACH MAP OF QUATERNARY SEDIMENTS

LOWER COOK INLET

Page 25: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

22

REFERENCES

Bouma, A. H. and Hampton, M. A., 1976, Preliminary report on the surface

and shallow subsurface geology of lower Cook Inlet and Kodiak Shelf,

Alaska: U. S. Geological Survey Open-File Report 76-695, 36 p., 9 maps.

Bouma, A. H., Hampton, M. A. and Orlando, R. C., 1977b, Sand waves and other

bedforms in lower Cook Inlet, Alaska. Marine Geotechnique, v.2, p.291-308.

Bouma, A. H., Hampton, M. A. Wennekens, M. P. and Dygas, Y. A., 1977a, Large

dunes and other bedforms in lower Cook Inlet: Offshore Technology Conf.

OTC 2737, p. 79-90.

Burbank, D. C., 1977, Circulation studies in Kachemak Bay and lower Cook Inlet.

Rept. Alaska Dept. Fish and Game, Marine/Coastal Habitat Management,

Anchorage, Alaska, 206 p.

Folk, R. L., 1968, Petrology of Sedimentary Rocks: Austin, Texas, Hemphills,

170 p.

Hampton, M. A. and Bouma, A. H., 1976, Seismic profiles of lower Cook Inlet

and Kodiak Shelf, R/V SEA SOUNDER, June-July 1976: U. S. Geological

Survey Open-File Report 76-848, 36 p., 9 rolls microfilm, 4 maps.

Hampton, M. A., Bouma, A. H., Torresan, M. C., and Colburn, I. P., 1978, Analysis

of microtextures on quartz sand grains from lower Cook Inlet: Geology,

v.6, p. 105-110.

Inman, Douglas L., 1952, Measures for Describing the Size Distribution of

Sediments: Jour. Sed. Petrology, v. 22, 3, p. 125-145.

Trask, Parker D., 1950, Dynamics of Sedimentation, in Trask, Parker D.,

ed.. Applied Sedimentation: New York, New York, John Wiley and Sons,

p. 3-40.

Page 26: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

23

APPENDIX I

Computer printout of sampling station data, grain size values, sediment

parameters and graphic presentations of the surficial samples analyzed from

lower Cook Inlet.

The computer printout shown in Appendix I gives all the pertinent data regarding

the size alalyses of the sand samples from lower Cook Inlet. Each sample has

five pages of printout; the top of each page gives the cruise identification,

sample number and type (in all cases Soutar van Veen grabs) and sample length,

which is not applicable in the case of grab samples. The first page gives

the method of analysis, total sample weight, and particle size distribution in

mm. and phi (cj>) units, and the size class ratios. Because all samples were

entirely composed of sand-size material, the ratios are in all cases non­

existent. The second page gives the interpolated values used in calculating

graphical statistics, which include Folk and Ward's (1968), Inman's (1952), and

Trask's (1950) median, mean, sorting, skewness and kurtosis values. Moment

measures and the class midpoints used in their calculation are also included

on the second page. The third page gives the mode or modes, the fourth page

presents a histogram of frequency versus size, and the fifth page gives a cumulal

curve for the sample.

Page 27: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SEA276WG

SAMPLE

TOTAL

SAMPLE

SAMPLE

CRUISE

STATION

TYPE,NUMBER

LENGTH

CENTER

LENGTH

METHODS

S276WG

S-U

S 14

M .CM

CM

1

#F;SV*20,ST= 0,H=0;WT:SV=30.3000,ST= 0.0000,H/P= 0.0000; PHI LIM:CS= 0.00,FN* 0.00

SAMPLE ANALYZED BY THE FOLLOWING METHOD(S):

....SiiE.BAlilfiE..

HEIUQC_______

2.0000-

0.0625MM

SIEVES

UNEDITED SAMPLE WEIGHTS IN GRAMS:

.SIEVES.,

__BS&___

HI&BQEUQIQHEIE.B.

30.3000

PARTICLE SIZE DISTRIBUTION:

.IflliL__

30.3000 <G

>

-EH1 ...

-0.7500

-0.5000

-0.2500

0.0000

0.2500

0.5000

0.7500

1.0000

1.2500

1.5000

1.7500

2.0000

2.2500

2.5000

2.7500

3.0000

3.2500

3.5000

3.7500

A. 0000

SIZE CLASS

GRAVEL

SAND

SILT

CLAY

MUD

CUM

_-HM_-

PEBCEMI

EEECEB

I1.6818

0.660

0.660

1.4142

1.254

1.914

1.1892

1.320

3.234

1.0000

1.485

4.719

0.8409

2.013

6.733

0.7071

3.036

9.769

0.5946

8.680

18.449

0.5000

13.366

31.815

0.4204

19.571

51.386

0.3536

19.670

71.056

0.2973

14.587

85.644

0.2500

8.812

94.455

0.2102

3.135

97.591

0.1768

0.891

98.482

0.1486

0.528

99.010

0,1250

0.363

99.373

0.1051

0.198

99.571

0,0884

0,165

99.736

0.0743

0.132

99.868

0.0625

0.132

100.000

RATIOS: O.OOOPCT

GRAVEL/SAND

100.000PCT

SAND/SILT

O.OOOPCT

SILT/CLAY

O.OOOPCT

SAND/CLAY

O.OOOPCT

SAND/MUD

GRAVEL/MUD

0.000

0.000

0.000

0.000

0.000

0.000

Page 28: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SEA276WG

CRUISE

S276WG

SAMPLE

TOTAL

SAMPLE

SAMPLE

STATION

TYPE/NUMBER

LENGTH

CENTER

LENGTH

METHODS

S-U

S U

. M

.CM

. CM

1

INTERPOLATED SIZES USED IN

tUB-EEatENl

Q&..QQ

PH

I O

.CK

O

MM

0

.97

27

GRAPHICAL STATISTICS:

MEDIAN*

1.2346

MEAN

« 1.2226

SORTING^

0.5472

GRAPHICAL STATISTICS:

1Q..QQ

16, QQ

25

.QQ

2Q*Q

Q0.512

0.718

0.887

1.235

0.7Q15

0.6080

0.5408

0.4250

-IB.ASIi-.iHHl__

MEDIAN*

0.4250

MEAN

* 0.4406

SORTING*

1.2605

SKEWNESS*

1.0193

1.555

0.3404

1.715

0.3045

2Q»QQ

1.827

0.2818

2.005

0.2491

£U!!_EEfit£i!I

PHI

MM

MEDIAN*

1.2346

MEAN

* 1.2166

SORTING"

0.4988

SKEWNESS* -0.1259 SKEW 16/84* -0.0361

SKEW 05/95« -0.4251

KURTOSIS=

1.2057

KURTOSIS*

0.9702

KURTOSIS=

0.2388

CLASS MID-POINTS(PHI) USED IN THE MOMENT CALCULATIONS:

-0.88

-0.63

-0.38

-0.13

0.13

0.38

0.63

2.88

3.13

3.38

3.63

3.88

0.88

1.13

1.38

1.63

1.88

2.13

2.38

2.63

MOMENT MEASURES:

FIRST (ABOUT ORIGIN)*

SECOND (ABOUT MEAN) *

SECOND (ABOUT MEAN)

*

_-£hi__

__OH -

1.1913

0.4379

0.3817 VARIANCE

0.6178 STANDARD DEVIATION

THIRD (ABOUT MEAN)

« -0.1876

FOURTH (ABOUT MEAN)

* 0.9987

Ol

Page 29: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SEA276WG

CRUISE

STATION

S276WG

S-14

MODAL ANALYSIS

1 MODE(S) DETECTED

--EH.1-- __ BB--

-0.750

1.6818

-0.500

1.4142

-0.250

1.1892

0.000

1.0000

0.250

0.8409

0.500

0.7071

0.750

0.5946

1.000

0.5000

1.250

0.4204

1.500

0.3536

1.750

0.2973

2.000

0.2500

2.250

0.2102

2.500

0.1768

2.750

0.1486

3.000

0.1250

3.250

0.1051

3.500

0.0884

3.750

0.0743

4.000

0.0625

SAMPLE

TOTAL

SA

TYPE, NUMBER

LENGTH

CS

14

. M

IN THIS SAMPLE.

-_E£

&£EU

I0.6601

1.2541

1.3201

1.4851

2.0132

3.0363

8.6799

13.3663

19.5710

19.6700

** MODE **

14.5875

8.8119

3.1353

0.8911

0.5281

0.3630

0.1980

0.1650

0.1320

0.1320

E SAMPLE

CENTER

LENGTH

METHODS

CM

. CM

1

0)

Page 30: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

3 n n r L C

I U I

A L

i A M r L t

SAMPLE

CRUISE

STATION

TYPE/NUMBER

LENGTH

CENTER

LENGTH

METHODS

S276WG

S-U

S 14

M .CM

CM

1

% FREQUENCY VS. SIZE

46

45 44 43 42

41 40

39

38

37

36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20

**19 18 17 16 15

*

14 13

*12 11 109

* *

8 7 6 5 4 3 *

*2

*1

******

o *****

-1

-8-7-6-5-4-3-2-1

0 1

2 3

4 5

6 7

8 9

10

11

12

13

14 PHI

256

64

16

4 1

.25

.0625

.0156

.0039

.00098

.00024

.00006

MM

MID-POINT

Page 31: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SEA276WG

SAMPLE

TOTAL

SAMPLE

SAMPLE

CRUISE

STATION

TYPE/NUMBER

LENGTH

CENTER

LENGTH

METHODS

S276W6

S-14

S U

M .CM

CM

1

X 100

98

96

94

92

90

88

86

84

82

80

78

76

74

72

70

68

66

64

62

60

58

56

54

52

50

48

46

44

42

40

38

36

34

32

30

28

26

24

22

20

18

16

14

12

10 8 6 4 2 0

CO

-8-7-6-5-4-3-2-1

0 1

2 3

4 5

6 7

8 9

10

11

12

13

14 PHI

256

64

16

4 1

.25

.0625

.0156

.0039

.00098

.00024

.00006

MM

Page 32: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SEA?

6UIG

SAMPLE

TOTAL

SAMPLE

SAMPLE

CRUISE

STATION

TYPE/NUMBER

LENGTH

CENTER

LENGTH

METHODS

S276UIG

S-15

S15S1

. M

.CM

. CM

1

#F:SV=20,ST= OsHsQ;uT:SV*29.6200sST= 0.0000*H/P* 0.0000; PHI LIM:CS* O.OOrFN* 0.00

SAMPLE ANALYZED BY THE FOLLOWING METHOD(S):

___SliE-BANfiE

HEiaQfi ...__

2.0000-

0.0625MM

SIEVES

UNEDITED SAMPLE WEIGHTS IN GRAMS:

.SiE

MES.

. _-BSA___

HlfifiQEUQIQMEIE

B.

..EAW-

-IQIAL

29.6200

29.6

200

(G)

PARTICLE SIZE DISTRIBUTION:

.Etii__

0.7

500

0.5000

0.2500

0.0000

0.2500

0.5000

0.7500

1.0000

1.2500

1.5000

1.7500

2.0000

2.2500

2.5000

2.7500

3.0000

3.2500

3.5000

3.7500

4.0000

SIZE CLASS RATIOS:

GRAVEL*

O.OOOPCT

SAND

* 100.000PCT

SILT

= O.OOOPCT

CLAY

= O.OOOPCT

MUD

» O.OOOPCT

__M.

M. _

1.68

181.

4142

1.18

921.

0000

0.8409

0.70

710.

5946

0.5000

0.42

040.3536

0.2973

0.25

000.

2102

0.17

680.1486

0.12

500.

1051

0.08

840.0743

0.0625

PERCENT.

