2013年3月19日
Quick Response of the Near-Earth Magnetotail to Changes in the Interplanetary Magnetic Field
The Inner Magnetosphere: Physics and Modeling
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- 開始ページ
- 47
- 終了ページ
- 53
- 記述言語
- 英語
- 掲載種別
- 論文集(書籍)内論文
- DOI
- 10.1029/155GM06
- 出版者・発行元
- American Geophysical Union
We found that the magnetic field at the geosynchronous orbit started to change from the dipole- to tail-like configuration, i.e., plasmasheet thinning in the evening sector six minutes after the onset of development of the ionospheric convection as derived from the ground magnetometers, when the IMF turned southward. The ionospheric plasma convection as observed by SuperDARN started to change simultaneously, and completely changed its pattern from the four-cell to two-cell at the onset of the plasmasheet thinning. The plasmasheet thinning was followed by the development of the partial ring current (PRC) within a few minutes, which implies that the plasma convection was enhanced in the near-earth magnetotail. These results indicate that the convection electric field in the near-earth magnetotail develops concurrently with the large-scale two-cell convection in the ionosphere, suggesting a possible role of the ionosphere in driving the convection in the near-earth magnetotail.
- リンク情報
- ID情報
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- DOI : 10.1029/155GM06
- SCOPUS ID : 84953716822