Solnechno-Zemnaya Fizika Solnechno-Zemnaya Fizika Солнечно-земная физика 2712-9640 43812 10.12737/szf-74202103 Результаты исследований Results of current research Результаты исследований Studying auroral activity using the SME index at the magnetic storm main phase during CIR and ICME events Исследование авроральной активности по данным SME-индекса на главных фазах магнитных бурь во время CIR- и ICME-событий Бороев Роман Николаевич Boroev Roman Nikolaevich boroyev@ikfia.ysn.ru

кандидат физико-математических наук;

candidate of physical and mathematical sciences;

 Васильев Михаил Семенович Vasiliev Mikhail Semenovich m.s.vasiliev@ikfia.ysn.ru Институт космофизических исследований и аэрономии им. Ю.Г. Шафера СО РАН Якутск Россия Yu.G. Shafer Institute of Cosmophysical Research and Aeronomy SB RAS Yakutsk Russian Federation Северо-Восточный федеральный университет им. М.К. Аммосова Якутск Россия M.K. Ammosov North-Eastern Federal University Yakutsk Russian Federation Институт космофизических исследований и аэрономии им. Ю.Г. Шафера СО РАН Якутск Россия Yu.G. Shafer Institute of Cosmophysical Research and Aeronomy of SB RAS Yakutsk Russian Federation Северо-Восточный федеральный университет им. М.К. Аммосова Якутск Россия M.K. Ammosov North-Eastern Federal University Yakutsk Russian Federation 20 12 2021 20 12 2021 7 4 19 24 28 04 2021 16 08 2021 https://zh-szf.ru/en/nauka/article/43812/view

В работе исследована связь SME-ин-декса с характеристиками магнитной бури и параметрами межпланетной среды на главных фазах магнитных бурь, вызванных разными типами солнечного ветра (СВ). За период 1990–2017 гг. было отобрано 107 магнитных бурь, индуцированных событиями (64) CIR и (43) ICME. Показано, что, по сравнению с АЕ и Kр, наблюдается более сильная корреляция между средним значением SME-индекса (SMEaver) и параметрами межпланетной среды на главных фазах магнитных бурь. Получены близкие значения коэффициентов корреляций между SMEaver и электрическим полем СВ (южной Bz ММП) для событий CIR и ICME. Установлено, что значения SMEaver-индекса увеличиваются с ростом скорости развития магнитной бури и |Dstmin|. Различий в уравнениях линейных регрессий между SMEaver и |Dstmin| для событий CIR и ICME не обнаружено.

. In this paper, we examine the relationship of the SME index with magnetic storm characteristics and interplanetary medium parameters during the main phase of magnetic storms caused by CIR and ICME events. Over the period 1990–2017, 107 magnetic storms driven by (64) CIR and (43) ICME events have been selected. In contrast to AE and Kp, a stronger correlation is shown to exist between the average SME index (SMEaver) and interplanetary medium parameters during the magnetic storm main phase. Close correlation coefficients between SMEaver and the SW electric field (southward IMF Bz) have been obtained for CIR and ICME events. SMEaver has been found to increase with the rate of magnetic storm development and |Dstmin|. For CIR and ICME events, no difference has been revealed between SMEaver and |Dstmin| in linear regression equations.

 магнитная буря SME-индекс Dst-индекс солнечный ветер электрическое поле magnetic storm SME index Dst index solar wind electric field Работа выполнена в рамках государственного задания (номер госрегистрации № АААА-А21-121012 000007-4). The work was carried out in the framework of Government Assignment (State Registration Number AAAA A21-121012000007-4).

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