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Joint observation of large-scale travelling ionospheric disturbances using SuperDARN Hokkaido radar and Eastern Siberia chirp sounders network Alexey Oinats 1 , Konstantin Kutelev 1 , Vladimir Kurkin 1 , Nozomu Nishitani 2 1 Institute of Solar-Terrestrial Physics, Russia, 664033, Irkutsk, P.O. Box 291, E-mail: [email protected] 2 Solar-Terrestrial Environment Laboratory, Nagoya University, Nagoya, Japan, E-mail: [email protected] European Geosciences Union General Assembly 2011 Vienna | Austria | 03 – 08 April 2011

Joint observation of large-scale travelling ionospheric disturbances using SuperDARN Hokkaido radar and Eastern Siberia chirp sounders network Alexey Oinats

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Page 1: Joint observation of large-scale travelling ionospheric disturbances using SuperDARN Hokkaido radar and Eastern Siberia chirp sounders network Alexey Oinats

Joint observation of large-scale travelling ionospheric disturbances using SuperDARN Hokkaido radar and Eastern Siberia chirp

sounders network

Alexey Oinats1, Konstantin Kutelev1, Vladimir Kurkin1, Nozomu Nishitani2

1Institute of Solar-Terrestrial Physics, Russia, 664033, Irkutsk, P.O. Box 291, E-mail: [email protected] 2Solar-Terrestrial Environment Laboratory, Nagoya University, Nagoya, Japan, E-mail: [email protected]

European Geosciences Union General Assembly 2011

Vienna | Austria | 03 – 08 April 2011

Page 2: Joint observation of large-scale travelling ionospheric disturbances using SuperDARN Hokkaido radar and Eastern Siberia chirp sounders network Alexey Oinats

EGU GA, Vienna, April 2011

80 100 120 140 160 180L o n g itu d e (g e o g .)

40

45

50

55

60

65

70

La

titu

de

(g

eo

g.)

H okka ido143.6oE43.5oN

Irkutsk104.0oE52.5oN

N orilsk88.1oE69.4oN

M agadan151.0oE60.1oN

beam 15

beam

0

125.0oE

58.5oN

98 .2oE

61.2oN

Scheme of the instruments location

Page 3: Joint observation of large-scale travelling ionospheric disturbances using SuperDARN Hokkaido radar and Eastern Siberia chirp sounders network Alexey Oinats

Chirp oblique incidence sounder data DPS-4 vertical sounder data

MOFMaximal

ObservableFrequency

Time resolution - 5 min Time resolution – 15 min

foF2Critical

Frequency ofF2 layer

hmF2Peak

Height ofF2 layer

EGU GA, Vienna, April 2011

[B.W. Reinisch, D.M. Haines, K. Bibl et al. 1997]

[V.A. Ivanov, V.I. Kurkin, V.E. Nosov et al., 2003]

Page 4: Joint observation of large-scale travelling ionospheric disturbances using SuperDARN Hokkaido radar and Eastern Siberia chirp sounders network Alexey Oinats

EGU GA, Vienna, April 2011

80 100 120 140 160 180L o n g itu d e (g e o g .)

40

45

50

55

60

65

70

La

titu

de

(g

eo

g.)

H okka ido143.6oE43.5oN

Irkutsk104.0oE52.5oN

N orilsk88.1oE69.4oN

M agadan151.0oE60.1oN

beam 15

beam

0

125.0oE

58.5oN

98 .2oE

61.2oN

Scheme of the instruments location

Page 5: Joint observation of large-scale travelling ionospheric disturbances using SuperDARN Hokkaido radar and Eastern Siberia chirp sounders network Alexey Oinats

SuperDARN HF radar data

17 17.125 17.25 17.375 17.5 17.625 17.75 17.875 18 18.125 18.25 18.375 18.5 18.625 18.75 18.875 190

1000

2000

3000

17 17.125 17.25 17.375 17.5 17.625 17.75 17.875 18 18.125 18.25 18.375 18.5 18.625 18.75 18.875 190

1000

2000

3000

16 16.125 16.25 16.375 16.5 16.625 16.75 16.875 17 17.125 17.25 17.375 17.5 17.625 17.75 17.875 18 18.125 18.25 18.375 18.5 18.625 18.75 18.875 190

