1999 Fiscal Year Annual Research Report

国際Super DARN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 Category	Grant-in-Aid for Scientific Research (A)
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, 教授 (70011624) 山岸久雄国立極地研究所, 研究系, 教授 (20132714) 渡辺正和日本学術振興会, 特別研究員福西宏東北大学, 大学院・理学研究科, 教授 (90099937)
Keywords	Super DARN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Super DARN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。今年度に得られた具体的な研究成果として、1)地磁気共役点領域を観測するHFレーダーと光学オーロラの同時観測データを用いて、夜側電離圏で観測される太陽方向プラズマ高速流の成因について考察した。その結果、電離圏は惑星間磁場の南北成分に対して汎地球的に応答しており、高速流はその応答の一結果であることが判明した。2)太陽風、Super DARN、さらに赤道帯を取り巻いて観測された地磁気データを比較することにより、太陽風磁場の南向き状態が地球を掠め過ぎる短時間(15分)の間に、高緯度夕方側での突発的なプラズマ対流の発達と赤道でのCounter Electrojetの駆動を伴う全球的応答が観測された。3)昭和基地Super DARNで得られた長期のデータを統計解析し、レーダーエコーの原因となる電離圏プラズマ不安定の機構を調べた。4)北極Super DARNとEISCATスヴァールバルレーダーとの同時観測データを解析することにより、Super DARNで検出されたポーラーパッチの新しい生成過程を明らかにした。5)Super DARNで観測されたPc3脈動と衛星データとを比較し、その発生・伝搬機構に関して、特にカスプ域で発生頻度が高い原因などの新たな観測事実が得られた。6)10分程度で準周期的に変動する可視オーロラとHFレーダーとの比較観測から、オーロラ粒子の降下機構に関する新たな知見が得られた。

Research Products

(29 results)

All Other

All Publications (29 results)

