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Ionospheric propagation of geomagnetic perturbations caused by equatorial electrojetстатья
Дата последнего поиска статьи во внешних источниках: 28 июля 2021 г.
- Авторы: Surkov V.V., Fedorov E.N., Pilipenko V.A., Rao D.R.I
- Журнал: Geomagnetism and Aeronomy
- Том: 37
- Номер: 2
- Год издания: 1997
- Издательство: Maik Nauka/Interperiodica Publishing
- Местоположение издательства: Russian Federation
- Первая страница: 61
- Последняя страница: 70
- Аннотация: The possibility of the ionospheric propagation of MHD-disturbances caused by the equatorial electrojet is considered theoretically. The obtained dispersion relation indicates that, within the low-frequency range, only harmonics exponentially decreasing with distance can be present in the near-equatorial ionosphere. However, the characteristic scale of the amplitude decline for a mode of the type of large-scale surface wave proves to be larger than the ionospheric skin lengh and may reach a few thousand kilometers. At distances of about thousand km, phase shifts may attain values of 90 degrees or so. The disturbances induced by the equatorial electrojet can yield a noticable contribution to the composition of geomagnetic pulsations recorded at near-equatorial stations.
- Добавил в систему: Сурков Вадим Вадимович