1998 Fiscal Year Annual Research Report

SuperDARNレーダーと地上共役点観測による極域電磁圏の南北対称性の研究

Research Project

Project/Area Number	09044106
Research Institution	National Institute of Polar Research
Principal Investigator	佐藤夏雄国立極地研究所, 情報科学センター, 教授 (50132709)
Co-Investigator(Kenkyū-buntansha)	西野正徳名古屋大学, 太陽地球環境研究所, 講師 (70023679) 麻生武彦国立極地研究所, 北極圏研究センター, 教授 (10026255) 江尻全機国立極地研究所, 資料系, 教授 (30013692) 巻田和男拓殖大学, 工学部, 教授 (40129945) 小川忠彦名古屋大学, 太陽地球環境研究所, 教授 (60271607)
Keywords	共役点 / オーロラ / HFレーダー / 衛星 / 磁気圏 / 電離圏 / 南極 / 北極域
Research Abstract	南極と北極での総合的地上観測やSuperDARNレーダー観測を用いて、両極域における電磁環境の比較とその変動を明らかにする事を目的にしている。本年度の国際学術による観測・研究実績の概要は以下のとおりである。 1. アイスランドにおけるオーロラ現象の南北共役点観測南極の昭和基地との可視オーロラの同時観測が可能な8-9月と2-3月の秋・春分時期に、アイスランドにおいてオーロラ同時観測を実施した。また、イメージング・リオメータを8月にアイスランドに設置し、天候に左右されることなく高エネルギーオーロラ降下粒子の共役性の観測が通年実施できる観測体制が整った。 2. HFレーダー観測昭和基地のHFレーダーは国際HFレーダー網観測(SuperDARN)の一環として活動している。本年度の1〜3月には、このSuperDARNレーダーを中心とし、EISCATレーダー、Geotail衛星との同時観測を企画し、磁気圏プラズマの時間的・空間的変動について貴重な観測情報を得る事ができた。特に、10〜20秒の短周期地磁気変動(Pc3)注目しての特別観測を企画・実施した。また、南極の中国中山基地とスバールバルとのカスプ域可視オーロラ共役点観測に呼応してのSuperDARN特別観測も3月に実施した。 3. スカンジナビアでのオーロラとEISCATレーダー観測キルナにてオーロラの立体観測を、FASTやGeotail衛星の軌道やEISCATレーダー視野に合わせて実施した。また、トロムソとロングイヤビエンにおいて、EISCATレーダーの特別観測を国際共同で実施した。

Research Products

(41 results)

All Other

All Publications (41 results)

