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Studies on magnetospheric boundary processes based on magnetic field and aurora observation in the northern and southern polar caps

Research Project

Project/Area Number 12573007
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section海外学術
Research Field Space and upper atmospheric physics
Research InstitutionTohoku University

Principal Investigator

FUKUNISHI Hiroshi  Graduate School of Science, Professor, 大学院・理学研究科, 教授 (90099937)

Co-Investigator(Kenkyū-buntansha) SAKANOI Takeshi  Graduate School of Science, Research Associate, 大学院・理学研究科, 助手 (80271857)
TAKAHASHI Yukihiro  Graduate School of Science, Lecturer, 大学院・理学研究科, 講師 (50236329)
OKANO Shoichi  Graduate School of Science, Professor, 大学院・理学研究科, 教授 (10004483)
TAGUCHI Makoto  National Institute of Polar Research, Associate Professor, 助教授 (70236404)
YAMAGISHI Hisao  National Institute of Polar Research, Associate Professor, 助教授 (20132714)
Project Period (FY) 2000 – 2002
Project Status Completed (Fiscal Year 2002)
Budget Amount *help
¥14,700,000 (Direct Cost: ¥14,700,000)
Fiscal Year 2002: ¥5,300,000 (Direct Cost: ¥5,300,000)
Fiscal Year 2001: ¥4,300,000 (Direct Cost: ¥4,300,000)
Fiscal Year 2000: ¥5,100,000 (Direct Cost: ¥5,100,000)
KeywordsAGO / magnetospheric boundary / magnetic field / magetic pulsation / impuls / MIE / Solar wind / discontinuity / Magnetic Impulse Event / Treveling Convection Vortex / プロトンオーロラ / 沿磁力線電流 / カスプ / 太陽風不連続 / 昼側磁気圏 / 磁力計ネットワーク / 極冠域 / オーロラ / 南極無人観測所 / プロトンホロラ / 磁気インパルス現象
Research Abstract

In order to clarify the interaction between the solar wind and the magnetosphere of the Earth, magnetospheric boundary processes were investigated, making use of 6 non-manned automatic geophysical observatories (AGO) located in the interior of the Antarctic Continent. Comprehensive analysis was carried out, combining data recorded by AGO equipments, such as magnetometers, aurora imagers, riometers and VLF receivers, and solar wind and solar activity data obtained by spacecrafts as well as HF radar data at Syowa station. Results including some important and new findings are as follows:
1) Conjugate TCV (traveling convection vortices) events moving sunward in both hemispheres were found and its physical mechanisms were investigated in detail.
2) Transient ionospheric disturbances relating to the TCV were found. It is shown that the disturbances are consequence of non-linear processes in F-region caused by 3-D current system and auroral particle precipitations.
3) Automatic detection algorithms for MIE (magnetic impulse event) and for TD (tangential discontinuity) were developed successfully.Using these algorithms,it was found that occurences of MIE and TD show correlation in seasonal variation.
4) A tecchnique to calculate the TD arrival time using data obtained by one spacecraft was developed.
5) Quantitative model for TCV phenomena considering conjugate condition in the magnetosphere-ionosphere coupling processes was constructed.
6) 3-D MHD simulation was conducted to understand the current generation mechanisms associated with TCV. The results succeeded in reproducing typical TCV phenomena.

Report

(4 results)
  • 2002 Annual Research Report   Final Research Report Summary
  • 2001 Annual Research Report
  • 2000 Annual Research Report
  • Research Products

    (27 results)

All Other

All Publications (27 results)

