Open AccessStudying auroral activity using the SME index at the magnetic storm main phase during CIR and ICME events
Author(s) -
Роман Бороев,
Mikhail Vasiliev
Publication year - 2021
Publication title -
solar-terrestrial physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.11
H-Index - 2
ISSN - 2500-0535
DOI - 10.12737/stp-74202103
Subject(s) - storm , interplanetary spaceflight , geomagnetic storm , interplanetary magnetic field , index (typography) , magnetic field , physics , climatology , meteorology , atmospheric sciences , geophysics , solar wind , geology , computer science , quantum mechanics , world wide web
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.