| タイトル | A statistical study of plasma sheet dynamics using ISEE 1 and 2 energetic particle flux data |
| 著者（英） | Parks, G. K.; Saint-Marc, A.; Reme, H.; Dandouras, J.; Sauvaud, J. A. |
| 著者所属（英） | Washington Univ.|Centre d'Etude Spatiale des Rayonnements |
| 発行日 | 1986-06-01 |
| 言語 | eng |
| 内容記述 | Plasma sheet dynamics during substorms are studied by analyzing 461 cases of transient dropout events of the 1.5 and 6-keV particle fluxes detected by ISEE 1 and 2 satellites. The instruments for detecting low- and high-energy particles are described. The spatial distribution of flux dropout events, and the events' relationship to magnetospheric activity level are examined. Substorm events without observed flux dropout events are investigated. The data reveal that the flux dropout distribution is isotropic, between 12-23 earth radii, and is present in the entire nightside plasma sheet; and the substorms without flux dropout are more frequent near earth and magnetospheric flanks. It is observed that tailward of 12 earth radii the flux dropout events and substorms without flux dropout are similar. The Chao et al. (1977) MHD rarefaction wave propagation model and the Hones (1973, 1980) near-tail, X-type magnetic neutral line formation model are discussed and compared to the experimental data. It is noted that neither model explains the plasma sheet dynamics observed. |
| NASA分類 | GEOPHYSICS |
| レポートNO | 86A41837 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/383961 |
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