  • [Publications] Shiokawa, K., W.Baumjohann, G.Haerendel, H.Fukunishi: "High-and low-latitude observations of adiabatic parameters associated with auroral electron acceleration"J. Geophys. Res. 105・A2. 2541-2550 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] N.Yoshida, S.Watanabe, H.Fukunishi, T.Sakanoi 他7名: "Coordinated Akebono and EISCAT observations of suprathermal ion outflows in the nightside inverted-V region"J. Atmos. Solar-Terr. Phys.. 62. 449-465 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Y.Takahashi, H.Fukunishi: "The dynamics of theproton aurora in auroral breakup events"J. Geophys. Res.. 106・A1. 451-463 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Fukunishi, H., R.Kataoka, 他3名: "Diagnosis of Magnetospheric Boundary Processes Using MIE-related Pc 1 Wave"EOS Trans.. F1025 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Kataoaka, R., H.Fukunishi, 他8名: "Magnetic Impulse Events: A multi event study of extended ground and space observations"EOS Trans.. F1003 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Kataoka, R.: "Magnetic Impulse Event: A detailed case study of extended ground and space observations"J. Geophys. Res.. 106・A11. 25873-25889 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Kataoka, R.: "Model calculation of global magnetic disturbances due to magnetic impulse events"EOS Trans.. 82・47. F1057 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Kataoka, R., H.Fukunishi, K.Hosokawa, H.Fujiwara, A.S.Yukimatu, N.Sato, Y.K.: "Transient production of F region irregularities associated with TCV passage"Ann. Geophys.. (in press). (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Kataoka, R., H.Fukunishi, L.J.Lanzerotti, T.J.Rosenberg, et al.: "Traveling convection vortices induced by solar wind tangential discontinuities"J. Geophys. Res.. 107・A12. 1455 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Shiokawa, K., W. Baumjohann, G. Haerendel, and H. Fukunishi: "High and low-latitude observations of adiabtic parameters associated witch auroral electron acceleration"J. Geophys. Bes. 105, A 12. 245l-255O (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Yoshida, N., S. Watanabe, H. Fukunishi, T. Sakanoi et al.: "Coordinated Akebono and EISCAT observations of suprathermal ion outflows in the nightside inverted-V region"J. Atmos. Solar-Tcerr. Phys.. 62. 449-465 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Takahashi, Y. and H.Fukunishi: "The dynamics of theproton aurora in auroral breakup events"J. Geophys. Res.. 106, A1. 451-463 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Fukunishi,H., R.Kataoka, et al.: "Diagnosis of Magnetospheric Boundary Processes Using MIE-related Pc 1 Wave"EOS Trans.. F1025 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Kataoka, R., H. Fukunishi,et al.: "Magnetic Impulse Events: A multi event study of extended ground and space observations"EOS Trans.. F1003 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Kataoka, R.: "Magnetic Impulse Event: A deltailed case stucJy of extended ground and space observation"J. Geophys. Res.. 106. A11. 25873-25889 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Kataoka, R.: "Model calculation of global magnetic disturbances due to magnetic impulse events"EOS Trans.. 82, 47. F1057 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Kataoka. R., H.Fukunishi, K. Hosokawa, H. Fujiwara, A.S. Yukimatu, N. Sato, and Y.K. Tung: "Transient production of F-region irregularities associated with TCV passage"Ann. Geojchys.. in press. (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Kataoka. R., H. Fukunishi, L. J. Lanzerotti, T. J. Rosenberg, et al.: "Traveling convection vortjeces induced by solar wind tangential discontinuities"J. Geophys. Res.. 107, A12. 1455 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Kataoka, R., H.Fukunishi, K.Hosokawa, H.Fujiwara, A.S.Yukimatu, N.Sato, Y.K.Tung: "Transient production of F region irregularities associated with TCV passage"Ann.Geophys.. (in press). (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] Kataoka, R., H.Fukunishi, L.J.Lanzerotti, T.J.Rosenberg, et al.: "Traveling convection vortices induced by solar wind tangential discontinuities"J.Geophys.Res.. 107・A12. 1455 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Ryuho Kataoka: "Magnetic Impulse Event : A detailed case study of extended ground and space observations"Journal of Geophysical Research. 106・A11. 25873-25889 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Ryuho Kataoka: "Model calculation of global magnetic disturbances due to magnetic impulse events"EOS Transaction, American Geophysical Union. 82・47. F1057-F1057 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Shiokawa,K.,W.Baumjohann,G.Haerendel,H.Fukunishi,: "High-and low-latitude observations of adiabatic parameters associated with auroral electron acceleration"Journal of Geophysical Research. 105・A2. 2541-2550 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] N.Yoshida,S.Watanabe,H.Fukunishi,T.Sakanoi 他7名: "Coordinated Akebono and EISCAT observations of suprathermalion outflows in the nightside inverted-V region"Journal of Atmospheric and Solar-Terrestrial Physics. 62. 449-465 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Y.Takahashi and H.Fukunishi: "The dynamics of the proton aurora in auroral breakup events"Journal of Geophysical Research. 106・A1. 45-63 (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] H.Fukunishi,R.Kataoka, 他3名: "Diagnosis of Magnetospheric Boundary Processes Using MIE-related Pc I Waves"EOS Trans.. F1025 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Kataoka,R.,H.Fukunshi, 他8名: "Magnetic Impulse Events : A multi event study of extended ground and space observations"EOS Trans.. F1003 (2000)

    • Related Report
      2000 Annual Research Report

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Published: 2000-04-01   Modified: 2016-04-21  

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