1000

2000

3000

Beam 0

Beam 3

Beam 6

0 3 6 9 12 15 18 21 0 3 6 9 12 15 18 21 0 3 6 9 12 15 18 21 0

SuperDARN Hokkaido radar. March 16-18, 2007

Time resolution for the beam ~ 1 min

EGU GA, Vienna, April 2011

Page 6: Joint observation of large-scale travelling ionospheric disturbances using SuperDARN Hokkaido radar and Eastern Siberia chirp sounders network Alexey Oinats

Chirp oblique incidence sounding andvertical sounding

Ground backscatter sounding at fixed frequency (SuperDARN)

RTI plot for beam 0 (Hok)MOF for Magadan - Irkutsk

EGU GA, Vienna, April 2011

0 3 6 9 12 15 18 21 241000

1250

1500

1750

2000

0 3 6 9 1 2 1 5 1 8 2 16

9

1 2

1 5

1 8

MOF, MHz

UT

P, km

UT

Simulation for undisturbed conditions (IRI 2007)

Page 7: Joint observation of large-scale travelling ionospheric disturbances using SuperDARN Hokkaido radar and Eastern Siberia chirp sounders network Alexey Oinats

Chirp oblique incidence sounding andvertical sounding

Ground backscatter sounding at fixed frequency (SuperDARN)

0 3 6 9 12 15 18 21 241000

1250

1500

1750

2000

RTI plot for beam 0 (Hok)

0 3 6 9 1 2 1 5 1 8 2 16

9

1 2

1 5

1 8

MOF for Magadan - IrkutskSimulation for southward LSTID (160o, 1500km, 2.5 h, 10%)

EGU GA, Vienna, April 2011

MOF, MHz

UT

P, km

UT

Page 8: Joint observation of large-scale travelling ionospheric disturbances using SuperDARN Hokkaido radar and Eastern Siberia chirp sounders network Alexey Oinats

Pmin

ground backscatter leading edge(minimal group path)

SuperDARN HF radar data

17 17.125 17.25 17.375 17.5 17.625 17.75 17.875 18 18.125 18.25 18.375 18.5 18.625 18.75 18.875 190

1000

2000

3000

17 17.125 17.25 17.375 17.5 17.625 17.75 17.875 18 18.125 18.25 18.375 18.5 18.625 18.75 18.875 190

1000

2000

3000

16 16.125 16.25 16.375 16.5 16.625 16.75 16.875 17 17.125 17.25 17.375 17.5 17.625 17.75 17.875 18 18.125 18.25 18.375 18.5 18.625 18.75 18.875 190

1000

2000

3000

Beam 0

Beam 3

Beam 6

0 3 6 9 12 15 18 21 0 3 6 9 12 15 18 21 0 3 6 9 12 15 18 21 0

SuperDARN Hokkaido radar. March 16-18, 2007

EGU GA, Vienna, April 2011

[T.J.T. Karhunen, T.R. Robinson, N.F. Arnold , M.

Lester, 2006]

Page 9: Joint observation of large-scale travelling ionospheric disturbances using SuperDARN Hokkaido radar and Eastern Siberia chirp sounders network Alexey Oinats

500

1000

1500

2000

2500

t ime , UT

0

4

8

12

16

20 MOF, MH z

2

4

6

8

10

foF2, MH z

200

240

280

320

360hm F2, kmP, km

Mag-Irk

Nor-Irk

Irk

17 20 23 2 5 8 10 14 17

Observational data during March 17, 2007

EGU GA, Vienna, April 2011

Page 10: Joint observation of large-scale travelling ionospheric disturbances using SuperDARN Hokkaido radar and Eastern Siberia chirp sounders network Alexey Oinats

Correlation between variations of obtained parameters during March 17, 2007

EGU GA, Vienna, April 2011

-2

0

2

4

16 18 20 22 24 26 28 30 32 34 36 38-4

-2

0

2

4

-1.0

-0.8

-0.6

-0.4

-0.2

-0.0

0.2

0.4

0.6

0.8

1.0

foF2(Irk) vs MOF(Nor-Irk)

foF2(Irk) vs MOF(Mag-Irk)

