| タイトル | Large-scale, near-Earth, magnetic fields from external sources and the corresponding induced internal field |
| 本文（外部サイト） | http://hdl.handle.net/2060/19840026736 |
| 著者（英） | Estes, R. H.; Langel, R. A. |
| 著者所属（英） | NASA Goddard Space Flight Center |
| 発行日 | 1983-04-01 |
| 言語 | eng |
| 内容記述 | Data from MAGSAT analyzed as a function of the Dst index to determine the first degree/order spherical harmonic description of the near-Earth external field and its corresponding induced field. The analysis was done separately for data from dawn and dusk. The MAGSAT data was compared with POGO data. A local time variation of the external field persists even during very quiet magnetic conditions; both a diurnal and 8-hour period are present. A crude estimate of Sq current in the 45 deg geomagnetic latitude range is obtained for 1966 to 1970. The current strength, located in the ionosphere and induced in the Earth, is typical of earlier determinations from surface data, although its maximum is displaced in local time from previous results. |
| NASA分類 | GEOPHYSICS |
| レポートNO | 84N34807
NASA-TM-85012
NAS 1.15:85012 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/158203 |