[Publications] Sato, N., T. Nagato, and Th. Saemundsson: "Extremely periodic pulsating aurora observed near L=6 : A new type pulsting aurora"Adv. Polar Upper Atmos. Res.. 13. 57-66 (1999)
[Publications] Sato, N., Y. Yamagishi, A. S. Yukimatu, M. Kikuchi, K. Makita, H. Yang, and R. Liu: "Simultaneous observation of Syowa East HF radar and Zhongshan optical aurora associated with the solar wind"Chinese Journal of Polar Science. (in press).
[Publications] Ebihara Y., and M. Ejiri: "Quantitative ring current model : Overview and comparison with observations"Adv. Polar Upper Atoms. Res. 12. 1-36 (1999)
[Publications] Ebihara Y., S. Barabash and M. Ejiri: "On the global production rates of energetic neutral atoms (ENAs) and their association with the Dst index"Geophys. Res. Lett.. 26・19. 2929-2932 (1999)
[Publications] Braendstroem, B. U. E., T. B. Leyser, A. A. Steen, M. T. Rietveld, B. Gustavsson, T. Aso, and M. Ejiri: "Unambiguous evidnce of HF pump-enhanced airglow at auroral latitudes"Geophys. Res. Lett.. 26・23. 3561-3564 (1999)
[Publications] Lessard, M. R., M. K. Hudson, B. J. Anderson, R. L. Amoldy, H. Luhr, G. D. Reeves, N. Sato, and A. T. Weatherwax: "Evidence for a global disturbance with monochromatic pulsations and energetic electron bouncing"J. Geophys. Res.. 104, A4. 7011-7023 (1999)
[Publications] Yeoman, T. K., R. V. Lewis, S. E. Milan, and M. Watanabe: "An interhemispheric study of the ground magnetic and ionospheric electric fields during the substorm growth phase and expansion phase onset"J. Geophys. Res.. 104, A7. 14867-14877 (1999)
[Publications] Nishitani, N., T. Ogawa, M. Pinnock, M. Freeman, J. Dudeney, J. P. Villan, K. Baker, N. Sato, H. Yamagishi, and H. Matsumoto: "A very largescale flow bursts observed by the Super DARN radars"J. Geophys. Res.. 104, A10. 22469-22486 (1999)
[Publications] Onda K., M. Ejiri, and Y. Itikawa: "Analysis of electron auroras based on the Monte Carlo method : Application to active electron arc auroras observed by the sounding rocket at Syowa Station"J. Geophys. Res.. 104・A12. 27991-28001 (1999)
[Publications] Buchert, S. C., A. P. van Eyken, T. Ogawa, and S. Watanabe: "Naturally Enhanced Ion-Acoustic Lines Seen With the EISCAT Svalbard Radar"Adv. Space Res.. 23・10. 1699-1704 (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.. 24・12. 1689-1692 (1999)
[Publications] Ejiri, M.: "All-sky Imager at South Pole AO-117-O, 1999-2000 USAP Science Planning Summary"Antarctic Support Associates. 38-39 (1999)
[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"Adv. Polar Upper Atmos. Res.. 13. 37-47 (1999)
[Publications] Urashima, A., T. Aso, M. Ejiri, A. A. Steen, U. Braendstroem, and B. Gustavsson: "Camera calibration by an integration sphere for the auroral tomography observation"Adv. Polar Upper Atmos. Res.. 13. 79-78 (1999)
[Publications] Nishino M., N. Nishitani, N. Sato, H. Yamagishi, M. Lester, and J. A. Holtet: "A rectified response of daytime radio wave absorption to southward and northward excurtions during northward interplanetary magnetic field : A case study"Adv. Polar Upper Atmos. Res.. 13. 139-153 (1999)
[Publications] Makita, K., and N. J. Schuch: "Geomagnetic hole"Bulettin of Science and Engineering, Takushoku Univ.. 7・2. 59-66 (1999)
[Publications] 巻田和男、星野光男、立原祐司、西野正徳、湯元清文: "ブラジル・トリニダード地磁気共役観測"拓殖大学理工学研究報告. 7・3. 47-53 (2000)
[Publications] Aso, T., A. A. Steen, U. Braendstroem, B. Gustavsson, 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] Kikuchi, T., M. Pinnock, A. Rodget, H. Luehr, T. Kitamura, H. Tachihara, M. Watanabe, N. Sato, and M. Ruochoniemi: "Global evolution of a substorm-associated DP2 current system observed by Super DARN and magnetometers"Adv. Space Res.. (in press).
[Publications] Watanabe, M.: "Constitution of dayside field-aligned current systems"International Journal of Geomagnetism and Aeronomy. (in press).
[Publications] Yang, H., N. Sato, K. Makita, M. Kikuchi, A. Kadokura, M. Ayukawa, H. Q. Hu, R. Y. Liu, and I. h*gstr*: "Synoptic auroral display along the postnoon auroral oval : A surbey with all-sky TV observation at Zhongshan, Antarctica"Atmos. Terr. Phys. (in press).
[Publications] Ejiri, M., M. Okada and S. Okano: "Auroral dynamics observed by the all sky imager at South Pole Station"Antarctic Journal of the United States. (in press).
[Publications] Ayukawa, M., K. Makita, N. Sato, M. Kikuchi, H. Yang, R. Liu, and H. Hu: "Aurora morhpology in the dayside"Chinese Journal of Polar Science. (in press).
[Publications] Fukumoto, M., Nishitani, M., T. Ogawa, N. Sato, H. Yamagishi, and A. S. Yukimatu: "Statistical study of doppler velocity and echo power around 75° magnetic latitude obtaned with the Syowa East HF radr in 1997"Adv. Polar Upper Atmos. Res.. (in press).
[Publications] Hedin, M., I. Haeggstroem, A. Pellinen-Wannberg, L. Andersson, U. Braendstroem, B. Gustavsson, A. A. Steen, A. Westman, G. Wannberg, T. van Evken, T. Aso, C. Cattell, C. W. Carlosn, D. Khumoar: "3-D extent of the main ioospheric trough - a case study"Adv. Polar Upper Atmos. Res.. (in press).
[Publications] Hosokawa, K., A. S. Yukimatu, and T. Iyemori, and N. Sato: "Characteristics of Solar Effect (SFE) in the High-latitude F region ionosphere as oberved by the Super DARN"Adv. Polar Upper Atmos. Res.. (in press).
[Publications] Murata, Y., N. Sato, H. Yamagishi, A. S. Yukimatu, M. Kikuchi, K. Makita, T. Ogawa, H. Yang, R. Liu, and A. D,: "Simultaneous quasi-periodic optical and HF radar signatures observed in the postnoon sector"Adv. Polar Upper Atmos. Res.. (in press).
[Publications] Yamagishi, H., Y. Fujita, N. Sato, M. Nishino, P. Stauning, R. Liu, and Th, Saemundsson: "Interhemispheric conjugacy of auroral poleward expansion observed by conjugated imagint riometers at 〜67° and 〜77° invariant latitude"Adv. Polar Upper Atmos. Res.. (in press).
[Publications] Saka, O., T. Kitamura, H. Tachihara, M. Shinohara, N. B. Trivedi, N. Sato, J. M. Ruohoniemi, and R. A. Greenwald: "Simultaneous convection transientsin auroral zone and in equator as observed with Super DARN and equatorial matnetometers : a correlation with Equatorial counter Electrojet (CEJ) event"Adv. Polar Upper Atmos. Res.. (in press).

