| タイトル | The causes of goemagnetic activity |
| 本文（外部サイト） | http://hdl.handle.net/2060/19760011632 |
| 著者（英） | Svalgaard, L. |
| 著者所属（英） | Stanford Univ. |
| 発行日 | 1975-12-01 |
| 言語 | eng |
| 内容記述 | The causes of geomagnetic activity are studied both theoretically in terms of the reconnection model and empirically using the am-index and interplanetary solar wind parameters. It is found that two separate mechanisms supply energy to the magnetosphere. One mechanism depends critically on the magnitude and direction of the interplanetary magnetic field. Both depend strongly on solar wind speed. The energy input is modulated by the tilt of the dipole axis being maximum for 90 deg tilt against the solar wind flow direction. The energy input due to reconnection has no significant seasonal variations for equal amount of both sector polarities. |
| NASA分類 | GEOPHYSICS |
| レポートNO | 76N18720
SU-IPR-646
NASA-CR-146295 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/186814 |