0.203

0.709

1.013

1.519

2.161

3.106

7.056

4.288

9.554

14.686

13.234

13.741

11.479

4.186

5.469

2.127

2.296

1.283

1.013

0.878

CUM

EEat

EN.1

0.203

0.912

1.924

3.444

5.604

8.710

15.766

20.054

29.608

44.294

57.529

71.269

82.748

86.935

92.404

94.531

96.826

98.109

99.122

100.000

GRAVEL/SAND^

0.000

SAND/SILT

"99999.999

0.000

< 0.000

<99999.999

SILT/CLAY

SAND/CLAY

SAND/MUD

GRAVEL/MUD

0.000

ro

CD

Page 33: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SEA276WG

CRUISE

S276UG

SAMPLE

TOTAL

SAMPLE

SAMPLE

STATION

TYPE,NUMBER

LENGTH

CENTER

LENGTH

METHODS

S-15

S15S1

. M

.CM

. CM

1

INTERPOLATED SIZES USED IN GRAPHICAL STATISTICS

PHI MM

QS.Q

Q0.189

0.8769

1Q»Q

Q0.555

0.6808

0.764

0.5890

1.160

0.4475

1.607

0.3283

2.0

44

0.2

42

52

.32

30

.19

99

20.Q

Q2.6

11

0.1

63

7

2S.Q

Q3.0

42

0.1

21

4P

HI

MM

GRAPHICAL STATISTICS:

MEDIAN*

1.6069

MEDIAN*

1.6069

MEAN

* 1.5645

MEAN

* 1.5434

SORTING=

0.8220

SORTING*

0.7796

SKEWNESS* -0.0377 SKEW 16/84* -0.0815

SKEW

05/95*

0.0111

KURTOSIS*

1.3223

KURTOSIS*

0.8292

KURTOSIS*

0.1982

MEDIAN*

0.3283

MEAN

* 0.3450

SORTING*

1.3585

SKEWNESS*

1.0066

CLASS MID-POINTS(PHI) USED IN TH

E MOMENT CALCULATIONS:

-0.88

-0.63

-0.38

-0.13

0.13

0.38

0.63

2.88

3.13

3.

38

3.63

3.88

MOMENT MEASURES:

FIRST (ABOUT ORIGIN)*

SECOND (ABOUT MEAN) *

SECOND (ABOUT MEAN)

*

0.88

1.13

1.38

1.63

1.88

2.13

2.38

2.63

1.6000

0.6845 VARIANCE

0.8274 STANDARD DEVIATION

THIRD (ABOUT MEAN)

* -0.0021

FOURTH (ABOUT MEAN)

* 0.1963..

.5JJ3...

0.3299

U)

O

Page 34: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SEA276WG

CRUISE

STATION

S276WG

S-15

MODAL ANALYSIS

5 MODE(S) DETECTED

EU

1-.

-__au

-0.750

1.6818

-0.500

1.4142

-0.250

1.1892

0.000

1.0000

0.250

0.8409

0.500

0.7071

0.750

0.5946

1.000

0.5000

1.250

0.4204

1.500

0.3536

1.750

0.2973

2.000

0.2500

2.250

0.2102

2.500

0.1768

2.750

0.1486

3.000

0.1250

3.250

0.1051

3.500

0.0884

3.750

0.0743

4.000

0.0625

SAMPLE

TOTAL

TYPE/NUMBER

LENGTH

S15S1

. M

IN THIS SAMPLE.

--E£B££BI

0.2026

0,7090

1.0128

1.5192

2.1607

3.1060

7.0560

** MODE

4.2876

9.5544

14.6860

** MODE

13.2343

13.7407

** MODE

11.4787

4.1864

5.4693

** MODE

2.1269

2.2957

** MODE

1.2829

1.0128

0.8778

SAC

** ** ** ** **

E SAMPLE

CENTER

LENGTH

METHODS

CM

CM

1

U)

Page 35: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SEA276WG

SAMPLE

TOTAL

SAMPLE

SAMPLE

CRUISE

STATION

TYPE,NUMBER

LENGTH

CENTER

LENGTH

METHODS

S276WG

S-15

S15S1

. M

.CM

. CM

1

X FREQUENCY VS. SIZE

46

4544

43 42 41 40 39

383736 35 34 33 32 31 30

29 28 2726 25 24 23 22 21 20 19 1817

16 15

14 13 12 11 10 9 8 7 6 5 i 0 -1

-8

-7

-6

-5

-4

-3

-2

-1

0

1**'2***'***'*"

5*' 6

' ?

g""*9

io""l1* i2**13

14 PHI

256

64

16

4 1

.25

.0625

.0156

.0039

.00098

.00024

.00006

MM

MID-POINT

Page 36: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SEA276WG

SAMPLE

TOTAL

SAMPLE

SAMPLE

CRUISE

STATION

TYPE,NUMBER

LENGTH

CENTER

LENGTH

METHODS

S276WG

S-15

S15S1

. M

.CM

. CM

1

100 98 96 94 92 90 88 86 84 82 80 78 76 74 72 70 68 66 64 62 60 58 56 54 52 50 48 46 44 42 40 38 36 34 32 30 28 26 24 22 20 18 16 14 12 108 6 4 2 0

U)

U)

-8-7-6-5-4-3-2-1

0 1

2 3

4 5

6 7

8 9

10

11

12

13

14 PHI

256

64

16

4 1

.25

.0625

.0156

.0039

.00098

.00024

.00006

MM

Page 37: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SEA276WG

CRUISE

S276WG

SAMPLE

TOTAL

SAMPLE

SAMPLE

STATION

TYPE,NUMBER

LENGTH

CENTER

LENGTH

METHODS

S-28

S28S1

. M

.CM

. CM

1

*F:SV*20/ST* 0,H=0;WT:SVs26.1000/ST= 0.0000/H/Pa 0.0000; PHI LIM:CS« 0.00/FN* 0.00

SAMPLE ANALYZED BY THE FOLLOWING METHOD(S):

2.0000-

0.0625MM

SIEVES

UNEDITED SAMPLE WEIGHTS IN GRAMS:

.S1E

Y.E

S..

_.B

SA

__

Hif

caQ

EtiQ

IQM

EIU

- 26.1

00

0

PARTICLE SIZE DISTRIBUTION:

CUM

0.7

50

0 0

.50

00

0

.25

00

0

.00

00

0

.25

00

0.5

000

0.7

50

0

1.0

00

0

1.2

50

0

1.5

00

0,7

500

,0000

2500

5000

,7500

,0000

,250

0,5

000

,750

04.0000

SIZE CLASS RATIOS:

GRAVEL*

O.OOOPCT

SAND

SILT

CLAY

MUD

.-M

M-.

1

.68

18

1.4

14

21

.18

92

1.0

000

0.8

40

90

.70

71

0.5

94

60

.50

00

0.4

204

0.3

536

0.2

973

0.2

50

00.2

102

0.1

76

80

.14

86

0.1

25

00.1

051

0.0

884

0.0

743

0.0

62

5

0.1

15

0.2

68

0.3

83

0.4

21

0.5

75

0.5

75

1.4

18

2.9

89

6.6

67

21

.11

12

2.7

59

18

.96

612.7

59

4.0

23

4.7

13

1.1

11

0.6

13

0.2

68

0.1

53

0.1

15

0.1

15

0.3

83

0.7

66

1.1

88

1.7

62

2.3

37

3.7

55

6.7

43

13.4

10

34.5

21

57

.28

076.2

45

89

.00

493.0

27

97

.73

998.8

51

99

.46

499.7

32

99

.88

5100.0

00

26.1000 (G

)

100.000PCT

O.OOOPCT

O.OOOPCT

O.OOOPCT

SAND/SILT

SILT/CLAY

SAND/CLAY

SAND/MUD

GRAVEL/MUD

GRAVEL/SAND*

0.000

"99999.999

« 0.000

= 0.000

=99999.999

» 0.000

Page 38: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SEA276UG

CRUISE

S276WG

SAMPLE

TOTAL

SAMPLE

SAMPLE

STATION

TYPE,NUMBER

LENGTH

CENTER

LENGTH

METHODS

S-28

S28S1

. M

.CM

. CM

1

INTERPOLATED SIZES USED IN GRAPHICAL STATISTICS:

£UM_EEaC£.N.I

05*0

0 10

*00

16*00

25*00

PHI

0.882

1.154

1.303

1.439

MM

0.5425

0.4494

0.4052

0.3687

GRAPHICAL STATISTICS:

MEDIAN'

MEAN

=SORTING*

SKEUNESS*

KURTOSIS*

-lUH.AAI.if. till

1.6682

MEDIAN^

1.6901

MEAN

» 0.4482

SORTING*

0.0637 SKEW 16/84-

SKEW 05/95=

1.2454

KURTOSIS-

SO.0

01.668

0.3147

25*00

1.981

0.2534

£4.00

2.099

0.2334

2.310

0.2017

2.52

80.

1734

PHI

MM

1.6682

1.7011

0.3978

0.0827

0.0924

1.0684

MEDIANS

MEAN

»SORTING*

SKEUNESSs

KURTOSISs

0.3147

0.3110

1.2064

0.9436

0.2329

CLASS MID-POINTS (PHI) USED IN THE MOMENT CALCULATIONS:

-0.88

-0.63

-0.3

8 -0.13

0.13

0.38

0.63

0.88

2.88

3.

13

3.38

3.63

3.88

1.13

1.38

1.63

1.88

2.13

2.38

2.63

MOMENT MEASURES:

FIRST (ABOUT ORIGIN)*

SECOND (ABOUT MEAN) =

SECOND (ABOUT MEAN)

=

Etii__

1.6845

0.2930 VARIANCE

0.5413 STANDARD DEVIATION

THIRD (ABOUT MEAN)

= -0.1833

FOURTH (ABOUT MEAN)

= 1.4095

..MB__

0.31

11

U) 01

Page 39: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SEA276WG

SAMPLE

TOTAL

SA

CRUISE

STATION

TYPE^NUMBER

LENGTH

CS276WG

S-28

S28S1

. M

MODAL ANALYSIS

2 MODE(S)

-0.750

-0.500

-0.250

0.000

0.250

0.500

0.750

1.000

1.250

1.500

1.75

02.000

2.250

2.500

2.750

3.000

3.250

3.500

3.750

4.000

DETECTED

1.6818

1.4142

1.1892

1.0000

0.8409

0.7071

0.5946

0.5000

0.4204

0.3536

0.2973

0.2500

0.2102

0.1768

0.1486

0.1250

0.1051

0.0884

0.0743

0.0625

IN THIS SAMPLE.

0.1149

0.2682

0.3831

0.4215

0.5747

0.5747

1.4176

2.9885

6.6667

21.1111

22.7586

** MODE **

18.9655

12.7586

4.0230

4.7126

** MODE **

1.1111

0.6130

0.2682

0.1533

0.1149

E SAMPLE

CENTER

LENGTH

METHODS

CM

. CM

1

U)

O)

Page 40: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SEA276UG

SAMPLE

TOTAL

SAMPLE

SAMPLE

CRUISE

STATION

TYPE,NUMBER

LENGTH

CENTER

LENGTH

METHODS

S276WG

S-28

S28S1

. M

.CM

. CM

1

X FREQUENCY VS. SIZE

4645

44 43 42 41 40

39 38 37 3635 34 33

32

31 30 29 28 27 26 25 24 23

*22 21

*20 19

*18 17 16 15 14 13

*12 11 10 9 8 7

*6 5

*4

*3

*2 1

***

**

0 ****

* * *

-1:...:...:...:...:...:...:...:...:...:...:...:...:...:...:...:...:...:...:...:...:...:...:...:

-8-7-6-5-4-3-2-1

0 1

2 3

4 5

6 7

8 9

10

11

12

13

14 PHI

256

64

16

4 1

.25

.0625

.0156

.0039

.00098

.00024

.00006

MM

MID-POINT

Page 41: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SEA276WG

SAMPLE

TOTAL

SAMPLE

SAMPLE

CRUISE

STATION

TYPE,NUMBER

LENGTH

CENTER

LENGTH

METHODS

S276WG

S-28

S28S1

. M

.CM

. CM

1

1009896

9492

908886848280 78

76 74 72 70 68

66646260 58

56

54 52 50

4846

44 42 40 38 36

34 32 30

28

26 2422

20 18 16 14 12

10 8 6 4 2 0

-8-7-6-5-4-3-2-1

0 1

2 3

4 5

6 7

8 9

10

11

12

13

14 PHI

256

64

16

4 1

.25

.0625

.0156

.0039

.00098

.00024

.00006

MM

OJ 00

Page 42: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SEA276WG

CRUISE

S276WG

STATION

S-29

SAMPLE

TYPE,NUMBER

S29S1

TOTAL

LENGTH

M

SA

MP

LE

S

AM

PL

E

CE

NT

ER

L

EN

GT

H

ME

TH

OD

S

.CM

C

M

1

>T

=

0.0

00

0,H

/Ps

SA

MP

LE

A

NA

LY

ZE

D

BY

T

HE

F

OL

LO

WIN

G

ME

TH

OD

(S):

....iiZ

£.f

iAtl

fi£-_

..M

EU

iQa________

2.0

000-

0.0

62

5M

M

SIE

VE

S

UN

ED

ITE

D

SA

MP

LE

W

EIG

HT

S

IN

GR

AM

S:

-Si£

y£$

.

