2002 Fiscal Year Annual Research Report

国際SuperDARNレーダー網による極域電磁圏擾乱の南北半球比較研究

Research Project

Project/Area Number	11304029
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)	小川忠彦名古屋大学, 太陽地球環境研究所, 教授 (60271607) 飯島健九州大学, 大学院・理学研究科, 名誉教授 (70011624) 山岸久雄国立極地研究所, 研究系, 教授 (20132714) 西谷望名古屋大学, 太陽地球環境研究所, 助手 (10218159) 福西浩東北大学, 大学院・理学研究科, 教授 (90099937)
Keywords	SuperDARNレーダー / HFレーダー / 極域電磁圏擾乱 / オーロラ / プラズマ対流 / 太陽風 / 地磁気脈動 / 地磁気共役点
Research Abstract	本研究課題は、南北両極域の広範囲を高時間分解能で観測している国際SuperDARNレーダー網の特徴・利点を最大限に生かし、両半球の極域電磁圏で生起している電磁現象のマクロ的・ミクロ的特性を明確にし、太陽風と地球磁気圏との相互作用の物理的プロセスを総合的に解き明かすことを最終目的としている。今年度に実施した具体的な研究課題と成果としては、1)太陽風動圧が非常に高い場合と低い場合の電離圏対流ダイナミクスの相違、2)惑星間磁場Bzの階段的南転に対する電離圏応答、3)SuperDARNとGEOTAIL衛星、及び、EIACATヒータ実験を合わせた特別同時観測を企画・実施による、Pc3-4とPc5地磁気脈動の発生・伝播機構の特性の観測、4)レーダーエコースペクトル特性の南北半球比較の統計的、及び、ケーススタデーとしての解析研究、5)可視オーロラとHFレーダーとの同時比較観測の企画・運用、6)移動性電流渦現象の発生機構に関するHFレーダーと地上磁場変動記録を用いたモデル計算、7)極域夏季中間圏エコー(PMSE)の南極域HFレーダーで初めての観測、8)HFレーダーの生時系列データを用いての流星エコー観測への応用と開発、などSuperDARNレーダーを基盤観測手法として、多方面の研究分野を手がけ、その結果多くの観測・研究成果を上げることができた。これらの研究成果を発表するために、アラスカで開催された国際SuperDARNワークショップに7名の研究協力者が参加したのをはじめ、多くの国内外の学会・シンプジウム成果発表を行なった。また、国際誌にも投稿・発表した。

Research Products

(18 results)

All Other

All Publications (18 results)

[Publications] Ogawa, T., et al.: "Upper mesosphere echoes with the Antarctic Syowa HF radar"Geophys.Res., Lett.. 29,7. 61-1-61-4 (2002)
[Publications] Matsuoka, H., et al.: "Coordinated observations of Pc 3 pulsations near cusp latitudes"Journal of Geophysical Research. 107(A11). SMP33-1-SMP33-14 (2002)
[Publications] Milan, S.E., et al.: "The spectral characteristics of E region radar echoes colocated with and adjecent to visual auroral arcs"Ann.Geophys. 20. 795-805 (2002)
[Publications] Nishitani, N., et al.: "A study of the dusk convection cell's response to an IMF southward turning"J.Geophys.Res.. 107(A3). SMP3-1-SMP3-15 (2002)
[Publications] Makarevitch, R.A., et al.: "Comparison of flow angle variations of E-region echo characteristics at VHF and HF"Adv.Polar Upper Atmos.Res.. 16. 59-83 (2002)
[Publications] Ogawa, T., et al.: "E region echoes observed with the Syowa HF radar under disturbed geomagnetic condition"Adv.Polar Upper Atmos.Res.. 16. 84-98 (2002)
[Publications] Kadokura, A., et al.: "Polar Patrol Balloon Experiment in Antarctica during 2002-2003"Adv.Polar Upper Atmos.Res.. 16. 157-172 (2002)
[Publications] Yukimatu, A.S., et al.: "A new method for monitoring and removing SuperDARN radar DC offsets"Adv.Polar Upper Atmos.Res.. 16. 181-192 (2002)
[Publications] Sato, N., et al.: "Direct comparison of pulsating aurora observed simultaneously by the FAST satellite and from the ground at Syowa"Geophys.Res., Lett.. 29(21). 37-1-37-4 (2002)
[Publications] Hongqiao, H., et al.: "The extremely intense CAN events observed at Zhongshan Station in July, 2000"Chinese Journal of Polar Science. 13・1. 7-14 (2002)
[Publications] Vontrat-Reberac, A., et al.: "Noon ionospheric signatures of a sudden commencement following a solar wind pressure pulse"Ann.Geophys.. (in press). (2003)
[Publications] Hosokawa, K., et al.: "Statistical Characteristics of Spectral Width as Observed by the Conjugate superDARN Radars"Ann.Geophys.. (in press). (2003)
[Publications] Woodfield, E.B., et al.: "An inter-hemispheric, statistical study of nightside spectral width distributions from coherent HF scatter radars"Ann.Geophys.. (in press). (2003)
[Publications] Milan, S.E., et al.: "Multi-frequency observations of E region HF radar aurora"Ann.Geophys.. (in press). (2003)
[Publications] Nishitani, N., et al.: "Inteheispheric asymmetry of the high latitude ionospheric convection on May 11-12, 1999"J.Geophys.Res.. (in press). (2002)
[Publications] Sakanoi, T., et al.: "Dynamical coupling of neutrals and ions in the hight-latitude F-region : Simultaneous FPI and HF radar observation at Syowa station, Antarctica"J.Geophys.Res.. 107(A11). SIA13-1-SIA13-14 (2002)
[Publications] Milan, S.E., et al.: "E region echo characteristics governed by auroral arc electrodynamics"Ann.Geophys.. (in press). (2003)
[Publications] Kataoka, R., et al.: "Transient production of F region irregularities associated with TCV passage"Ann.Geophys.. (in press). (2003)

