| Автор | Greenhill, J. G. |
| Автор | Fenton, K. B. |
| Автор | Fenton, A. G. |
| Автор | White, K. S. |
| Дата выпуска | 1972 |
| dc.description | Quasi‐periodic 12.5‐min fluctuations occurred in the counting rates of Geiger counters and a neutron counter during level flight of a balloon over Wilkes, Antarctica, on September 3, 1966. Correlated fluctuations were observed in the Wilkes magnetometer record. A large solar cosmic‐ray event was in progress at the time of the flight. The periodic modulation process is shown to have an energy dependence with a peak at about 50 Mev for solar protons. No periodicity was detected in the Geiger counter telescope rate, which had a proton threshold energy of > 110 Mev. It is suggested that the modulation is a result of scattering by hydromagnetic waves in the distant part of the tail. The protons with E > 110 Mev did not pass through the modulating region and probably gained access to the magnetosphere on the dayside. |
| Формат | application.pdf |
| Копирайт | Copyright © 1972 by the American Geophysical Union. |
| Тема | GEOCHEMISTRY |
| Тема | Particles and Fields in Interplanetary Space: Cosmic rays |
| Тема | GEOMAGNETISM AND PALEOMAGNETISM |
| Тема | Particles and Fields in the Earth's Magnetosphere: Interactions between magnetosphere and cosmic rays |
| Название | 12.5‐minute periodicity in solar proton fluxes at balloon altitude and in magnetic micropulsations |
| Тип | article |
| DOI | 10.1029/JA077i034p06656 |
| Electronic ISSN | 2156-2202 |
| Print ISSN | 0148-0227 |
| Журнал | Journal of Geophysical Research |
| Том | 77 |
| Первая страница | 6656 |
| Последняя страница | 6664 |
| Выпуск | 34 |
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