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Latitudinal structure of precipitation in the dayside polar cuspтезисы доклада
- Авторы: Vorobjev V.G., Yagodkina O.I., Antonova E.E.
- Сборник: The 45th annual seminar "Physics of auroral phenomena", Abstracts
- Тезисы
- Год издания: 2022
- Место издания: Polar Geophysical Institute Apatity
- Первая страница: 24
- Последняя страница: 24
- Аннотация: Dayside polar cusps (one in each hemisphere) are a funnel-shaped structure in a geomagnetic field, in which direct penetration of solar wind plasma to the ionospheric heights is possible along the geomagnetic field lines. The probability distribution of the cusp observation in the ionosphere has a maximum of about the midday meridian, the length in longitude is ~ 3 hours. Observations from DMSP series spacecraft were used to study the latitudinal structure of cusp precipitation. The poleward and equatorward boundaries of the cusp were determined by thecharacteristics of the precipitating ions and electrons. More than one hundred complete latitudinal passes of the cusp region have been studied with the availability of data on IMF and solar wind plasma. The features of the ion pressure distribution in the cusp are investigated depending on the magnitude and direction of the Bz and By components of the IMF and the solar wind dynamic pressure. The obtained results are discussed.
- Добавил в систему: Антонова Елизавета Евгеньевна