Quasi‐periodic oscillations of the magnetopause during northward sheath magnetic field

S. Kokubun, H. Kawano, M. Nakamura, T. Yamamoto, K. Tsuruda, H. Hayakawa, A. Matsuoka, L. A. Frank

研究成果: ジャーナルへの寄稿学術誌査読

21 被引用数 (Scopus)


The Geotail satellite quasi‐periodically crossed the dawn flank of magnetopause more than ten times during an interval of 1.5 hours on November 4, 1992. Magnetopause crossings were characterized by quasi‐periodic pulses of a sawtooth wave form in the magnetic field and the plasma flow components tangential to the magnetopause. The magnetic field strength in the magnetosheath was larger than that in the magnetosphere. The direction of magnetic field outside the magnetopause current layer was northward with antisunward tilt, indicating the draping of magnetic field on the magnetopause. Boundary normals of wavy magnetopause systematically incline sunward on the upstream side, while they tend to incline antisunward with considerable deviation on the downstream side. Comparison with other multiple crossing events suggests that the November 4 event exhibits wavy structure of the dawn flank magnetopause associated with the northward interplanetary magnetic field.

ジャーナルGeophysical Research Letters
出版ステータス出版済み - 12月 15 1994

!!!All Science Journal Classification (ASJC) codes

  • 地球物理学
  • 地球惑星科学(全般)


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