---

27

.68

00

PARTICLE SIZE DISTRIBUTION:

.ea

i _-0

.7500

-0.5

000

-0.2

500

0.0

00

0

0.2

50

0

0.5

00

0

0.7

50

0

1.0

000

1.2

50

0

1.5

000

1.7

500

2.0

000

2.2

50

0

2.5

00

0

2.7

50

0

3.0

000

3.2

50

0

3.5

000

3.7

50

0

4.0

00

0

--M

B..

1

.68

18

1

.41

42

1

.18

92

1.0

000

0.8

40

9

0.7

07

1

0.5

94

6

0.5

000

0.4

204

0.3

536

0.2

97

3

0.2

50

0

0.2

102

0.1

76

8

0.1

48

6

0.1

25

0

0.

10

51

0

.08

84

0.0

743

0.0

625

pE

Bt£

N.l

0.0

72

0.0

72

0.0

72

0

.10

8

0.1

45

0.2

89

0.3

25

0.3

61

0

.54

2

1.5

90

8.8

87

1

9.6

89

2

1.1

34

15.2

82

24.6

75

4.4

08

1.5

90

0.4

34

0.1

81

0

.14

5

uun

ecB

uui

0.0

72

0

.14

5

0.2

17

0.3

25

0

.47

0

0.7

59

1

.08

4

1.4

45

1

.98

7

3.5

77

12.4

64

32.1

53

53

.28

8

68.5

69

93

.24

4

97

.65

2

99.2

41

99

.67

5

99

.85

510

0.00

0SIZE CLASS RATIOS:

GRAVEL:

SAND

SILT

CLAV

MUD

O.OOOPCT

100.000PCT

-O.OOOPCT

O.OOOPCT

-O.OOOPCT

CAM___

-IfllAL__

27.6800 (G

)

GRAVEL/SAND^

0.000

SAND/SILT

**********

SILT/CLAV

* 0.000

SAND/CLAY

* 0.000

SAND/MUD

U)

CO

GRAVEL/MUD =

0.0

00

Page 43: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SEA276WG

CRUISE

S276WG

SAMPLE

TOTAL

SAMPLE

SAMPLE

STATION

TYPE/NUMBER

LENGTH

CENTER

LENGTH

METHODS

S-29

S29S1

. M

.CM

. CM

1

INTERPOLATED SIZES USED IN

£Utt.££B££AII

05*00

PHI

1.608

MM

0.3280

GRAPHICAL STATISTICS:

GRAPHICAL

10.00

1.681

0.3119

STATISTICS:

16*00

1.811

0.2850

23

-00

1.9

34

0.2

61

6

20*0

02

.20

80

.21

64

Z5

.0Q

2.5

65

0.1

69

0

fi&.O

O2

.55

30

.17

04

20-0

02

.66

70

.15

75

Si.O

O2

.80

70

.14

29

PH

IM

M

MEDIAN"

2.2081

MEDIAN"

2.2081

MEAN

» 2.1907

MEAN

» 2.1821

SO

RT

ING

* 0.3

671

SO

RT

ING

* 0

.37

11

SKEWNESS* -0.0355 SKEW 16/84* -0.0701

SKEW 05/95* -0.0013

MEDIAN-

0.2164

MEAN

» 0.2153

SORTING"

1.2444

SKEWNESS"

0.9439

KURTOSIS

0.7786

KURTOSIS-

0.6146

KURTOSIS

0.3000

CLASS MID-POINTS(PHI) USED IN THE MOMENT CALCULATIONS;

-0.88

-0.63

-0.38

-0.13

0.13

0.38

0.63

0.88

2.88

3.13

3.38

3.63

3.88

1.13

1.38

1.63

1.88

2.13

2.38

2.63

MOMENT MEASURES:

FIRST (ABOUT ORIGIN)

SECOND (ABOUT MEAN)

SECOND (ABOUT MEAN)

..em_

2.2094

0.2

185

VA

RIA

NC

E0.4

674

ST

AN

DA

RD

D

EV

IAT

ION

T

HIR

D

(AB

OU

T

ME

AN

) «

-0.4

674

FO

UR

TH

(A

BO

UT

M

EA

N)

* 2.1

667

-M.M.__

0.2162

O

Page 44: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SEA276WG

SAMPLE

TOTAL

CRUISE

STATION

TYPE/NUMBER

LENGTH

S276WG

S

MODAL ANALYSI

-29

S2

MODE(S) DETECTED

-0.750

-0.500

-0.250

0.000

0.250

0.500

0.750

1.00

01.250

1.500

1.750

2.000

2.250

2.500

2.750

3.000

3.250

3.500

3.750

4.000

1 .6818

1.4142

1.1892

1.0000

0.8409

0.7071

0.5946

0.5000

0.4204

0.3536

0.2973

0.2500

0.2102

0.1768

0.1486

0.1250

0.1051

0.0884

0.0743

0.0625

S29S1

. M

IN THIS SAMPLE.

0.0723

0.0723

0.0723

0.1084

0.1445

0.2890

0.3251

0.3613

0.5419

1.5896

8.8873

19.6893

21.1344

** MO

D15.2818

24.6749

** MO

D4.4075

1.5896

0.4335

0.1806

0.1445

SAMPLE

SAMPLE

CENTER

LENGTH

METHODS

.CM

. CM

1

Page 45: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SEA276WG

SAMPLE

TOTAL

SAMPLE

SAMPLE

CRUISE

STATION

TYPE/NUMBER

LENGTH

CENTER

LENGTH

METHODS

S276WG

S-29

S29S1

. M

.CM

CM

1

X FREQUENCY VS. SIZE

46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28

27 26 25

*24 23 22 21

*

20

*19 18 17 16 15

*14 13 12 11 10 9

*8 7 6 5 4

*3 2

* *

-8-7-6-5-4-3-2-1

0 1

2 3

4 5

6 7

8 9

10

11

12

13

14 PHI

256

64

16

4 1

.25

.0625

.0156

.0039

.00098

.00024

.00006

MM

MID-POINT

Page 46: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SEA276WG

SAMPLE

TOTAL

SAMPLE

SAMPLE

CRUISE

STATION

TYPE/NUMBER

LENGTH

CENTER

LENGTH

METHODS

S276UG

S-29

S29S1

M .CM

CM

1

X 10098

96 94 92

90

88

86

848280

78

76

74 72 70

6866

64

6260 58

56

54

5250

4846

4442

40 38

36 34 3230

28

26

24 2220

18 16 14 1 2

10 8 6 4 2 0

-8-7-6-5-4-3-2-1

0 1

2 3

4 5

6 7

8 9

10

11

12

13

14 PHI

256

64

16

4 1

.25

.0625

.0156

.0039

.00098

.00024

.00006

MM

Page 47: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SEA276WG

SAMPLE

TOTAL

SAMPLE

SAMPLE

CRUISE

STATION

TYPE, NUMBER

LENGTH

CENTER

LENGTH

METHODS

S276UG

S-30

S30S1

. M

.CM

. CM

1

#F:SV=20,ST« 0,H=0;UT:SV=27.1600,ST= 0.0000,H/P* 0.0000; PH

I LIM:CS* 0.00,FN= 0.00

SAMPLE ANALYZED BY THE FOLLOWING METHOD(S):

___ SIU-BAN6E--

ME

Itif

lfl

2.0000-

0.0625MM

SIEVES

UNEDITED SAMPLE WEIGHTS IN GRAMS:

.SIEVES BSA ___

HY.&BQEUQIQMEIEB.

27.1550

PARTICLE SIZE DISTRIBUTION:

0.7500

0.5000

0.2500

0.0000

0.2500

0.5000

0.7500

1.0000

1.2500

1 .5000

1.7500

0000

2500

5000

7500

0000

2500

5000

7500

4.. 0000

SIZE CLASS RATIOS:

GRAVEL^

O.OOOPCT

SAND

SILT

CLAY

MUD

_ M.

M,__

T76818

1.4142

1.1892

1.0000

0.8409

0.7071

0.5946

0.5000

0.4204

0.3536

0.2973

0.2500

0.2102

0.1768

0.1486

0.1250

0.1051

0.0884

0.0743

0.0625

PEBt

ENI

0.184

0.147

0.11

00.184

0.368

0.552

1.639

4.345

10.974

24.415

19.959

17.750

13.036

3.535

2.136

0.368

0.221

0.037

0.018

0.018

CUM

EEBtENI

0.184

0.331

0.442

0.626

0.994

1.547

3.185

7.531

18.505

42.920

62.880

80.630

93.666

97.201

99.337

99.705

99.926

99.963

99.982

100.000

-IQIAL

27.1550 (G

)

100.000PCT

O.OOOPCT

O.OOOPCT

O.OOOPCT

SAND/SILT

SILT/CLAY

SAND/CLAY

SAND/MUD

GRAVEL/MUD

GRAVEL/SAND*

0.000

99999.999

0.000

0.000

99999.999

0.000

Page 48: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SEA276WG

CRUISE

S276WG

SAMPLE

TOTAL

SAMPLE

SAMPLE

STATION

TYPE,NUMBER

LENGTH

CENTER

LENGTH

METHODS

S-30

S30S1

. M

.CM

. CM

1

INTERPOLATED SIZES USED IN GRAPHICAL STATISTICS:

Q5.»UQ

1Q»QQ

16»QQ

PHI

0.896

1.084

1.221

MM

0.5373

0.4718

0.4291

1.334

0.3966

1.584

0.3335

1.914

0.2654

24.QQ

2.011

0.2481

SQ.Q

fl2.123

0.2295

2.328

0.1992

PHI

MM

GRAPHICAL STATISTICS:

£.QL6.-&.U4aP.-iEtlU

MEDIANS

1.5844

MEAN

= SORTING*

SKEWNESS*

.UMJ

AN.i

P.ii

U...