1999 Fiscal Year Annual Research Report

国際Super DARN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] Sato, N., T. Nagato, and Th. Saemundsson: "Extremely periodic pulsating aurora observed near L=6 : A new type pulsting aurora"Adv. Polar Upper Atmos. Res.. 13. 57-66 (1999)

[Publications] Sato, N., Y. Yamagishi, A. S. Yukimatu, M. Kikuchi, K. Makita, H. Yang, and R. Liu: "Simultaneous observation of Syowa East HF radar and Zhongshan optical aurora associated with the solar wind"Chinese Journal of Polar Science. (in press).

[Publications] Ebihara Y., and M. Ejiri: "Quantitative ring current model : Overview and comparison with observations"Adv. Polar Upper Atoms. Res. 12. 1-36 (1999)

[Publications] Ebihara Y., S. Barabash and M. Ejiri: "On the global production rates of energetic neutral atoms (ENAs) and their association with the Dst index"Geophys. Res. Lett.. 26・19. 2929-2932 (1999)

[Publications] Braendstroem, B. U. E., T. B. Leyser, A. A. Steen, M. T. Rietveld, B. Gustavsson, T. Aso, and M. Ejiri: "Unambiguous evidnce of HF pump-enhanced airglow at auroral latitudes"Geophys. Res. Lett.. 26・23. 3561-3564 (1999)

[Publications] Lessard, M. R., M. K. Hudson, B. J. Anderson, R. L. Amoldy, H. Luhr, G. D. Reeves, N. Sato, and A. T. Weatherwax: "Evidence for a global disturbance with monochromatic pulsations and energetic electron bouncing"J. Geophys. Res.. 104, A4. 7011-7023 (1999)

[Publications] Yeoman, T. K., R. V. Lewis, S. E. Milan, and M. Watanabe: "An interhemispheric study of the ground magnetic and ionospheric electric fields during the substorm growth phase and expansion phase onset"J. Geophys. Res.. 104, A7. 14867-14877 (1999)

[Publications] Nishitani, N., T. Ogawa, M. Pinnock, M. Freeman, J. Dudeney, J. P. Villan, K. Baker, N. Sato, H. Yamagishi, and H. Matsumoto: "A very largescale flow bursts observed by the Super DARN radars"J. Geophys. Res.. 104, A10. 22469-22486 (1999)

[Publications] Onda K., M. Ejiri, and Y. Itikawa: "Analysis of electron auroras based on the Monte Carlo method : Application to active electron arc auroras observed by the sounding rocket at Syowa Station"J. Geophys. Res.. 104・A12. 27991-28001 (1999)

[Publications] Buchert, S. C., A. P. van Eyken, T. Ogawa, and S. Watanabe: "Naturally Enhanced Ion-Acoustic Lines Seen With the EISCAT Svalbard Radar"Adv. Space Res.. 23・10. 1699-1704 (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.. 24・12. 1689-1692 (1999)

[Publications] Ejiri, M.: "All-sky Imager at South Pole AO-117-O, 1999-2000 USAP Science Planning Summary"Antarctic Support Associates. 38-39 (1999)

