| タイトル | AMPTE CCE observations of Pc 3-4 pulsations at L = 2-6 |
| 著者（英） | Strangeway, Robert J.; Anderson, Brian J.; Takahashi, Kazue |
| 著者所属（英） | California Univ.|Johns Hopkins Univ. |
| 発行日 | 1990-10-01 |
| 言語 | eng |
| 内容記述 | Magnetic field data acquired by the AMPTE CCE satellite from L = 2-6 are analyzed. A procedure was specially developed to reduce the artificial modulation and noise in magnetic field measurements, making it possible to detect Pc 3-4 pulsations with amplitudes only 1 nT or less, even for L values less than 3. A survey of 41 CCE passes in L = 2-6 and in the postnoon sector showed that the most commonly observed pulsations in this region were the east-west oscillations of magnetic field with clearly L-dependent frequencies; these are identified as the toroidal mode standing Alfven waves. A relationship was found between the pulsation frequency and plasma density, showing that the pulsation data can be used to estimate the plasma mass density in the inner magnetosphere. |
| NASA分類 | GEOPHYSICS |
| レポートNO | 91A10416 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/352477 |
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