2002 Fiscal Year Annual Research Report

国際SuperDARNレーダー網による極域電磁圏擾乱の南北半球比較研究

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] Ogawa, T., et al.: "Upper mesosphere echoes with the Antarctic Syowa HF radar"Geophys.Res., Lett.. 29,7. 61-1-61-4 (2002)

[Publications] Matsuoka, H., et al.: "Coordinated observations of Pc 3 pulsations near cusp latitudes"Journal of Geophysical Research. 107(A11). SMP33-1-SMP33-14 (2002)

[Publications] Milan, S.E., et al.: "The spectral characteristics of E region radar echoes colocated with and adjecent to visual auroral arcs"Ann.Geophys. 20. 795-805 (2002)

[Publications] Nishitani, N., et al.: "A study of the dusk convection cell's response to an IMF southward turning"J.Geophys.Res.. 107(A3). SMP3-1-SMP3-15 (2002)

[Publications] Makarevitch, R.A., et al.: "Comparison of flow angle variations of E-region echo characteristics at VHF and HF"Adv.Polar Upper Atmos.Res.. 16. 59-83 (2002)

[Publications] Ogawa, T., et al.: "E region echoes observed with the Syowa HF radar under disturbed geomagnetic condition"Adv.Polar Upper Atmos.Res.. 16. 84-98 (2002)

[Publications] Kadokura, A., et al.: "Polar Patrol Balloon Experiment in Antarctica during 2002-2003"Adv.Polar Upper Atmos.Res.. 16. 157-172 (2002)

[Publications] Yukimatu, A.S., et al.: "A new method for monitoring and removing SuperDARN radar DC offsets"Adv.Polar Upper Atmos.Res.. 16. 181-192 (2002)

[Publications] Sato, N., et al.: "Direct comparison of pulsating aurora observed simultaneously by the FAST satellite and from the ground at Syowa"Geophys.Res., Lett.. 29(21). 37-1-37-4 (2002)

[Publications] Hongqiao, H., et al.: "The extremely intense CAN events observed at Zhongshan Station in July, 2000"Chinese Journal of Polar Science. 13・1. 7-14 (2002)

[Publications] Vontrat-Reberac, A., et al.: "Noon ionospheric signatures of a sudden commencement following a solar wind pressure pulse"Ann.Geophys.. (in press). (2003)

[Publications] Hosokawa, K., et al.: "Statistical Characteristics of Spectral Width as Observed by the Conjugate superDARN Radars"Ann.Geophys.. (in press). (2003)

[Publications] Woodfield, E.B., et al.: "An inter-hemispheric, statistical study of nightside spectral width distributions from coherent HF scatter radars"Ann.Geophys.. (in press). (2003)

[Publications] Milan, S.E., et al.: "Multi-frequency observations of E region HF radar aurora"Ann.Geophys.. (in press). (2003)

[Publications] Nishitani, N., et al.: "Inteheispheric asymmetry of the high latitude ionospheric convection on May 11-12, 1999"J.Geophys.Res.. (in press). (2002)

[Publications] Sakanoi, T., et al.: "Dynamical coupling of neutrals and ions in the hight-latitude F-region : Simultaneous FPI and HF radar observation at Syowa station, Antarctica"J.Geophys.Res.. 107(A11). SIA13-1-SIA13-14 (2002)

[Publications] Milan, S.E., et al.: "E region echo characteristics governed by auroral arc electrodynamics"Ann.Geophys.. (in press). (2003)

[Publications] Kataoka, R., et al.: "Transient production of F region irregularities associated with TCV passage"Ann.Geophys.. (in press). (2003)

佐藤夏雄国立極地研究所, 情報科学センター, 教授 (50132709)