High-latitude peculiarities of the geomagnetic SI impulse propagation meridional velocity during sharp decrease of solar wind density

Авторы

Makarov George Afanasyevich, Baishev Dmitriy Gavrilievich, Moiseyev Aleksey Vladimirovich, Solovyev Stepan Ivanovich, Pilipenko V. A., Engebretson Mark, Yumoto Kiyohumi

Заглавие

Тип/вид публикации

Статья в сборнике трудов конференций

Язык публикации

Английский

Примечания о библиографии

Библиогр. в конце ст. (8 назв.)

УДК

550.385.37

Ключевые слова

внезапный импульс; солнечный ветер; геомагнитные пульсации; геомагнитное поле; sudden impulse; solar wind; geomagnetic pulsations; geomagnetic field

Рубрикатор ГРНТИ

Геофизика

Источник

Proceedings of the Fifth International Conference on Substorms. – 2000

Страницы

P. 523-526

Полное название

Proceedings of the Fifth International Conference on Substorms

Место издания/Издательство

Noordwijk, Netherlands, European Space Agency

ISBN

92-9092-772-0

Информация для ссылки

International conference on substorms (5 ; St. Petersburg ; 2000). Proceedings of the 5-th International Conference on Substorms, 16-20 May 2000 Congress Centre of the Arctic and Antarctic Research Institute, St. Petersburg, Russia / edited by A. Wilson ; sponsored by Russian Foundation for Basic Research (RFBR), International Association of Geomagnetism and Aeronomy (IAGA), European Space Agency (ESA). - Noordwijk, Netherlands : European Space Agency, 2000. - 626 p.

Аннотация

The geomagnetic manifestation of sudden impulse (SI) caused by a sharp decrease of the solar wind dynamic pressure due to the plasma density reduction is considered. The observational data of the magnetometer world network have been analysed. The propagation velocities of the SI signal in the meridional direction by using data of the horizontal component of geomagnetic field in the high-latitude region have been calculated. It is found that at a sharp decrease of the solar wind density the meridional propagation of the SI signal is in the northern direction. In this case, on the day side the propagation velocity is constant but there is a tendency of its increasing in the MLT morning sector. It has been established that the meridional propagation velocity of the SI signal at a sharp decrease of the solar wind density depends on the geomagnetic latitude, i.e. with the rise of latitude the velocity in the auroral zone decreases and in the polar cap it increases.

Библиографическая запись

High-latitude peculiarities of the geomagnetic SI impulse propagation meridional velocity during sharp decrease of solar wind density / G. A. Makarov, D. G. Baishev, A. V. Moiseyev, S. I. Solovyev, V. A. Pilipenko, M. J. Engebretson, K. Yumoto // Proceedings of the Fifth International Conference on Substorms : 16-20 May 2000 Congress Centre of the Arctic and Antarctic Research Institute, St. Petersburg, Russia. − Noordwijk, Netherlands : European Space Agency, 2000. − P. 523-526.

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