MEDIAN*

1.6055

MEAN

= 0.4146

SORTINGs

0.0591 SKEW 16/84=

SKEW 05/95=

1 .5844

1.6160

0.3953

0.0799

0.0695

MEDIAN*

MEAN

=SORTINGs

SKEWNESS=

0.3335

0.3310

1.2224

0.9468

KU

RT

OS

IS=

1.0

125

KURTOSIS

0.8111

KURTOSIS*

0.2708

CLASS MID-POINTSCPHI) USED IN THE MOMENT CALCULATIONS:

-0.88

-0.63

-0.38

-0.13

0.13

0.38

0.63

2.88

3.13

3.38

3.63

3.88

0.88

1.13

1.38

1.63

1.88

2.13

2.38

2.63

MOMENT MEASURES:

FIRST (ABOUT ORIGIN)*

SECOND (ABOUT MEAN)

= SECOND (ABOUT MEAN)

*

Edl__

__MB__

1.6011

0.3296

0.2273 VARIANCE

0.4768 STANDARD DEVIATION

THIRD (ABOUT MEAN)

= -0.2209

FOURTH (ABOUT MEAN) »

1.2283

CJ1

Page 49: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SEA276WG

CRUISE

S276WG

STATION

S-30

SAMPLE

TYPE/NUMBER

S30S1

TOTAL

LENGTH

. M

SAMPLE

CENTER

. CM

SAMPLE

LENGTH

. CM

METHODS

1

MODAL ANALYSIS

1 MODE(S) DETECTED IN THIS SAMPLE.

-0.750

-0.500

-0.250

0.000

0.250

0.500

0.750

1.000

1 .250

1.500

1 .750

2.000

2.250

2.500

2.750

3.000

3.250

3.500

3.750

4.000

1 .6818

1 .4142

1.1892

1 .0000

0.8409

0.7071

0.5946

0.5000

0.4204

0.3536

0.2973

0.2500

0.2102

0.1768

0.1486

0.1250

0.1051

0.0884

0.0743

0.0625

0.1841

0.1473

0.1105

0.1841

0.3683

0.5524

1.6387

4.3454

10.9740

24.4154

19.9595

17.7500

13.0363

3.5353

2.1359

0.3683

0.2210

0.0368

0.0184

0.0184

** MODE **

o

Page 50: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SEA276UG

SAMPLE

TOTAL

SAMPLE

SAMPLE

CRUISE

STATION

TYPE/NUMBER

LENGTH

CENTER

LENGTH

METHODS

S276WG

S-30

S30S1

. M

.CM

CM

1

X FREQUENCY VS. SIZE

46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26

25 24

*23

22 21 20

*19 18

*17 16 15 14 13

*12 11

*

109 8 7 6 5 4

* *

3 2 *

*1

*0

*****

*****

I...:...:...:...:...:...:...:...:...:...:...:...:...:...:...:...:...:...:...:...:...:...:...:

-8-7-6-5-4-3-2-1

0 1

2 3

4 5

6 7

8 9

10

11

12

13

14 PHI

256

64

16

4 1

.25

.0625

.0156

.0039

.00098

.00024

.00006

MM

MID-POINT

Page 51: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SEA276WG

SAMPLE

TOTAL

SAMPLE

SAMPLE

CRUISE

STATION

TYPE/NUMBER

LENGTH

CENTER

LENGTH

METHODS

S276WG

S-30

S30S1

M .CM

CM

1

X 100

98

96

94

92

90

88

86

84

82

80

78

76

74

72

70

68

66

64

62

60

58

56

54

52

50

48

46

44

42

40

38

36

34

32

30

28

26

24

22

20

18

16

14

12

10 8 6 4 2 0

..I...I...I...I...I...I...I...I...I...I...I...I...I...I...I...I...I... I... I... I...I...I... I

-8-7-6-5-4-3-2-1

0 1

2 3

4 5

6 7

8 9

10

11

12

13

14 PH

I 256

64

16

4 1

.25

.0625

.0156

.0039

.00098

.00024

.00006

MM

Page 52: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SEA276WG

CRUISE

S276UG

SAMPLE

TOTAL

SAMPLE

SAMPLE

STATION

TYPE'NUMBER

LENGTH

CENTER

LENGTH

METHODS

S-30

S30S2

. M

.CM

CM

1

#F:SV=20sSTc 0*H«0;WT:SV=29.0800,ST= 0.0000*H/P« 0.0000; PHI LIM:CS« 0.00*FN« 0.00

SAMPLE ANALYZED BY THE FOLLOWING METHOD(S):

2.0000-

0.0625MM

SIEVES

UNEDITED SAMPLE WEIGHTS IN GRAMS:

.SIEVES

BSA__

HY.P.BQEUQIQM.EIEB-

29.0

800

PARTICLE SIZE DISTRIBUTION:

.Etll

__

0.7

500

0.5

000

0.2

500

0.0

000

0.2

50

00

.50

00

0.7

50

01

.0000

1.2

50

01

.50

00

1.7

50

02.0

000

2.2

500

2.5

00

02

.75

00

3.0

000

3.2

50

03

.50

00

3.7

50

04

.00

00

M

B

1.6

818

1.4

142

1.1

89

21

.00

00

0.8

409

0.7

071

0.5

94

60.5

000

0.4

204

0.3

536

0.2

973

0.2

50

00

.21

02

0.1

76

80

.14

86

0.1

250

0.1

05

10

.08

84

0.0

74

30

.06

25

§tiI

6.6

53

1.2

38

1.2

72

1.3

76

1.7

54

2.2

01

5.9

49

10.6

60

14

.27

12

0.7

70

13.9

27

13.6

86

9.0

78

1.8

57

1.0

66

0.1

03

0.0

69

0.0

34

0.0

17

0.0

17

CU

M

EE

EIE

B!

0.6

53

1.8

91

3.1

64

4.5

39

6.2

93

8.4

94

1 4

.44

32

5.1

03

39

.37

46

0.1

44

74.0

72

87.7

58

96

.83

698.6

93

99

.75

99

9.8

62

99

.93

19

9.9

66

99

.98

31

00

.00

0

SIZE CLASS RATIOS:

GRAVEL"

O.OOOPCT

SAND

SILT

CLAY

MUD

.IfiJAL.__

29.0800 (G

)

100.000PCT

O.OOOPCT

O.OOOPCT

O.OOOPCT

SAND/SILT

SILT/CLAY

SAND/CLAY

SAND/MUD

GRAVEL/MUD

GRAVEL/SAND*

0.000

99999.999

= 0.000

* 0.000

=99999.999

« 0.000

CD

Page 53: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SEA276WG

CRUISE

S276WG

SAMPLE

TOTAL

SAMPLE

SAMPLE

STATION

TYPE,NUMBER

LENGTH

CENTER

LENGTH

METHODS

S-30

S30S2

. M

.CM

. CM

1

INTERPOLATED SIZES USED IN

CUM.

EfBt

ENI

05*00

PHI

0.072

MM

0.9516

GRAPHICAL STATISTICS:

GRAPHICAL

1Q»QQ

0.596

0.6614

STATISTICS:

16*00

0.796

0.5759

25*00

0.998

0.5006

50*00

1.377

0.3850

Z5*00

1.764

0.2943

MEDIAN*

1.3771

MEDIAN*

1.3771

MEDIAN*

0.3850

MEAN

= 1.3656

MEAN

* 1.3598

MEAN

* 0.3975

SORTING*

0.5940

SORTING*

0.5637

SORTING*

1.3041

SKEWNESS* -0.1491 SKEW 16/84* -0.0307

SKEUNESS*

0.9941

SKEW 05/95* -0.4888

KURTOSIS*

1.1019

KURTOSISs

0.8272

KURTOSIS*

0.2444

CLASS MID-POINTS(PHI) USED IN THE MOMENT CALCULATIONS:

-0.88

-0.63

-0.38

-0.13

0.13

0.38

0.63

2.88

3.13

3.38

3.63

3.88

84*00

1 .924

0.2636

2.062

0.2395

22*00

2.132

0.2282

PHI

MM

0.88

1.13

1.38

1.63

1.88

2.13

2.38

2.63

MOMENT MEASURES:

FIRST (ABOUT ORIGIN)*

SECOND (ABOUT MEAN)

= SECOND (ABOUT MEAN)

*

Eb.

1..-

__BM__

1.3226

0.3998

0.4052 VARIANCE

0.6365 STANDARD DEVIATION

THIRD (ABOUT MEAN)

* -0.4064

FOURTH (ABOUT MEAN)

* 0.6487

(Jl O

Page 54: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SEA276WG

CRUISE

STATION

S276WG

S-30

MODAL ANALYSIS

1 MODE(S) DETECTED

EB1 __ MM._

-0.750

1.6818

-0.500

1.4142

-0.250

1.1892

0.000

1.0000

0.250

0.8409

0.500

0.7071

0.750

0.5946

1.000

0.5000

1.250

0.4204

1.500

0.3536

1.750

0.2973

2.000

0.2500

2.250

0.2102

2.500

0.1768

2.750

O.U86

3.000

0.1250

3.250

0.1051

3.500

0.0884

3.750

0.0743

4.000

0.0625

SAMPLE

TOTAL

SATYPE/NUMBER

LENGTH

CS30S2

. M

IN THIS SAMPLE.

EE

at£M

i0.6534

1.2380

1.2724

1.3755

1.7538

2.2008

5.9491

10.6602

14.2710

20.7703

** MODE **

13.9271

13.6864

9.0784

1.8569

1.0660

0.1032

0.0688

0.0344

0.0172

0.0172

E SAMPLE

CENTER

LENGTH

METHODS

CM

CM

1

Page 55: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SEA276WG

SAMPLE

TOTAL

SAMPLE

SAMPLE

CRUISE

STATION

TYPE/NUMBER

LENGTH

CENTER

LENGTH

METHODS

S276WG

S-30

S30S2

. M

.CM

. CM

1

X FREQUENCY VS. SIZE

46

45

44 43 42 41 40

3938 37 36 35 34 33

32 31 30 29 28 27 26 25 24 23 22 21

*20 19 18 17 16 15 14

* **

13 12 11

*109

*8 7 6

* /j|

^

3 2 1 0 *****

-1

-8

-7

-6 -5-4-3-2-1

0 1

2 3

*4

* 5

*6*

7*"* 8*""9*"10 *"i

1 *"

12**

13

14 PH

I 256

64

16

4 1

.25

.0625

.0156

.0039

.00098

.00024

.00006

MMMID-POINT

Page 56: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SEA276WG

SAMPLE

TOTAL

SAMPLE

SAMPLE

CRUISE

STATION

TYPExNUMBER

LENGTH

CENTER

LENGTH

METHODS

S276WG

S-30

S30S2

. M

.CM

. CM

1

100

98

96

94

92

90

88

86

84

82

80

78

76

74

72

70

68

66

64

62

60

58

56

54

52

SO

48

46

44

42

40

38

36

34

32

30

28

26

24

22

20

18

16

14

12

10 8 6 4 2 0

O1 OJ

-8-7-6-5-4-3-2-1

0 1

2 3

4 5

6 7

8 9

10

11

12

13

14 PHI

?56

64

16

4 1

.25

.0625

.0156

.0039

.00098

.00024

.00006

MM

Page 57: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SEA276WG

CRUISE

S276WG

SAMPLE

TOTAL

SAMPLE

SAMPLE

STATION

TYPE, NUMBER

LENGTH

CENTER

LENGTH

METHODS

S-31

S31S1

M .CM

CM

1

«F:SV=20,ST* 0,H=0;WT :

S V»30. 0000 / ST *

0.0000/H/P» 0.0000; PHI LIM:CS* 0.00/FN« 0.00

SAMPLE ANALYZED BY TH

E FOLLOWING METHOD(S):

2.0000-

0.0625MM

SIEVES

UNEDITED SAMPLE WEIGHTS IN

GRAMS:

-SIEVES BS6.__

Hip.

fifi

eH.Q

IQM.