[Publications] Sato,N., T.Nagaoka. K.Hashimoto, and T.Saemundsson: "Conjugacy of isolated auroral arcs and nonconjugate auroral breakups" J.Geophy.Res.103. 11,641-11,652 (1998)
[Publications] Sato,N., M.Morooka. K.Minatoya. and T.Saemundsson: "Nonconjugacy of pulsating auroral patches near L=6" Geophys.Res.,Lett.25. 3755-3758 (1998)
[Publications] Nose.M., T.Iyemori. M.Sugiura. J.A.Slavin. R.A.Hoffman. J.D.Winaingham. and N.Sato: "Electron precipilation accompanying Pc 5 pulsations observed by the DE satellites ans at a ground station" J.Geophys.Res.103. 17,587-17,604 (1998)
[Publications] Sato.N., M.Morooka. K.Minatoya. and T.Saemundsson: "Activities and forms of pulsating auroras at the conjugate-pair observatories nere L=6" Proc.NIPR Symp.Upper Atmos.Phys.11. 134-138 (1998)
[Publications] Hashimoto,K., and N.Sato: "Asymmetric auroral electrojet intensity at geomagnetic conjugate stations" Proc.NIPR Symp.Upper Atmos.Phys.12. 94-107 (1998)
[Publications] Ogawa,T., N.Nishitani. M.Pinnock. N.Sato. H.Yamagishi. and A.S.Yukimatu: "Polar Cap Patches and Auroral Blobs Observed with Antarctic HF Radar:Preliminary" Proc.NIPR Symp.Upper Atmos.Phys.11. 11-18 (1998)
[Publications] Ogawa,T., N.Nishitani. M.Pinnock. N.Sato. H.Yamagishi. and A.S.Yukimatu: "Antarctic HF Radar Observations of Irregularities Associated with Polar Patches and Auroral Blobs:A Case Study" J.Geophys.Res.103. 26,547-26,558 (1998)
[Publications] Fukumoto,M., N.Nishitani. T.Ogawa. N.Sato. H.Yamagishi. and A.S.Yukimatu: "Statistical analysis of echo power. Doppler velocity and spectral width obtained with the Syowa South HF radar" Advances in Polar Upper Atmosphere Research. in press.
[Publications] Fujita,Y., Yamagishi,H., and Sato,N.: "Seasonal variation of geomagnetic conjugate point lainude is auroral zume as observed with Syowa-Island conjugate pair of imaging nonmeters" Nankyoku Shiryo(Antarctic Record). 42, 1. 1-19 (1998)
[Publications] Nishino,M., H.Yamagishi, N.Sato, Y.Sanoo. R.Liu, H.Hu, and P.Stauning: "Initial results of imaging riometer observations at polar cap conjugate stations" Proc.NIPR Symp.Upper Atmos.Phys.12. 58-72 (1998)
[Publications] Watanabe,M., M.Pinnock,, A.S.Rodger, N.Sato, H.Yamagishi, A.S.Yukimatu. R.A.Greenwald, J.P.Villain, and M.R.Hairstoa: "Localized bursty flow in the nightside ionosphere-Implication for distant tail reconnection (extended abstract)" Proc.NIPR Symp.Upper Atmos., Phys.11. 143-149 (1998)
[Publications] Watanabe,M., M.Pinnock,, A.S.Rodger, N.Sato, H.Yamagishi, A.S.Yukimatu. R.A.Greenwald, J.P.Villain, and M.R.Hairstoa: "Localized activation of the distant tail neutral line just prior to substorm onsets" J.Geophys.Res.103. 17,651-17,669 (1998)
[Publications] Watanabe,M., M.Pinnock,, A.S.Rodger, N.Sato, H.Yamagishi, A.S.Yukimatu. R.A.Greenwald, J.P.Villain, and M.R.Hairstoa: "Fast equatorward separatrix motion in the nightside ionosphere just prior to substorm onset (extended abstract)" Proc.NIPR Symp.Upper Atmos., Phys.12. 148-155 (1999)
[Publications] Ejiri,M., T.Aso, M.Okada, M.Tsutsumi, M.Taguchi, N.Sato, and S.Okano: "Japanese research project on arctic and antarctic observations of the middle atmosphere" Adv.Space Res.in press.
[Publications] T.Kikuchi, M.Pinnock, A.S.Rodger, H.Luchr, T.Kitamura, H.Tachihara, M.Watanabe, N.Sato, and M.Ruobonierni: "Global evolution of a substorm-associated DP2 current system observed by SuperDARN and magnetometers" Advances in Space Research. in press.
[Publications] Yang.H., R.Liu, and N.Sato: "Study on pixel intensity correction in projection transform of all-sky auroral image" Proc.NIPR Symp.Upper Atmos.Phys.11. 55-60 (1998)
[Publications] Yamagishi,H., Y.Fujita, N.Sato, P.Stauning, M.Nishino, and K.Makita: "Conjugate features of aurorals observed by TV cameras and imaging riorneters at auroral zone and poiar cap conjugate-pair stations" Polar Cap Boundary Phenomena ed.by J.Moen et al.289-300 (1998)
[Publications] Watanabe,M., M.Pinnock,, A.S.Rodger, N.Sato, H.Yamagishi, A.S.Yukimatu. R.A.Greenwald, J.P.Villain, and M.R.Hairstoa: "Ionospheric signatures of distat tail reconnection observed just before substorm onsets" Proc.Substorms-4. 719-722 (1998)
[Publications] Ogawa,T.: "A Review of Radar and Satellite Beacon Observations of Atmospheric Gravity Waves at Syowa Station" Mem.Natl Inst.Polar Res., Spec.Issue. 52. 28-43 (1998)
[Publications] Buchert,S.C., A.P.van Eyken, T.Ogawa, and S.Watanabe: "Naturally Enhanced Ion-Acoustic Lines Seen with the ESR" Advances in Space Research. in press.
