|
ИСТИНА |
Войти в систему Регистрация |
ИПМех РАН |
||
Relationships among Solar Activity, SEP Occurrence Frequency, and Solar Energetic Particle Event Distribution Function Nymmik R.Aстатья
- Автор: Nymmik R.A.
- Сборник: Proceedings of the 25th ICRC
- Том: 6
- Год издания: 1999
- Место издания: USA
- Первая страница: 280
- Последняя страница: 283
- Аннотация: The solar cycle 20-22 direct spacecraft measurement results are used to analyze the occurrence frequency and distribution function of solar energetic particle (SEP) events as dependent on solar activity. The analysis has shown that · the mean occurrence frequency of the SEP events with ³30 MeV proton fluence sizes exceeding 106 is proportional to sunspot number, · the SEP event proton distribution functions for periods of different solar activity levels can be described to be power-law functions whose spectral form (spectral indices and cutoff values) are the same. The above results permit the following conclusions: a) to within statistical deviations, the total number of SEP events observed during any given time interval is proportional to the sum of mean-yearly sunspot numbers; b) large SEP
- Добавил в систему: Ныммик Рихо Альфредович