EIEB

. 30

.000

0

PARTICLE SIZE DISTRIBUTION:

.Ett

l__

0.7

50

0 0

.5000

0.2

50

0

0.0

00

0

0.2

500

0.5

000

0.7

50

0

1.0

00

0

1.2

500

1.5

000

1.7

50

0

2.0

00

0

2.2

50

0

2.5

000

2.7

50

0

3.0

000

3.2

500

3.5

000

3.7

50

0

4.0

00

0

SIZE CLASS RATIOS:

GRAVEL"

O.OOOPCT

SAND

SILT

CLAY

MUD

CUM

1.6

81

81

.41

42

1.1

892

1.0

000

0.8

409

0.7

071

0.5

946

0.5

00

00.4

204

0.3

53

60

.29

73

0.2

50

00

.21

02

0.1

76

80

.14

86

0.1

25

00

.10

51

0.0

88

40

.07

43

0.0

62

5

0.0

00

0.0

00

0.0

67

0.0

33

0.0

33

0.1

00

0.2

33

0.4

00

1.0

33

13.7

67

25

.50

02

8.7

00

18.8

67

4.7

00

3.5

33

1.4

00

0.9

67

0.6

33

0.0

17

0.0

17

0.0

00

0.0

00

0.0

67

0.1

00

0.1

33

0.2

33

0.4

67

0.8

67

1.9

00

1 5

.66

741.1

67

69.8

67

88

.73

39

3.4

33

96.9

67

98

.36

79

9.3

33

99

.96

799.9

83

10

0.0

00

30.0000 (G

)

100.000PCT

O.OOOPCT

O.OOOPCT

O.OOOPCT

SAND/SILT

SILT/CLAY

SAND/CLAY

SAND/MUD

GRAVEL/MUD

GRAVEL/SAND*

0.000

"99999.999

» 0.000

0.000

=99999.999

* 0.000

Page 58: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SEA276WG

CKUISE

S276WG

STATION

S-31

SAMPLE

TYPE,NUMBER

S31S1

TOTAL

LENGTH M

SAMPLE

CENTER

. CM

SAMPLE

LENGTH

. CM

METHODS

1

INTERPOLATED SIZES USED IN GRAPHICAL STATISTICS:

LUM_

EfBL

£UI

Q5»QQ

1Q»Q

Q 16*00

ZS+Q

Q 5f

l*QQ

Z5

»QQ

a^QQ

2Q»QO

25*0

0 £UJJ.££fi££AII

PHI

1.306

1.397

1.504

1.609

1.820

2.005

2.127

2.309

2.574

PHI

MM

0.4044

0.3797

0.3525

0.3278

0.2832

0.2491

0.2289

0.2018

0.1679

MM

GRAPHICAL STATISTICS:

MEDIAN*

1.8203

MEDIAN*

1.8203

MEAN

* 1.8173

MEAN

« 1.8158

SORTING*

0.3478

SORTING*

0.3116

SKEWNESS*

0.0872 SKEW 16/84* -0.0145

SKEW 05/95*

0.3844

KURTOSIS*

1.3124

KURTOSIS*

1.0342

MEDIAN^

MEAN

=SORTING*

SKEUNESS-

0.2832

0.2885

1.1470

1.0187

KURTOSIS*

0.2211

CLASS MID-POINTS(PHI) USED IN THE MOMENT CALCULATIONS:

-0.88

-0.63

-0.38

-0.13

0.13

0.38

0.63

0.88

2.88

3.13

3.38

3.63

3.88

1.13

1.38

1.63

1.88

2.13

2.38

2.63

MOMENT MEASURES:

FIRST (ABOUT ORIGIN)

SECOND (ABOUT MEAN)

SECOND (ABOUT MEAN)

£0.1__

__MM__

1.8569

0.2761

0.1594 VARIANCE

0.3993 STANDARD DEVIATION

THIRD (ABOUT MEAN)

- 0.3092

FOURTH (ABOUT MEAN)

* 1.3424

CJ1

CJ1

Page 59: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SEA276WG

SAMPLE

TOTAL

SACRUISE

STATION

TYPE/NUMBER

LENGTH

CS276UG

S-31

S31S1

. M

MODAL ANALYSIS

2 HODE(S)

EB1-.

-0.750

-0.500

-0.250

0.000

0.250

0.500

0.750

1.00

01.

250

1.500

1.75

02.000

2.250

2.500

2.750

3.000

3.25

03.500

3.750

4.000

DETECTED

M.M.

1.6818

1.4142

1.1892

1.0000

0.8409

0.7071

0.5946

0.5000

0.4204

0.3536

0.2973

0.2500

0.2102

0.1768

0.1486

0.1250

0.1051

0.0884

0.0743

0.0625

IN THIS SAMPLE.

EERttNI

0.0000

0.0000

0.0667

** MODE **

0.0333

0.0333

0.1000

0.2333

0.4000

1.0333

13.7667

25.5000

28.7000

** MODE **

18.8667

4.7000

3.5333

1.4000

0.9667

0.6333

0.0167

0.0167

E SAMPLE

CENTER

LENGTH

METHODS

CM

CM

1

Ol O)

Page 60: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SEA276WG

SAMPLE

TOTAL

SAMPLE

SAMPLE

CRUISE

STATION

TYPE,NUMBER

LENGTH

CENTER

LENGTH

METHODS

S276WG

S-31

S31S1

M .CM

CM

1

X FREQUENCY VS. SIZE

46

4544 43 43

41 40 39 38

3736 35 34 33 32 31 30 29

*28 27 26 25

*

24 23 22 21 20 19

*18 17 16 15 14

*13 12 11 109 8 7 6 5

*3

*

2 1 *

***

0 ********

**

-1

-8-7-6-5-4-3-2-1

0 1

2 3

4 5

6 7

8 9

10

11

12

13

14 PHI

256

64

16

4 1

.25

.0625

.0156

.0039

.00098

.00024

.00006

MMMID-POINT

Page 61: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SEA276WG

SAMPLE

TOTAL

SAMPLE

SAMPLE

CRUISE

STATION

TYPE/NUMBER

LENGTH

CENTER

LENGTH

METHODS

S276UG

S-31

S31S1

. M

.CM

CM

1

X 100 98

96

94 92 90

888684 82 80 78 76 74 72 70 68

66

64

6260

58 56

54

52 50

48

46

44

42403836 34 32 30 2826

24 22 20 18

16 12 108 6 2 0

cn CD

I... I... I... I... I...I...I...I...|...|...|...|...|...|...| ...|... |... |... |... |..

. |.

.. |...

| 8-7-6-5-4-3-2-1

0 1

2 3

4 5

6 7

8 9

10

11

12

13

14 PHI

Page 62: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SEA276WG

CRUISE

S276UG

SAMPLE

TOTAL

SAMPLE

SAMPLE

STATION

TYPE,NUMBER

LENGTH

CENTER

LENGTH

METHODS

S-34

S34S1

. M

.CM

. CM

1

#F:SV=20,ST= 0,H*0;wT:SV=29.0500,ST= 0.0000/H/P* 0.0000; PH

I LIM:CS« 0.00/FN* 0.00

SAMPLE ANALYZED BY THE FOLLOWING METHOD(S):

___51i£.BAH&£

..MEIdQfi.______

2.0000-

0.0625MM

SIEVES

UNEDITED SAMPLE WEIGHTS IN GRAMS:

29.0500

PARTICLE SIZE DISTRIBUTION:

0.7

50

0 0

.50

00

0.2

50

0

0.0

00

0

0.2

50

0

0.5

00

0

0.7

500

1.0

00

0

1.2

500

1 .5

000

1 .7

500

0000

2500

5000

7500

0000

2500

5000

7500

4.0

00

0

SI ZE

CLASS RAT IOS:

GRAVEL*

O.OOOPCT

SAND

« 100.000PCT

SILT

s O.OOOPCT

CLAY

- O.OOOPCT

MUD

= O.OOOPCT

..M

M..

1.6

81

81

.41

42

1.1

89

21

.00

00

0.8

40

90

.70

71

0.5

946

0.5

00

00.4

204

0.3

53

60

.29

73

0.2

50

00.2

102

0.1

76

80

.14

86

0.1

25

00

.10

51

0.0

884

0.0

743

0.0

625

?£&

££(*

!0.0

00

0.0

00

0.0

00

0.0

34

0.0

34

0.0

34

0.0

34

0.0

69

0.1

72

0.4

82

1.1

70

5.9

21

32

.32

41

6.3

51

28

.02

16.7

81

3.8

90

2.5

82

1.4

46

0.6

54

CU

ME

£B

££N

.I0

.00

00

.00

00.0

00

0.0

34

0.0

69

0.1

03

0.1

38

0.2

07

0.3

79

0.8

61

2.0

31

7.9

52

40.2

75

56

.62

784.6

47

91

.42

99

5.3

18

97

.90

099.3

46

10

0.0

00

.IQIAL__

29.0500 <G

)

GR

AV

EL

/SA

ND

s

0.0

00

SA

ND

/SIL

T

=9

99

99

.99

9

= 0

.00

0

= 0

.00

0

=99999

.99

9

SIL

T/C

LA

Y

SA

ND

/CLA

Y

SA

ND

/MU

D

GR

AV

EL

/MU

D

(Jl

CO

0.000

Page 63: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SE

A276W

G

CR

UIS

E

S276W

G

SA

MP

LE

T

OT

AL

S

AM

PLE

S

AM

PLE

ST

AT

ION

T

YP

E,N

UM

BE

R

LE

NG

TH

C

EN

TE

R

LE

NG

TH

M

ET

HO

DS

S-3

4

S3

4S

1

M .C

M

CM

1

INT

ER

PO

LA

TE

D

SIZ

ES

U

SE

D

IN

GR

AP

HIC

AL

S

TA

TIS

TIC

S:

PH

I M

M1

.98

50

.25

26

2.0

39

0.2

433

2.1

35

0.2

276

2.2

29

0.2

133

2.3

98

0.1

89

72

.60

50.1

643

2.7

38

O

.U99

20*0

02

.93

40

.13

08

3.2

25

0.1

06

9PH

I MM

GR

AP

HIC

AL

ST

AT

IST

ICS

MEDIANS

MEAN

=SORTING*

SKEWNESS*

2. 2. 0. 0.

3983

4240

3387

2306

MEDIAN

MEAN

SORTING

SKEW 16/84

SKEW 05/95

s s e X =

2 2 0 0 0

m , , .

3983

4368

3016

1276

6860

MEDIANS

MEAN

sSORTINGS

SKEWNESS=

0 0 1 0

* 9 ^

1897

1888

1393

9740

KURTOSIS=

1.3501

KURTOSISs

1.0557

KURTOSIS«

0.2177

CL

AS

S

MID

-PO

INT

S(P

HI)

U

SE

D

IN

TH

E

MO

ME

NT

C

ALC

ULA

TIO

NS

:-0

.88

-D.6

3

-0.3

8

-0.1

3

0.1

3

0.3

8

0.6

32.8

8

3.1

3

3.3

8

3.6

3

3.8

80.88

1.13

1.38

1.63

1.88

2.13

2.38

2.63

MOMENT MEASURES:

FIRST (ABOUT ORIGIN)s

SECOND (ABOUT MEAN)

" SECOND (ABOUT MEAN)

=

_.£bi__

__MM.__

2.4317

0.1853

0.1732 VARIANCE

0.4162 STANDARD DEVIATION

THIRD (ABOUT MEAN)

« 0.2354

FOURTH (ABOUT MEAN)

« 1.0493

0)

O

Page 64: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SEA276WG

SAMPLE

TOTAL

CRUISE

STATION

TYPE/NUMBER

LENGTH

S376UG

S-34

S34S1

. M

MODAL ANALYSIS

2 MODE(S)

-0.750

-0.500

-0.250

0.000

0.250

0.500

0.750

1.000

1.250

1.500

1.750

2.000

2.250

2.500

2.750

3.000

3.250

3.500

3.750

4.000

DETECTED

1 .6818

1.4142

1.1892

1 .0000

0.8409

0.7071

0.5946

0.5000

0.4204

0.3536

0.2973

0.2500

0.2102

0.1768

0.1486

0.1250

0.1051

0.0884

0.0743

0.0625

IN THIS SAMPLE.

0.0000

0.0000

0.0000

0.0344

0.0344

0.0344

0.0344

0.0688

0.1721

0.4819

1.1704

5.9208

32.3236

** MOD

16.3511

28.0207

** MOD

6.7814

3.8898

2.5818

1.4458

0.6540

SAMPLE

SAMPLE

CENTER

LENGTH

METHODS

.CM

. CM

1

O)

Page 65: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SEA276WG

SAMPLE

TOTAL

SAMPLE

SAMPLE

CRUISE

STATION

TYPE/NUMBER

LENGTH

CENTER

LENGTH

METHODS

S276WG

S-34

S34S1

M .CM

CM

1

* FREQUENCY VS

. SIZE

46 45 44 43 42

41 40 39

38 37 36 35 34 33 3?