[Publications] M.Nishino, S.Nozawa, and J.A.Holtet: "Daytime ionospheric absorptions in the polar cap associated with poleward drifting F-region plasma patches" Earth, Planets and Space. 50, 2. 107-117 (1998)
[Publications] Nishino,M., N.Goroknov, Y.Tanaka, H.Yamagishi, and T.Hansen: "Probe experiment characterizing 30 MHz radio wave scatter in the high-latitudeionosphere" Radio Science. in press.
[Publications] Kadokura,A., M.Ejiri, and T.Oguti: "Ionospheric chauve of the substorm current murduc system doubled from the visible annural inappear abroad AKEBONO (Extended abstract)" Proc.NIPR Symp.Upper Atmos.Phys.11. 139-142 (1998)
[Publications] Lewis,R.V., M.P.Freeman, A.S.Rodger, M.Watanabe, and R.A.Greenwald: "The behaviour of the electric field within the substorm current wedge" J.Geophys.Res.103. 179-190 (1998)
[Publications] Watanabe,M., T.Iijima, M.Nakagawa, T.A.Potemra, L.J.Zanetti, S.-I.Ohtani, and T.Newell: "Field-aligned current systems in the magnetospheric ground state" J.Geophys.Res.103. 6,853-6,869 (1998)
[Publications] Okada,K., O.Saka, and O.Watanabe: "Correlation between Pi 2 at nightside geosynchronous orbit and auroral modulation" Proc.NIPR Symp.Upper Atmos.Phys.11. 131-136 (1998)
[Publications] Saka,O., H.Akaki, O.Watanabe, M.Shinohara, and D.N.Baker: "An initial response of magnetic fields at geosynchronous orbit to Pi 2 onset as observed from the dip-equator" Ann.Geophysicae. 16. 542-548 (1998)
[Publications] Saka,O., H.Akaki, O.Watanabe, M.Shinohara, K.Okada, and D.N.Baker: "Possible plasma dynamics in nighttime magnetosphere associated with Pi 2 onset as observed form dip-equator." Proc.NIPR Symp.Upper Atmos.Phys.12. 162-166 (1998)
[Publications] Saka,O., T.Kitamura, H.Tachihara, M.Shinohara, N.B.Trivedi, G.D.Reeves, and T.L Hansen: "Amplitude modulation of equatorial electrojet(EEJ)during magnetospheric storm" J.Atmos.Solar Terr.Phys.60. 1,129-1,137 (1998)
[Publications] Aso,T., AA.Stoca, U.Bracadstroem, B.Guslavssoa, A.Urashima, and M.Ejiri: "ALIS, a state-of-the art optical observation network for the exploration of polar atmospheric processes" Adv.Space Res.in press.
[Publications] Steen.A., B.Guslavssoa, C.-F.Enell, and U.Bracadstroem, T.Aso, and M.Ejiri: "PSC dynamics investigated by multi-station imaging techniques, results and prospects" Proc.Mesoscale Workshop, Nov.in press. (1998)
[Publications] Aso,T., M.Ejiri, A.Urashima, H.Miyaoka, A.Steen, U.Bracadstroem, and B.Guslavssoa: "First results of auroral tomography from ALIS-Japan multi-station observations in March, 1995" Earth, Planets and Space. 50. 81-86 (1998)
[Publications] Aso,T., M.Ejiri, A.Urashima, H.Miyaoka, Steen.U.Bracadstroem, and B.Guslavssoa: "Auroral tomography analysis of a folded arc observed at the ALIS-Japan multi-station campaign on March 26, 1995" Proc.NIPR Symp.Upper Atmos.Phys.11. 1-10 (1998)
[Publications] Onda,K., M.Ejiri, Y.Itikawa, and H.Miyaoka: "Attitude profile of electron density and oxygen green line in active auroral arcs based on electron differential number Oux observed by souading rocker" Proc.NIPR Symp.Upper Atmos.Phys.11. 36-54 (1998)
[Publications] Ebihara,Y., M.Ejiri, and H.Miyaoka: "Enhancements of differential flux of energetic particles in the inner magnetosphere associated with a megnetic storm (extended abstract)" Proc.NIPR Symp.Upper Atmos.Phys.11. 150-153 (1998)
[Publications] Ejiri,M., S.Okano, M.Okada, M.Taguchi, and S.Takeshita: "All sky imager observation of aurora and airglow at South Pole : System design and the initial test results (extended abstract)" Proc.NIPR Symp.Upper Atmos.Phys.11. 159-162 (1998)
[Publications] Ebihara Y., M.Ejiri, and H.Miyaoka: "Coulomb lifetime of the ring current ions with time varying plasmashere" Earth, Planets and Space. 50. 371-382 (1998)
[Publications] Ebihara,Y. and M.Ejiri: "Modeling of solar wind control of the ring curren buildup:A case study of the magnetic storms in April 1997" Geophys.Res.Lett.25, 20. 3,751-3,754 (1998)
[Publications] Ebihara,Y., M.Ejiri, and H.Miyaoka: "Simulation on ring current formation:A case study of a storm on February 13, 1972" Proc.NIPR Symp.Upper Atmos.Phys.12. 1-11 (1998)
[Publications] Taguchi,M., M.Ejiri, S.Okano, T.D.Kawahara, M.Okada, and M.Nakamura: "Imaging observation of conjugate auroras from a lunar orbiter (extended abstract)" Proc.NIPR Symp.Upper Atmos.Phys.12. 175-176 (1998)
[Publications] Saka,O., O.Watanabe, M.Shinohara, H.Akaki, and D.N.Baker: "Possible plasma dynamics in nighttime magnetosphere during first one-minute-interval of the Pi 2 onset" Proc.Substorms-4. 559-561 (1998)