[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"Adv. Polar Upper Atmos. Res.. 13. 37-47 (1999)

[Publications] Urashima, A., T. Aso, M. Ejiri, A. A. Steen, U. Braendstroem, and B. Gustavsson: "Camera calibration by an integration sphere for the auroral tomography observation"Adv. Polar Upper Atmos. Res.. 13. 79-78 (1999)

[Publications] Nishino M., N. Nishitani, N. Sato, H. Yamagishi, M. Lester, and J. A. Holtet: "A rectified response of daytime radio wave absorption to southward and northward excurtions during northward interplanetary magnetic field : A case study"Adv. Polar Upper Atmos. Res.. 13. 139-153 (1999)

[Publications] Makita, K., and N. J. Schuch: "Geomagnetic hole"Bulettin of Science and Engineering, Takushoku Univ.. 7・2. 59-66 (1999)

[Publications] 巻田和男、星野光男、立原祐司、西野正徳、湯元清文: "ブラジル・トリニダード地磁気共役観測"拓殖大学理工学研究報告. 7・3. 47-53 (2000)

[Publications] Aso, T., A. A. Steen, U. Braendstroem, B. Gustavsson, 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] Kikuchi, T., M. Pinnock, A. Rodget, H. Luehr, T. Kitamura, H. Tachihara, M. Watanabe, N. Sato, and M. Ruochoniemi: "Global evolution of a substorm-associated DP2 current system observed by Super DARN and magnetometers"Adv. Space Res.. (in press).

[Publications] Watanabe, M.: "Constitution of dayside field-aligned current systems"International Journal of Geomagnetism and Aeronomy. (in press).

[Publications] Yang, H., N. Sato, K. Makita, M. Kikuchi, A. Kadokura, M. Ayukawa, H. Q. Hu, R. Y. Liu, and I. h*gstr*: "Synoptic auroral display along the postnoon auroral oval : A surbey with all-sky TV observation at Zhongshan, Antarctica"Atmos. Terr. Phys. (in press).

[Publications] Ejiri, M., M. Okada and S. Okano: "Auroral dynamics observed by the all sky imager at South Pole Station"Antarctic Journal of the United States. (in press).

[Publications] Ayukawa, M., K. Makita, N. Sato, M. Kikuchi, H. Yang, R. Liu, and H. Hu: "Aurora morhpology in the dayside"Chinese Journal of Polar Science. (in press).

[Publications] Fukumoto, M., Nishitani, M., T. Ogawa, N. Sato, H. Yamagishi, and A. S. Yukimatu: "Statistical study of doppler velocity and echo power around 75° magnetic latitude obtaned with the Syowa East HF radr in 1997"Adv. Polar Upper Atmos. Res.. (in press).

[Publications] Hosokawa, K., A. S. Yukimatu, and T. Iyemori, and N. Sato: "Characteristics of Solar Effect (SFE) in the High-latitude F region ionosphere as oberved by the Super DARN"Adv. Polar Upper Atmos. Res.. (in press).

[Publications] Murata, Y., N. Sato, H. Yamagishi, A. S. Yukimatu, M. Kikuchi, K. Makita, T. Ogawa, H. Yang, R. Liu, and A. D,: "Simultaneous quasi-periodic optical and HF radar signatures observed in the postnoon sector"Adv. Polar Upper Atmos. Res.. (in press).

[Publications] Yamagishi, H., Y. Fujita, N. Sato, M. Nishino, P. Stauning, R. Liu, and Th, Saemundsson: "Interhemispheric conjugacy of auroral poleward expansion observed by conjugated imagint riometers at 〜67° and 〜77° invariant latitude"Adv. Polar Upper Atmos. Res.. (in press).

佐藤夏雄国立極地研究所, 情報科学センター, 教授 (50132709)

[Publications] Yang, H., N. Sato, K. Makita, M. Kikuchi, A. Kadokura, M. Ayukawa, H. Q. Hu, R. Y. Liu, and I. hgstr: "Synoptic auroral display along the postnoon auroral oval : A surbey with all-sky TV observation at Zhongshan, Antarctica"Atmos. Terr. Phys. (in press).