*31 30 29 28

*27 26 25 24 23 2? 21 20 19 18 17 16

*

15 14 13 1? 11 109 8 7

*6

*5 4

*

1

**0

**********

-1

-8-7-6-5-4-3-2-1

0 1

2 3

4 5 67

s 9

10

11

12

3 14 PHI

256

64

16

4 1

.25

.0625

.0156

.0039

.00098

.00024

.00006

MM

MID-POINT

Page 66: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SEA276WG

SAMPLE

TOTAL

SAMPLE

CRUISE

STATION

TYPE/NUMBER

LENGTH

CENTER

S276UG

S-34

S34S1

. M

. C

% CUMULATIVE PERCENT VS. SIZE

1009896

949290

88

86

84 828078 76

74 72

70

6866

646260

5856

54 52 50

4846

444240

£3836

34 32 3028

26

24

12220 18 16

1412 10 8 6

^4

!

I ..

......./

-8

-7

-6

-5

-4 -3-2-1

0 1

2256

64

16

4 1

.25

SAMPLE

LENGTH

METHODS

M CM

1

J^*

<f)

i I j I I <3 f 1 1 1 I 1 )

) ..I...I... 1... 1... 1... I...I... I...I...I ...1... 1

3 4

5 6

7 8

91011 121314 PHI

.0625

.0156

.0039

.00098

.00024

.00006

MM

0)

U)

Page 67: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SEA276WG

CRUISE

S276WG

SAMPLE

TOTAL

SAMPLE

SAMPLE

STATION

TYPE^NUMBER

LENGTH

CENTER

LENGTH

METHODS

S-44

S 44

M .CM

CM

1

*F:SV=20,ST= 0/H=0;wT:SV*29.0800/ST= 0.0000/H/P* 0.0000; PHI LIM:CS* 0.00/FN* 0.00

SAMPLE ANALYZED BY THE FOLLOWING METHOD(S):

2.0000-

0.0625MM

SIEVES

UNEDITED SAMPLE WEIGHTS IN GRAMS:

-SIE

VES.

- BSa __

29.0

800

PARTICLE SIZE DISTRIBUTION:

Etil

__

0.7500

0.5000

0.2500

0.0000

0.2500

0.5000

0.7500

1 .0000

1.2500

1.5000

1 .7500

2.0000

2.2500

2.5000

2.7500

3.0000

3.2500

3.5000

3.7500

4.0000

T.6818

1.4142

1.1892

1.0000

0.8409

0.7071

0.5946

0.5000

0.4204

0.3536

0.2973

0.2500

0.2102

0.1768

0.1486

0.1250

0.1051

0.0884

0.0743

0.0625

0.344

0.516

0.653

0.928

1.651

1.685

2.992

3.542

10.488

30.502

17.297

12.895

8.047

2,682

3.542

0.963

0.585

0.275

0.206

0.206

CUM

EEfi

tELI

I 0.344

0.860

1.513

2.442

4.092

5.777

8.769

12.311

22.799

53.301

70.598

83.494

91.541

94.223

97.765

98.728

99.312

99.587

99.794

100.000

SIZE CLASS RATIOS:

GRAVEL*

O.OOOPCT

SAND

SILT

CLAY

MUD

GRAVEL/SAND^

__PA,N. __

«I2JAk __

29.0800 <G

>

0.000

100.000PCT

-O.OOOPCT

O.OOOPCT

-O.OOOPCT

SAND/SILT

**********

SILT/CLAY

=SAND/CLAY

=0.000

0.000

SAND/MUD

a*********

GRAVEL/MUD =

0.000

0)

Page 68: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SEA276WG

CRUISE

S276WG

STATION

S-44

SAMPLE

TYPExNUMBER

S 44

TOTAL

LENGTH M

SAMPLE

CENTER

.CM

SAMPLE

LENGTH CM

METHODS

1

INTERPOLATED SIZES USED IN GRAPHICAL STATISTICS

CUM-EEBCEN.I

PHI MM

05. 00

0.390

0.7632

10*0

00.844

0.5569

16*00

1.135

0.4555

£5.00

1.276

0.4130

20.0

01.484

0.3574

Z5.

QQ

1.8

22

0.2

829

24.0

02

.00

40

.24

94

80

.00

2.1

70

0.2

22

2

22.0

02

.51

40.1

751

PH

I M

M

GRAPHICAL STATISTICS:

MEDIAN*

1.4842

MEDIAN*

1.4842

MEAN

= 1.5408

MEAN

* 1.5691

SORTING*

0.5391

SORTING*

0.4346

SKEWNESS*

0.0824 SKEW 16/84*

0.1953

SKEW 05/95= -0.0746

KURTOSIS*

1.5941

KURTOSIS=

1.4436

MEDIAN*

MEAN

=SORTING*

SKEWNESS=

0.3574

0.3479

1.2083

0.9143

KURTOSIS*

0.1944

CLASS MID-POINTS(PHI) USED IN THE MOMENT CALCULATIONS:

-0.88

-0.63

-0.38

-0.13

0.13

0.38

0.63

0.88

2.88

3.13

3.38

3.63

3.88

1.13

1.38

1.63

1.88

2.13

2.38

2.63

MOMENT MEASURES:

FIRST (ABOUT ORIGIN)*

SECOND (ABOUT MEAN)

= SECOND (ABOUT MEAN)

*

EHl__

__MM__

1.5069

0.3519

0.3808 VARIANCE

0.6171 STANDARD DEVIATION

THIRD (ABOUT MEAN)

= -0.1642

FOURTH (ABOUT MEAN)

s 1.1803

O) en

Page 69: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SEA276WG

SAMPLE

TOTAL

SACRUISE

STATION

TYPE/NUMBER

LENGTH

CS276WG

S

MODAL ANALYSI

-44

S2

MODE(S) DETECTED

__£&!__

--0.750

-0.500

-0.250

0.000

0.250

0.500

0.750

1.000

1.250

1.500

1.750

2.000

2.250

2.500

2.750

3.00

03.250

3.500

3.750

4.000

-_MM__

1 .6818

1.4142

1.1892

1.0000

0.8409

0.7071

0.5946

0.5000

0.4204

0.3536

0.2973

0.2500

0.2102

0.1768

0.1486

0.1250

0.1051

0.0884

0.0743

0.0625

S 44

. M

IN THIS SAMPLE.

P.&&

&EUI

0.3439

0.5158

0.6534

0.9285

1 .6506

1.6850

2.9917

3.5420

10.4883

30.5021

** MO

DE **

17.2971

12.8955

8.0468

2.6823

3.5420

** MO

DE **

0.9629

0.5846

0.2751

0.2063

0.2063

SAMPLE

CENTER

LENGTH

METH

ODS

CM

CM

1

O)

0)

Page 70: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SEA276UG

SAMPLE

TOTAL

SAMPLE

SAMPLE

CRUISE

STATION

TYPE,NUMBER

LENGTH

CENTER

LENGTH

METHODS

S276WG

S-44

S 44

M .CM

CM

1

X FREQUENCY VS

. SIZE

46 45 44 A3 42 41 40 39 38 37 36 35 34 33 32 31

*30 29 28 27

26 25 24 23 22 21 20 19 18 17

*16 15 U 13

*

12 11 10

*9 8

*7 6 5 4

* *

3 *

* _.

2 **

O>

1 ***

**

Xl

0 *

* **

-1I...:...:...:...:...:...:...:...:...:...:...:...:...:...:...:...:...:...:...:...:...:...:...:

-8-7-6-5-4-3-2-1

0 1

2 3

4 5

6 7

8 9

10

11

12

13

14 PHI

256

64

16

4 1

.25

.0625

.0156

.0039

.00098

.00024

.00006

MM

MID-POINT

Page 71: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SEA276WG

SAMPLE

TOTAL

SAMPLE

SAMPLE

CRUISE

STATION

TYPE»NUMBER

LENGTH

CENTER

LENGTH

METHODS

S276WG

S-44

S 44

M .CM

CM

1

10098

96

94 92 90

88

86 848280

78

76 74 72 70

6866

646260 58 56

5452 50

4846

444240 38

36

34

32 30

2826

24 22

20 1816 14 1 2

10 8 6 4 2 0

r

O)

00

'tj

..I... I... I...I... I... I... I...

I'.'..

I..

. I... I..

.I..

.I..

.I..

. I .

..I...I ..

.I..

. I...I...I...I... I

-8-7-6-5-4-3-2-1

0 1

2 3

4 5

6 7

8 9

10

11

12

13

14 PHI

256

64

16

4 1

.25

.0625

.0156

.0039

.00098

.00024

.00006

MM

Page 72: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SEA276WG

SAMPLE

TOTAL

SAMPLE

SAMPLfc

CRUISE

STATION

TYPE, NUMBER

LENGTH

CENTER

LENGTH

METHODS

S276WG

S-44S2

S44S2

M .CM

CM

1

*F:SV*20,ST= 0,H*0;WT:SV=24.2800,ST= 0.0000,H/P= 0.0000; PHI

LIM:CS«

SAMPLE ANALYZED BY THE FOLLOWING METHOD(S):

___ S

UE

-BA

Bfif

..M

EItififi _

_______

2.0

000-

0.0

625M

M

SIE

VE

S

UNEDITED SAMPLE WEIGHTS IN GRAMS:

_SUKES__ BSA __

24.270

0

PARTICLE SIZE DISTRIBUTION:

0.00

24.2700 (G)

0.7500

0.5000

0.2500

0.0000

0.2500

0.5000

0.7500

1.0000

2500

5000

7500

0000

2500

5000

7500

0000

2500

5000

3.7500

4.0000

--B

B-.

1

.68

18

1.4

142

1.1

892

1.0

000

0.8

40

90

.70

71

0.5

94

60.5

00

00.4

204

0.3

536

0.2

97

30.2

50

00.2

102

0.1

76

80.1

48

60.1

250

0.1

051

0.0

884

0.0

743

0.0

62

5

1.3

19

2.6

78

2.6

37

3.0

90

3.2

14

3.3

37

3.1

31

2.8

02

7.5

40

32

.46

818.7

89

10.7

13

5.1

50

1.3

60

1.2

77

0.1

65

0.1

65

0.0

82

0.0

62

0.0

21

CU

M

EEfi£

£&ii

1.3

19

3.9

97

6.6

34

9.7

24

12.9

38

16.2

75

19

.40

72

2.2

08

29

.74

96

2.2

17

81

.00

59

1.7

18

96

.86

99

8.2

28

99

.50

69

9.6

70

99

.83

59

9.9

18

99

.97

91

00

.00

0

SIZE CLASS RATIOS:

GRAVEL=

O.OOOPCT

SAND

SILT

CLAY

MUD

100.000PCT

O.OOOPCT

O.OOOPCT

O.OOOPCT

SAND/SILT

SILT/CLAY

SAND/CLAY

SAND/MUD

GRAVEL/MUD

GRAVEL/SAND=

0.000

=99999.999

0.000

= 0.000

=99999.999

« 0.000

O)

(O

Page 73: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SEA276UG

CRUISE

S276WG

SAMPLE

TOTAL

SAMPLE

SAMPLE

STATION

TYPE,NUMBER

LENGTH

CENTER

LENGTH

METHODS

S-44S2

S44S2

. M

.CM

. CM

1

INTERPOLATED SIZES USED IN GRAPHICAL STATISTICS:

CU

M-E

E&C

ENI

Q5*

QQ

10

.QQ

16

.OQ

25

.QC

PH

I -0

.403

0.0

22

0.4

79

1.1

33

MM

1.3

224

0.9

85

0

0.7

17

4

0.4

56

1

GRAPHICAL STATISTICS:

1.471

0.3607

Z5.Q

Q1.653

0.3180

34.QQ

1.798

0.2877

2Q.Q

Q1.945

0.2597

2.09

10.2348

PHI

MM

MEDIAN*

1.4711

MEDIAN*

1.4711

MEDIAN*

0.3607

MEAN

*SORTING*

SKEWNESS*

KURTOSIS=

1. 0.