1998 Fiscal Year Annual Research Report

SuperDARNレーダーと地上共役点観測による極域電磁圏の南北対称性の研究

Principal Investigator

佐藤 夏雄 国立極地研究所, 情報科学センター, 教授 (50132709)

Research Products

[Publications] Sato,N., T.Nagaoka. K.Hashimoto, and T.Saemundsson: "Conjugacy of isolated auroral arcs and nonconjugate auroral breakups" J.Geophy.Res.103. 11,641-11,652 (1998)

[Publications] Sato,N., M.Morooka. K.Minatoya. and T.Saemundsson: "Nonconjugacy of pulsating auroral patches near L=6" Geophys.Res.,Lett.25. 3755-3758 (1998)

[Publications] Nose.M., T.Iyemori. M.Sugiura. J.A.Slavin. R.A.Hoffman. J.D.Winaingham. and N.Sato: "Electron precipilation accompanying Pc 5 pulsations observed by the DE satellites ans at a ground station" J.Geophys.Res.103. 17,587-17,604 (1998)

[Publications] Sato.N., M.Morooka. K.Minatoya. and T.Saemundsson: "Activities and forms of pulsating auroras at the conjugate-pair observatories nere L=6" Proc.NIPR Symp.Upper Atmos.Phys.11. 134-138 (1998)

[Publications] Hashimoto,K., and N.Sato: "Asymmetric auroral electrojet intensity at geomagnetic conjugate stations" Proc.NIPR Symp.Upper Atmos.Phys.12. 94-107 (1998)

[Publications] Ogawa,T., N.Nishitani. M.Pinnock. N.Sato. H.Yamagishi. and A.S.Yukimatu: "Polar Cap Patches and Auroral Blobs Observed with Antarctic HF Radar:Preliminary" Proc.NIPR Symp.Upper Atmos.Phys.11. 11-18 (1998)

[Publications] Ogawa,T., N.Nishitani. M.Pinnock. N.Sato. H.Yamagishi. and A.S.Yukimatu: "Antarctic HF Radar Observations of Irregularities Associated with Polar Patches and Auroral Blobs:A Case Study" J.Geophys.Res.103. 26,547-26,558 (1998)

[Publications] Fukumoto,M., N.Nishitani. T.Ogawa. N.Sato. H.Yamagishi. and A.S.Yukimatu: "Statistical analysis of echo power. Doppler velocity and spectral width obtained with the Syowa South HF radar" Advances in Polar Upper Atmosphere Research. in press.

[Publications] Fujita,Y., Yamagishi,H., and Sato,N.: "Seasonal variation of geomagnetic conjugate point lainude is auroral zume as observed with Syowa-Island conjugate pair of imaging nonmeters" Nankyoku Shiryo(Antarctic Record). 42, 1. 1-19 (1998)

[Publications] Nishino,M., H.Yamagishi, N.Sato, Y.Sanoo. R.Liu, H.Hu, and P.Stauning: "Initial results of imaging riometer observations at polar cap conjugate stations" Proc.NIPR Symp.Upper Atmos.Phys.12. 58-72 (1998)

