| タイトル | A multipoint case study of high-latitude daytime ULF pulsations |
| 著者（英） | Newell, P. T.; Engebretson, M. J.; Arnoldy, R. L.; Anderson, B. J.; Cahill, L. J., Jr. |
| 著者所属（英） | Augsburg Coll.|Johns Hopkins Univ.|New Hampshire Univ.|Minnesota Univ. |
| 発行日 | 1989-12-01 |
| 言語 | eng |
| 内容記述 | A multipoint case study approach is used to delineate significant morphological differences between, and distinct sources for, two kinds of high-latitude dayside ULF wave activity in the Pc 3 to Pi 1 frequency range. Evidence is presented that narrow-band Pc 3-4 pulsations appear roughly simultaneously at widely spaced locations in the dayside magnetosphere and polar cap and that their occurrence/intensity is controlled by the cone angle of the IMF, while broadband Pi 1 type activity appears to be related closely to precipitation of energetic plasma sheet electrons, hence more localized ionospheric activity. Additional evidence is provided that the cusp/cleft regions play a significant part in the transmission to low altitudes of at least some of the wave energy of solar wind-controlled pulsations. |
| NASA分類 | GEOPHYSICS |
| レポートNO | 90A20749 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/358705 |
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