-o. 1.

2493

7074

5039

9650

MEAN

*SORTING*

SKEW 16/84*

SKEW 05/95*

KURTOSIS*

1 0-0-0 0

. . . « .

1384

6592

5047

9517

8916

MEAN

SORTING

SKEWNESS

KURTOSIS

c E c E

0 1 1 0

*

3870

1975

1 14

7

0952

CLASS MID-POINTS(PHI) USED IN THE MOMENT CALCULATIONS:

-0.88

-0.63

-0.38

-0.13

0.13

0.38

0.63

0.88

2.88

3.13

3.38

3.63

3.88

1.13

1.38

1.63

1.88

2.13

2.38

2.63

MOMENT MEASURES:

FIRST (ABOUT ORIGIN)

SECOND (ABOUT MEAN)

SECOND (ABOUT MEAN)

__£UI__

__MM__

1.2470

0.4213

0.5382 VARIANCE

0.7336 STANDARD DEVIATION

THIRD (ABOUT MEAN)

= -0.5160

FOURTH (ABOUT MEAN)

* 0.5049

o

Page 74: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SEA276WG

CRUISE

STATION

S276WG

S-44S2

SAMPLE

TOTAL

SATYPE*NUMBER

LENGTH

CS44S2

. M

MODAL ANALYSIS

3 MODE(S)

Ettl

-0.750

-0.500

-0.250

0.000

0.250

0.500

0.750

1.000

1.250

1.500

1 .750

2.000

2.250

2.500

2.750

3.000

3.250

3.500

3.750

4.000

DETECTED

__ MB.

.1.6818

1 .4

142

1.1892

1 .0000

0.8409

0.7071

0.5946

0.5000

0.4204

0.3536

0.2973

0.2500

0.2102

0.1 768

0.1486

0.1250

0.1051

0.0884

0.0743

0.0625

IN THIS SAMPLE.

EE

fitf

iN.1

1.3185

2.6782

** MO

DE **

2.6370

3.0902

3.2138

3.3375

** MO

DE **

3.1314

2.8018

7.5402

32.4681

** MO

DE **

18.7886

10.7128

5.1 50

41.3597

1.2773

0.1648

0.1648

0.0824

0.0618

0.0206

E SAMPLE

CENTER

LENGTH

METHODS

CM

. CM

1

Page 75: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SEA276WG

SAMPLE

TOTAL

SAMPLE

SAMPLE

CRUISE

STATION

TYPE, NUMBER

LENGTH

CENTER

LENGTH

METHODS

S276UG

S-44S2

S44S2

. M

.CM

CM

1

46 45 44 43 42 41 40 39 38 37 36

35 34 33 32 31 30

29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2

-P

-7

-6

-5

-4

-3

-2

-1

0 1

2 3

4 5

6 7 89

10

11

12

13

14 PHI

256

64

16

4 1

.25

.0625

.0156

.0039

.00098

.00024

.00006

MM

MID-POINT

Page 76: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SEA276WG

SAMPLE

TOTAL

SAMPLE

SAMPLE

CRUISE

STATION

TYPE/NUMBER

LENGTH

CENTER

LENGTH

METHODS

S276WG

S-44S2

S44S2

M .CM

CM

1

* 100

98

96

94

92

90

88

86

84

82

80

78

76

74

72

70

68

66

64

62

60

58

56

54

52

50

48

46

44

42

40

38

36

34

32

30

28

26

24

22

20

18

16

14

12

10 8 6 4 2 0

XI U)

-8-7-6-5-4-3-2-1

0 1

2 3

4 5

6 7

8 9

10

11

12

13

14 PHI

256

64

16

4 1

.25

.0625

.0156

.0039

.00098

.00024

.00006

MM

Page 77: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

bE

A

CF

UI

bt-

b

TM

Iur

\L

AT '^

S 2

7 d

MI L

'-/.

<'

ft F

: b

V =

.'.

,:.:=

,,,

S A

1-1

P L

C

A <

.M

Y .'

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Page 78: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

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Page 79: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

f- , ;- {.. ;,> r\j iv

c: c c r '_ (j c

Page 80: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

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90UOO*

«000'

«6000*

6fOfi' 9510*

f,?°t1- W

IH

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Page 81: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SEA37&WG

SAMPLE

TOTAL

SAMPLE

SAMPLE

CRUISt

STATION

T YPE,fJUHbEf<

I t N G T H

CENTER

LENGTH

METHODS

S276toG

S-47

S47S1

. M

.CM

CM

1

X CUMULATIVE PERCENT VS. SIZE

100 96

94

92

90

88

86

84

82

80

78

76

74

72

70

68

66

64

62

60

58

56

54

52

50

48

46

44

42

40

38

36

34

32

30

28

26

24

22

20

18

16

1 4

1 2

10 8 6 t, 2 0

-b

-7

-6

-5

-4

-3

-2

-1

0 1

2 3

4 5

6 7

8 9

10

11

12

13

14

PH

I2

r><

64

1

6

4 1

.25

.0

62

5

.01

56

.0

03

9

.00

09

8

.00024

.00006

MM

Page 82: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SEA276WG

SAMPLE

TOTAL

SAMPLE

SAMPLE

CRUISE

STATION

TYPE,NUMBER

LENGTH

CENTER

LENGTH

METHODS

S276WG

S-152

S152

. M

.CM

. CM

1

#F:SV=20/ST» 0/H=0;WT:SV=26,9200/ST= 0.0000/H/P* 0.0000; PHI LIM:CS= 0.00,FN= 0.00

SAMPLE ANALYZED BY THE FOLLOWING METHOD(S):

___SliE_BAN£E_-

.-BEIHQD. ___

2.0000-

0.0625MM

SIEVES

UNEDITED SAMPLE WEIGHTS IN GRAMS:

-SIEVES

_.BSA___

HI&BQEHQIQM.EIEB-

26.8700

PARTICLE SIZE DISTRIBUTION:

.em

_ 0

.75

00

0.5

00

0 0

.2500

0.0

00

0

0.2

500

0.5

00

0

0.7

50

0

1.0

00

0

1 .2

50

0

1 .5

00

0

1.7

500

,0000

,250

0,5000

,7500

0000

2500

5000

,7500

A.0000

SIZE CLASS RATIOS:

GRAVEL*

SAND

= SILT

= CLAY

= MUD

=

BU

1.6818

1.4142

1. 1892

1.0000

0.8409

0.7071

0.5946

0.5000

0.4204

0.3536

0,2973

0.2500

0.2102

0.1768

0.1486

0.1250

0.1051

0.0884

0.0743

0.0625

PEBC

Etll

0.037

0.037

0.037

0.037

0.149

0.149

0.893

3.722

19.352

40.863

13.398

8.709

6.736

2.419

1.861

0.744

0.484

0.186

0.112

0.074

CUM

EEBC

EN.I

0.037

0.074

0.112

0.149

0.298

0.447

1.340

5.061

24.414

65.277

78.675

87.384

94.120

96.539

98.400

99.144

99.628

99.814

99.926

100.000

.IQIAL__

26.8700 (G

)

O.OOOPCT

100.000PCT

-O.OOOPCT

O.OOOPCT

-O.OOOPCT

GRAVEL/SAND>

SAND/SILT

****

SILT/CLAY

=SAND/CLAY

=SAND/MUD

s***

GRAVEL/MUD =

0.000

0.000

0.000

******

0.000

CD

Page 83: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SEA276W6

CRUISE

S276WG

SAMPLE

TOTAL

SAMPLE

SAMPLE

STATION

TYPE,NUMBER

LENGTH

CENTER

LENGTH

S-152

S152

. M

.CM

.CM

METHODS

1

INTERPOLATED SIZES USED IN

0.996

0.5014

PHI

MM

GRAPHICAL

1Q.QQ

1.152

0.4502

STATISTICS:

IfuQQ

1.141

0.4533

1 .2

520.4198

1.383

0.3833

1.669

0.3144

fii.

flQ

1.89

40.2691

2.055

0.2406

2.331

PHI

0.1987

MM

GRAPHICAL STATISTICS:

EQ

U.&

-U&

K&

.iEti

UMEDIANS

1.3834

MEAN

sSORTING=

SKEUNESS'

MEDIAN^

MEAN

SORTING:

1.4729

0.3905

0.3880 SKEW 16/84=

SKEW

05/95=

1.3834

1.5176

0.3763

0.3565

0.7443

MEDIAN*

3833

MEAN

* 0.3671

SORTING*

1.1555

SKEWNESS=

0.8984

KURTOSIS=

1.3124

KURTOSIS=

0.7743

KURTOSIS=

0.2515

CLASS MID-POINTS(PHI) USED IN THE MOMENT CALCULATIONS:

-0.88

-0.63

-0.38

-0.13

0.13

0.38

0.63

2.88

3.13

3.38

3.63

3.88

0.88

1.13

1.38

1.63

1.88

2.13

2.38

2.63

MOMENT MEASURES:

FIRST (ABOUT ORIGIN)=

SECOND (ABOUT MEAN)

= SECOND (ABOUT MEAN) =

EU1__

__SI)__

1.4979

0.3541

0.1911 VARIANCE

0.4371 STANDARD DEVIATION

THIRD (A

BOUT

MEAN)

s 0.5602

FOURTH (ABOUT ME

AN)

1.7280

00

O

Page 84: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SE

A2

76

WG

CRUISE

STATION

S276WG

MODAL ANALY

1 MODE(S)

..eai._

-0.750

-0.500

-0.250

0.000

0.250

0.500

0.750

1.000

1.250

1.500

1.750

2.000

2.250

2.500

2.750

3.000

3.250

3.500

3.750

A. 000

S-152

SIS DETECTED

__ MM__

1.6818

1 .4142

1.1892

1.0000

0.8409

0.7071

0.5946

0.5000

0.4204

0.3536

0.2973

0.2500

0.2102

0.1768

0.1486

0.1250

0.1051

0.0884

0.0743

0.0625

SAMPLE

TOTAL

SAMPLE

SAMPLE

TYPE, NUMBER

LENGTH

CENTER

LENGTH

METHODS

S152

. M

.CM

. CM

1

IN THIS SAMPLE.

EEfitEMI

0.0372

0.0372

0.0372

0.0372

0.1489

0.1489

0.8932

3.7216

19.3524

40.8634

** MODE **

13.3978

8.7086

6.7361

2.4191

1.8608

0.7443

0.4838

0.1861

0.1116

0.0744

00

Page 85: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SEA276WG

SAMPLE

TOTAL

SAMPLE

SAMPLE

CRUISE

STATION

TYPE/NUMBER

LENGTH

CENTER

LENGTH

METHODS

S276WG

S-152

S152

. M

.CM

CM

1

X 4645 44 43

42

41

*40 39

38

3736 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19

*18 17 16 15 14 13

*12 11 109

*8 7

*6 !

' OD

2 **

FV>

1 *

* 0

******

****

-1

-8-7-6-5-4-3-2-1

0 1

2 3

4 5

6 7

8 9

10

11

12

13

14 PH

I 25

6 64

16

4 1

.25

.0625

.0156

.0039

.00098

.00024

.00006

MMMID-POINT

Page 86: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SEA276WG

SAMPLE

TOTAL

SAMPLE

SAMPLE

CRUISE

STATION

TYPE,NUMBER

LENGTH

CENTER

LENGTH

METHODS

S276UG

S-152

S152

. M

.CM

. CM

1

2 CUMULATIVE PERCENT VS

. SIZE

10098

96 94 92 90

88 86

84 82 80 78 76 74 72 70 68 66 64 62 60 58 56 54 52 50

48 46

44 42 40 38 36 34 32 30 28 26 24

f 22

20

/18 16 14 12 108 6

I

\ f

o . .

