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Formation of plateau regions in the magnetospheric plasma pressure distribution and large-scale field-aligned currentsтезисы доклада
- Авторы: Kirpichev I.P., Antonova E.E.
- Сборник: PHYSICS OF AURORAL PHENOMENA 46th Annual Seminar Abstracts
- Тезисы
- Год издания: 2023
- Место издания: Polar Geophysical Institute, Apatity
- Первая страница: 31
- Последняя страница: 31
- Аннотация: Large-scale distributions of field-aligned currents of Iijima and Potemra (1976) contains the regions between current sheets where field-aligned currents are very week or wholly absent. It is ordinarily considered, that large-scale field-aligned currents are generated due to formation of plasma pressure gradients along the isolines of flux tube volumes. The appearance of regions where field-aligned currents are near to zero can be naturally connected with the appearance of regions in the plasma pressure distribution near the equatorial plane where plasma pressure gradients are very small. Such regions can be named the plasma pressure plateaus. The plasma pressure plateaus were first observed on INTERBALL/Tail probe, however, only in two case studies. Results of THEMIS multisatellite observations provide the possibility to observe and study the evolution plateau formation during February, 2009 (Kirpichev and Antonova 2023). We present the latest results of the pressure plateau observations and discuss their importance for the study of the field-aligned current nature. Iijima T. and Potemra T.A. (1978). J. Geophys. Res., 83, 599–615. doi:10.1029/JA083iA02p00599 Kirpichev I.P., Antonova E.E. (2023). Geomagnetism and Aeronomy, Vol. 63. doi:10.1134/S001679322260059X
- Добавил в систему: Антонова Елизавета Евгеньевна