| タイトル | Separation of internal and external fields: A new technique of data screening |
| 本文（外部サイト） | http://hdl.handle.net/2060/19820013792 |
| 著者（英） | Lemouel, J. L.; Menvielle, M.; Ducruix, J. |
| 著者所属（英） | Paris VI Univ. |
| 発行日 | 1980-12-01 |
| 言語 | eng |
| 内容記述 | A method for eliminating transient variation from MAGSAT data is described. Instead of using the conventional Kp index, the Km index is used for the rejection of nonquiet data. To build the Km index, the surface of the Earth is divided in eight sectors. Each sector is defined by two or three magnetic observatories and its geographic limits. For each three hourly interval the MAGSAT tracks were drawn on a map showing the location of the station (the crosses), the limits of the sector, and the value of the mean K index inside each sector. No figure in a sector means that the activity level in this sector is lower than 5 nt; in a sector covered with number 1, the activity lies between 5 and 20 nt; 2 stands for any level greater than 20 nT. |
| NASA分類 | EARTH RESOURCES AND REMOTE SENSING |
| レポートNO | 82N21666
E82-10139
NASA-CR-168524
NAS 1.26:168524 |
| 権利 | No Copyright |
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