. . .

.<y

:... I... I.

.. I... I.

.. I..

. I.

.. I... I... I...

-8

-7

-6

-5

-4

-3 -2-1 01

256

64

16

4 1

$

9 1 1 i ? 1 I f I | ? ? . ..

1 ...1 .

..

1 ..

. 1... 1

...

1...

1 ... 1... 1

...

1 ... 1

...

1 ...

12

3 4

5 6

7 8

9 1 0

1 1

1 2

1 3

1 4

PH I

.25

.0625

.0156

.0039

.00098

.00024

.00006

MM

00

GJ

Page 87: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SEA276WG

SAMPLE

TOTAL

SAMPLE

SAMPLE

CRUISE

STATION

TYPE, NUMBER

LENGTH

CENTER

LENGTH

METHODS

S276WG

S-153

S153

. M

.CM

. CM

1

#F:SV=20,ST= 0,H=0;WT:SV=30.0500,ST= 0.0000,H/P= O.OOOO; PH

I LIM:CS

SAMPLE ANALYZED BY THE FOLLOWING METHOD(S):

___ SLZ

t.fi

A5lf

i£..

..

UEia

QB.-

.- __

2.0000-

0.0625MM

SIEVES

0.00

UNEDITED SAMPLE WEIGHTS IN GRAMS:

-SIEVES

..BSA ___

HIfi

BQEH

.QIQ

MEJ.

EB-

30.0600

PARTICLE SIZE DISTRIBUTION:

CUM

0.7

500

0.5

000

0.2

50

0

0.0

000

0.2

50

0

0.5

00

0

0.7

500

1.0

000

1.2

50

0

1.5

00

0

1.7

500

2.0

00

0

2.2

500

500U

75

00

0000

2500

50

00

7500

4.0000

SIZE CLASS RATIOS:

GRAVEL*

O.OOOPCT

SAND

SILT

CLAY

MUD

1.6818

1.4142

1.1892

1.0000

0.8409

0.7071

0.5946

0.5000

0.4204

0.3536

0.2973

0.2500

0.2102

0.1768

0.1486

0. 1250

0.1051

0.0884

0.0743

0.0625

0.000

0.033

0.033

0.033

0.033

0.033

0.033

0.100

0.166

0.333

0.432

1.331

16.334

20.293

45.975

10.612

2.728

0.732

0.466

0.299

0.000

0.033

0.067

0.100

0.133

0.166

0.200

0.299

0.466

0.798

1.231

2.562

18.896

39.188

85.163

95.775

98.503

99.235

99.701

100.000

GRAVEL/SANDs

.IQIAL__

30.0600 (G)

0.000

100.000PCT

-O.OOOPCT

O.OOOPCT

-O.OOOPCT

SAND/SILT

a*********

SILT/CLAY

= 0.000

SAND/CLAY

= 0.000

SAND/MUD

s*********

GRAVEL/MUD

* 0.000

00

Page 88: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SEA276WG

CRUISE

S276WG

SAMPLE

TOTAL

SAMPLE

SAMPLE

STATION

TYPE^NUMBER

LENGTH

CENTER

LENGTH

METHODS

S-153

S153

. M

.CM

. CM

1

INT

ER

PO

LA

TE

D

SIZ

ES

U

SE

D

IN£U

M.£

£fit

£LiI

05

*00

PH

I 2.2

04

MM

0

.21

70

GR

AP

HIC

AL

S

TA

TIS

TIC

S:

GRAPHICAL

10*00

2.1U

0.2310

STATISTICS:

16*00

2.206

0.2168

a**O

Q2.333

0.1984

50.0

02.518

0.1746

ME

DIA

NS

ME

AN

~

SO

RT

ING

sS

KE

UN

ES

Ss

2.5

17

72

.48

71

0.2

47

8-0

.00

02

ME

DIA

NS

ME

AN

s

SO

RT

ING

^S

KE

W

16/8

4s

SK

EW

0

5/9

5=

2.5

17

72

.47

19

0.2

662

-0.1

721

0.2

441

KURTOSIS

0.9629

KURTOSIS

MEDI

AN^

0.1746

ME

AN

s

0.1

78

6S

OR

TIN

GS

1

.11

81

SK

EW

NE

SS

s 1.0

329

0.4217

KURTOSISs

0.2302

CLASS MID-POINTS(PHI )

USED IN THE MOMENT CALCULATIONS:

-0.88

-0.63

-0.38

-0.13

0.13

0.38

0.63

0.88

2.88

3.13

3.38

3.63

3.88

25.00

2.655

0.1587

84*00

2.738

0.1499

9.0*

002.788

0.1448

25.0

02.961

0.1284

PHI

MM

1.13

1.38

1.63

1.88

2.13

2.38

2.63

MOMENT MEASURES:

FIRST (ABOUT ORIGIN)*

SECOND (ABOUT MEAN)

= SECOND (ABOUT MEAN)

*

2.5187

0.1070 VARIANCE

0.3272 STANDARD DEVIATION

THIRD (ABOUT MEAN)

» -0.5133

FOURTH (ABOUT MEAN)

s 5.0054

.-B

B

0.1

74

5

(X) en

Page 89: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SEA276WG

SAMPLE

TOTAL

SACRUISE

STATION

TYPE/NUMBER

LENGTH

CS276UG

S-153

S153

. M

MODAL ANALYSIS

1 10DE(S)

Eti

JL-

-0.750

-0.500

-0.250

0.000

0.250

0.500

0.750

1.000

1.250

1.500

1.750

2.000

2.250

2.500

2.750

3.000

3.250

3.500

3.750

4.000

DETECTED

__ HB.-

1.6818

1.4142

1.1892

1.0000

0.8409

0.7071

0.5946

0.5000

0.4204

0.3536

0.2973

0.2500

0.2102

0.1768

0.1486

0.1250

0.1051

0.0884

0.0743

0.0625

IN THIS SAMPLE.

E&&£

£N.I

0.0000

0.0333

0.0333

0.0333

0.0333

0.0333

0.0333

0.0998

0.1663

0.3327

0.4325

1.3307

16.3340

20.2927

45.9747

** MODE **

10.6121

2.7279

0.7319

0.4657

0.2994

E SAMPLE

CENT

ER

LENGTH

METH

ODS

CM

. CM

1

00

O)

Page 90: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SEA276WG

SAMPLE

TOTAL

SAMPLE

SAMPLE

CRUISE

STATION

TYPE, NUMBER

LENGTH

CENTER

LENGTH

METHODS

S276WG

S-153

S153

. M

.CM

. CM

1

45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 109 8 7 6 5 4 3 2 1 0

-100

.:...:...:...:...:...:...:...:...:...:...:...:...:...:...:...:...:...:...:...:...:...:...:

Xj

-8-7-6-5-4-3-2-1

0 1

2 3

4 5

6 7

8 9

10

11

12

13

14 PHI

256

64

16

4 1

.25

.0625

.0156

.0039

.00098

.00024

.00006

MM

MID-POINT

Page 91: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SEA276WG

SAMPLE

TOTAL

SAMPLE

SAMPLE

CRUISE

STATION

TYPE,NUMBER

LENGTH

CENTER

LENGTH

METHODS

S276WG

S-153

S153

. M

.CM

. CM

1

X 100

98

96

94

92

90

88

86

84

82

80

78

76

74

72

70

68

66

64

62

60

58

56

54

52

50

48

46

44

42

40

38

36

34

32

30

28

26

24

22

20

18

16

14

12

10 8 6 4 2 0

oo 00

..I...I...I...I...I...I...I...I...I...I...I...I...I...I...I...I...I...I...I...I.,.I... I..

. I

-8-7-6-5-4-3-2-1

0 1

2 3

4 5

6 7

8 9

10

11

12

13

14 PHI

256

64

16

4 1

.25

.0625

.0156

.0039

.00098

.00024

.00006

MM

Page 92: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SEA276WG

CRUISE

S276WG

STATION

153-S1

SAMPLE

TYPE,NUMBER

S 153

TOTAL

LENGTH

. M

SAMPLE

CENTER

. CM

SAMPLE

LENGTH

. CM

METHODS

2

SEQUENCE NO,

26

13

21 8

17 207

16 18 155 2 22 25 12 9 3

19 23 146 1

10 24 11

SUMMARY OF THE PREVIOUS

26 SAMPLES

** MEAN **

SAMPLES ARE LISTED IN ORDER OF INCREASING MEAN SIZE

S276WG

S276WG

S276WG

S276WG

S276WG

S276WG

S276WG

S276WG

S276WG

S276WG

S276WG

S276WG

S276WG

S276WG

S276WG

S276WG

S276UG

S276WG

S276WG

S276WG

S276WG

S276WG

S276WG

S276WG

S276WG

S276WG

S-15

3ES-153

S-34

ES-34

S-29

ES-29

S-31

ES-3

1S-

28S-

30S-15

ES-30

ES-1

5S-

44S-152

ES-152

ES-44

ES-2

8S-

30S-44S2

S-14

ES-30

ES-14

ES44S2

S-47

ES-47

S1 53

S153

S34S1

S34S1

S29S1

S29S1

S31S1

S31S1

S28S1

S30S1

S15S1

S30S1

S15S1

S 44

S152

S152

S 44

S28S1

S30S2

S44S2

S 14

S30S2

S 14

S44S2

S47S1

S47S1

SAMPLE NAME

1ST

MOMENT (P

HI)

2.5187

2.5175

2.4317

2.4317

2.2094

2.2022

1.8569

1.8549

1.6845

1.6011

1.6000

1.5951

1.5530

1.5069

1.4979

1.4509

1.4502

1.3540

1.3226

1.2470

1.1913

1.1629

1.1560

0.8258

0.7333

0.4791

00

(D

Page 93: BOTTOM CHARACTERISTICS OF LOWER COOK INLET, ALASKAcharacteristics of the sand waves, especially the larger ones. Although bottom television observations indicate grain motion up to

SEA276WG

CRUISE

S276WG

SEQUENCE 103 2 6

11 15 23 9 1

19 14 22 24 12 165 4

18 17 25 218 7

20 13 26

SAMPLE

TOTAL

STATION

TYPE, NUMBER

LENGTH

153-S1

S 153

. M

SUMMARY

SAMPLES ARE

NO.

S276WG

S276WG

S276WG

S276WG

S276WG

S276WG

S276WG

S276WG

S276UG

S276WG

S276WG

S276WG

S276WG

S276WG

S276WG

S276WG

S276WG

S276UG

S276UG

S276WG

S276WG

S276UG

S276UG

S276WG

S276WG

S276WG

OF THE PREVI

LISTED IN OR

ES44S2 S44S2

ES-28 S28S1

ES-15 S15S1

ES-30 S30S2

ES-47 S47S1

S-15 S15S1

S-44S2 S44S2

ES-44

S 44

ES-14

S 14

S-30 S30S2

S-14

S 14

S-44

S 44

S-47 S47S1

ES-152 S152

S-28 S28S1

ES-30 S30S1

ES-29 S29S1

S-30 S30S1

S-29 S29S1

S-152 S152

S-34 S34S1

ES-34 S34S1

ES-31 S31S1

S-31 S31S1

ES-153 S153

S-153 S153

SAMPLE

SAMPLE

CENTER

LENGTH

METHODS

.CM

.CM

2

IS

26 SAMPLES

"STANDARD DEVIATION **

R OF DECREASING

DEVIATION.

SAMPLE NAME

2ND

MOMENT (P

HI)

1.1244

1.0382

0.8936

0.8626

0.8611

0.8274

0.7336

0.7201

0.6757

0.6365

0.6178

0.6171

0.6132

0.5556

0.5413

0.4931

0.4920

0.4768

0.4674

0.4371

0.4162

0.4162

0.4065

0.3993

0.3338

0.3272

NORMAL TERMINATION.

END OF INPUT DATA SET REACHED.

CO

O