[Publications] Watanabe,M., M.Pinnock,, A.S.Rodger, N.Sato, H.Yamagishi, A.S.Yukimatu. R.A.Greenwald, J.P.Villain, and M.R.Hairstoa: "Localized bursty flow in the nightside ionosphere-Implication for distant tail reconnection (extended abstract)" Proc.NIPR Symp.Upper Atmos., Phys.11. 143-149 (1998)

[Publications] Watanabe,M., M.Pinnock,, A.S.Rodger, N.Sato, H.Yamagishi, A.S.Yukimatu. R.A.Greenwald, J.P.Villain, and M.R.Hairstoa: "Localized activation of the distant tail neutral line just prior to substorm onsets" J.Geophys.Res.103. 17,651-17,669 (1998)

[Publications] Watanabe,M., M.Pinnock,, A.S.Rodger, N.Sato, H.Yamagishi, A.S.Yukimatu. R.A.Greenwald, J.P.Villain, and M.R.Hairstoa: "Fast equatorward separatrix motion in the nightside ionosphere just prior to substorm onset (extended abstract)" Proc.NIPR Symp.Upper Atmos., Phys.12. 148-155 (1999)

[Publications] Ejiri,M., T.Aso, M.Okada, M.Tsutsumi, M.Taguchi, N.Sato, and S.Okano: "Japanese research project on arctic and antarctic observations of the middle atmosphere" Adv.Space Res.in press.

[Publications] T.Kikuchi, M.Pinnock, A.S.Rodger, H.Luchr, T.Kitamura, H.Tachihara, M.Watanabe, N.Sato, and M.Ruobonierni: "Global evolution of a substorm-associated DP2 current system observed by SuperDARN and magnetometers" Advances in Space Research. in press.

[Publications] Yang.H., R.Liu, and N.Sato: "Study on pixel intensity correction in projection transform of all-sky auroral image" Proc.NIPR Symp.Upper Atmos.Phys.11. 55-60 (1998)

[Publications] Yamagishi,H., Y.Fujita, N.Sato, P.Stauning, M.Nishino, and K.Makita: "Conjugate features of aurorals observed by TV cameras and imaging riorneters at auroral zone and poiar cap conjugate-pair stations" Polar Cap Boundary Phenomena ed.by J.Moen et al.289-300 (1998)

[Publications] Watanabe,M., M.Pinnock,, A.S.Rodger, N.Sato, H.Yamagishi, A.S.Yukimatu. R.A.Greenwald, J.P.Villain, and M.R.Hairstoa: "Ionospheric signatures of distat tail reconnection observed just before substorm onsets" Proc.Substorms-4. 719-722 (1998)

[Publications] Ogawa,T.: "A Review of Radar and Satellite Beacon Observations of Atmospheric Gravity Waves at Syowa Station" Mem.Natl Inst.Polar Res., Spec.Issue. 52. 28-43 (1998)

[Publications] Buchert,S.C., A.P.van Eyken, T.Ogawa, and S.Watanabe: "Naturally Enhanced Ion-Acoustic Lines Seen with the ESR" Advances in Space Research. in press.

[Publications] M.Nishino, S.Nozawa, and J.A.Holtet: "Daytime ionospheric absorptions in the polar cap associated with poleward drifting F-region plasma patches" Earth, Planets and Space. 50, 2. 107-117 (1998)

[Publications] Nishino,M., N.Goroknov, Y.Tanaka, H.Yamagishi, and T.Hansen: "Probe experiment characterizing 30 MHz radio wave scatter in the high-latitudeionosphere" Radio Science. in press.

[Publications] Kadokura,A., M.Ejiri, and T.Oguti: "Ionospheric chauve of the substorm current murduc system doubled from the visible annural inappear abroad AKEBONO (Extended abstract)" Proc.NIPR Symp.Upper Atmos.Phys.11. 139-142 (1998)

[Publications] Lewis,R.V., M.P.Freeman, A.S.Rodger, M.Watanabe, and R.A.Greenwald: "The behaviour of the electric field within the substorm current wedge" J.Geophys.Res.103. 179-190 (1998)

[Publications] Watanabe,M., T.Iijima, M.Nakagawa, T.A.Potemra, L.J.Zanetti, S.-I.Ohtani, and T.Newell: "Field-aligned current systems in the magnetospheric ground state" J.Geophys.Res.103. 6,853-6,869 (1998)

[Publications] Okada,K., O.Saka, and O.Watanabe: "Correlation between Pi 2 at nightside geosynchronous orbit and auroral modulation" Proc.NIPR Symp.Upper Atmos.Phys.11. 131-136 (1998)

