Plasmapause Disturbances Synchronized with Magnetospheric Disturbances

この論文にアクセスする

この論文をさがす

著者

    • MORIOKA Akira
    • Upper Atmosphere and Space Research Laboratory, Tohoku University
    • OYA Hiroshi
    • Department of Astronomy and Geophysics, Tohoku University

抄録

Quasi pulsive depleting plasma density variations with period ranging from a few to a few tens sec with depletion up to 30 to 50% of the ambient non-depleted plasmapause density have been observed in the occasion of the plasmapause crossing by the Akebono (EXOS-D) satellite, in association with the enhancements of the local upper hybrid mode plasma waves. The phenomena are strictly related to the magnetospheric substorm phenomena with enhancements of normal kilometric radiations (AKR) which are emitted from the auroral region. These evidences are concluded to be caused by quasi-pulsive energy injections into the plasmapause region from the plasma sheet, possibly in the form of fast plasma streams, relating to substorms and magnetospheric disturbances. As for the origin of the simultaneous energy injection into the auroral and sub-auroral regions, the induced electric field by the disruption and/or the rapid change of the current sheet in the inner plasma sheet are discussed. The induced electric field should enhance the fast plasma injection from the inner magnetosphere to the plasmapause region due to the <I>E</I> x <I>B</I> drift, and also the field should be transported down to the amoral region along magnetic fields making a concentrated particle acceleration region which cause the enhancement of AKR.

収録刊行物

  • Journal of geomagnetism and geoelectricity  

    Journal of geomagnetism and geoelectricity 48(3), 309-318, 1996-03 

    Society of Geomagnetism and Earth, Planetary and Space Sciences

参考文献:  23件

参考文献を見るにはログインが必要です。ユーザIDをお持ちでない方は新規登録してください。

各種コード

  • NII論文ID(NAID)
    10002028751
  • NII書誌ID(NCID)
    AA00698879
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    00221392
  • データ提供元
    CJP書誌  J-STAGE 
ページトップへ