-2

-1

0

1

2

3hmF2(Irk) vs minimal group path (Hok)

-2

0

2

4MOF(Nor-Irk) vs MOF(Mag-Irk)

17.03.200716.03.2007

hours after 0UT 16.03.2007

tim

e sh

ift,

ho

urs

Page 11: Joint observation of large-scale travelling ionospheric disturbances using SuperDARN Hokkaido radar and Eastern Siberia chirp sounders network Alexey Oinats

21 22 23 24 1 2 3 4 5 6 7time , UT

0

500

1000

1500

P, km

15

0

5

10

1

4

3

2

The absolute deviations of the minimal group path for all 16 beams of the SuperDARN Hokkaido radar on March 17, 2007

EGU GA, Vienna, April 2011

)exp( trkiA

1k

xy kk

)())((1

12 ijijijij ttyyxx

),())((1

12

jiijijij tyyxxtt

15

,0

2)),((),(ijj

jiji tt

Phase difference between two detectors:

Time moment for j-th detector:

Discrepancy between theoretical and measured time moments

Let assume

Determination of the TID parameters using the SuperDARN ground scatter

Page 12: Joint observation of large-scale travelling ionospheric disturbances using SuperDARN Hokkaido radar and Eastern Siberia chirp sounders network Alexey Oinats

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15beam num ber

-3000

-2000

-1000

0 t, s

142 144 146 148 150 152Long itude, deg.

42

44

46

48

50

Latit

ude,

de

g.

H ok

0 5

10

15

Determination of the TID parameters using the SuperDARN ground scatter

TID (0.7UT )

EGU GA, Vienna, April 2011

Instrument RCSN SuperDARN

Time, UT 23UT 2UT 23UT (N1) 0.7UT (N2)

Azimuth, deg. 240 220 160 153

Velocity, m/s 190 152 190 189

Page 13: Joint observation of large-scale travelling ionospheric disturbances using SuperDARN Hokkaido radar and Eastern Siberia chirp sounders network Alexey Oinats

Possible source of the TID

EGU GA, Vienna, April 2011

0

1 0

2 0

3 0a p

0 3 6 9 1 2 1 5 1 8 2 1 0 3 6 9 1 2 1 5 1 8 2 1 0 3 6 9 1 2 1 5 1 8 2 1U T

Kp=4

16.03.2007 17.03.2007 18.03.2007

Page 14: Joint observation of large-scale travelling ionospheric disturbances using SuperDARN Hokkaido radar and Eastern Siberia chirp sounders network Alexey Oinats

Conclusion

Large-scale travelling ionospheric disturbance was observed at the same time by SuperDARN Hokkiado radar and by East-Siberian chirp sounders network on March 17, 2007.

TID mostly propagates in southward direction that is typical for midlatitudes (T~2.5-3 h, ~1700-2000 km, ~190 m/s). The comparison between the two instruments shows a good agreement in estimated TID`s parameters. The possible source of the TID is an area at the boundary of the auroral oval.

The joint use of the SuperDARN Hokkaido HF radar and Russian chirp sounders network data allows to take more information about large-scale TID`s propagating in the Asia north-east. Future expansion of chirp sounders network and also installation of Russian segment SuperDARN radars will allow more possibilities in diagnostics of TIDs and identification their sources.

EGU GA, Vienna, April 2011

Page 15: Joint observation of large-scale travelling ionospheric disturbances using SuperDARN Hokkaido radar and Eastern Siberia chirp sounders network Alexey Oinats

Nearest future: Chirp sounders network expansion

EGU GA, Vienna, April 2011

Page 16: Joint observation of large-scale travelling ionospheric disturbances using SuperDARN Hokkaido radar and Eastern Siberia chirp sounders network Alexey Oinats

Nearest future: Russian segment of SuperDARN

EGU GA, Vienna, April 2011

Page 17: Joint observation of large-scale travelling ionospheric disturbances using SuperDARN Hokkaido radar and Eastern Siberia chirp sounders network Alexey Oinats

Thank you for attention!

Institute of Solar-Terrestrial Physics, Russia

Solar-Terrestrial Environment Laboratory,

Nagoya University, Nagoya, Japan