| タイトル | Two classes of cosmic ray decrease |
| 著者（英） | Mendell, R. B.; Roelof, E. C.; Verschell, H. J.; Korff, S. A. |
| 発行日 | 1975-04-01 |
| 言語 | eng |
| 内容記述 | In a study of galactic cosmic ray intensity variations it had been found that there are two distinct classes of transient intensity decrease, which have been called type I and type II. Type I events are flare-associated Forbush decreases. Type II events appear to be associated with 27-day recurrences. It is suggested, on the basis of several characteristics of the decreases, that type II events are simply the subsequent evolution of type I events or quasi-stationary 'corotating' structures loosely associated with active regions. |
| NASA分類 | SPACE RADIATION |
| レポートNO | 75A28734 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/448339 |
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