[Publications] Saka,O., H.Akaki, O.Watanabe, M.Shinohara, and D.N.Baker: "An initial response of magnetic fields at geosynchronous orbit to Pi 2 onset as observed from the dip-equator" Ann.Geophysicae. 16. 542-548 (1998)

[Publications] Saka,O., H.Akaki, O.Watanabe, M.Shinohara, K.Okada, and D.N.Baker: "Possible plasma dynamics in nighttime magnetosphere associated with Pi 2 onset as observed form dip-equator." Proc.NIPR Symp.Upper Atmos.Phys.12. 162-166 (1998)

[Publications] Saka,O., T.Kitamura, H.Tachihara, M.Shinohara, N.B.Trivedi, G.D.Reeves, and T.L Hansen: "Amplitude modulation of equatorial electrojet(EEJ)during magnetospheric storm" J.Atmos.Solar Terr.Phys.60. 1,129-1,137 (1998)

[Publications] Aso,T., AA.Stoca, U.Bracadstroem, B.Guslavssoa, A.Urashima, and M.Ejiri: "ALIS, a state-of-the art optical observation network for the exploration of polar atmospheric processes" Adv.Space Res.in press.

[Publications] Steen.A., B.Guslavssoa, C.-F.Enell, and U.Bracadstroem, T.Aso, and M.Ejiri: "PSC dynamics investigated by multi-station imaging techniques, results and prospects" Proc.Mesoscale Workshop, Nov.in press. (1998)

[Publications] Aso,T., M.Ejiri, A.Urashima, H.Miyaoka, A.Steen, U.Bracadstroem, and B.Guslavssoa: "First results of auroral tomography from ALIS-Japan multi-station observations in March, 1995" Earth, Planets and Space. 50. 81-86 (1998)

[Publications] Aso,T., M.Ejiri, A.Urashima, H.Miyaoka, Steen.U.Bracadstroem, and B.Guslavssoa: "Auroral tomography analysis of a folded arc observed at the ALIS-Japan multi-station campaign on March 26, 1995" Proc.NIPR Symp.Upper Atmos.Phys.11. 1-10 (1998)

[Publications] Onda,K., M.Ejiri, Y.Itikawa, and H.Miyaoka: "Attitude profile of electron density and oxygen green line in active auroral arcs based on electron differential number Oux observed by souading rocker" Proc.NIPR Symp.Upper Atmos.Phys.11. 36-54 (1998)

[Publications] Ebihara,Y., M.Ejiri, and H.Miyaoka: "Enhancements of differential flux of energetic particles in the inner magnetosphere associated with a megnetic storm (extended abstract)" Proc.NIPR Symp.Upper Atmos.Phys.11. 150-153 (1998)

[Publications] Ejiri,M., S.Okano, M.Okada, M.Taguchi, and S.Takeshita: "All sky imager observation of aurora and airglow at South Pole : System design and the initial test results (extended abstract)" Proc.NIPR Symp.Upper Atmos.Phys.11. 159-162 (1998)

[Publications] Ebihara Y., M.Ejiri, and H.Miyaoka: "Coulomb lifetime of the ring current ions with time varying plasmashere" Earth, Planets and Space. 50. 371-382 (1998)

[Publications] Ebihara,Y. and M.Ejiri: "Modeling of solar wind control of the ring curren buildup:A case study of the magnetic storms in April 1997" Geophys.Res.Lett.25, 20. 3,751-3,754 (1998)

[Publications] Ebihara,Y., M.Ejiri, and H.Miyaoka: "Simulation on ring current formation:A case study of a storm on February 13, 1972" Proc.NIPR Symp.Upper Atmos.Phys.12. 1-11 (1998)

[Publications] Taguchi,M., M.Ejiri, S.Okano, T.D.Kawahara, M.Okada, and M.Nakamura: "Imaging observation of conjugate auroras from a lunar orbiter (extended abstract)" Proc.NIPR Symp.Upper Atmos.Phys.12. 175-176 (1998)

[Publications] Saka,O., O.Watanabe, M.Shinohara, H.Akaki, and D.N.Baker: "Possible plasma dynamics in nighttime magnetosphere during first one-minute-interval of the Pi 2 onset" Proc.Substorms-4. 559-561 (1998)

佐藤夏雄国立極地研究所, 情報科学センター, 教授 (50132709)