О воздействии МГД-резонаторов на геомагнитные пульсации
The examples of the time-frequency structure of geomagnetic pulsations are given. It is shown that in some cases the pulsations of different types may have one thing in common — a discrete structure of the dynamic spectrum. The discreteness is manifested in the alternation of «permitted» and «forbid...
Збережено в:
| Дата: | 2014 |
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| Автори: | , , , |
| Формат: | Стаття |
| Мова: | Russian |
| Опубліковано: |
Інститут геофізики ім. С.I. Субботіна НАН України
2014
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| Назва видання: | Геофизический журнал |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/101173 |
| Теги: |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | О воздействии МГД-резонаторов на геомагнитные пульсации / Б.В. Довбня, А.С. Потапов, А.В. Гульельми, Р.А. Рахматулин // Геофизический журнал. — 2014. — Т. 36, № 6. — С. 143-152. — Бібліогр.: 35 назв. — рос. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| Резюме: | The examples of the time-frequency structure of geomagnetic pulsations are given. It is shown that in some cases the pulsations of different types may have one thing in common — a discrete structure of the dynamic spectrum. The discreteness is manifested in the alternation of «permitted» and «forbidden» frequencies. Such a structure is analogous to a periodic ripple structure of spectral bands formed by MHD cavities in the magnetosphere-ionosphere plasma. Appearance of discrete spectrum of pulsations is attributed to resonator filtering properties acting on hydromagnetic waves as they pass through the resonant cavity. It is assumed that in some cases the discreteness can provide useful information about the propagation channels of signals of lithospheric or magnetospheric origin. |
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