University of Oulu

Parhomov, V., Eselevich, V., Eselevich, M., Tsegmed, B., Khomutov, S., Tero, R., Popov, G., Mochalov, A., Pilgaev, S., & Rakhmatulin, R. (2022). Correspondence of a global isolated substorm to the McPherron statistical model. Solar-Terrestrial Physics, 8(2), 37–46.

Correspondence of a global isolated substorm to the McPherron statistical model

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Author: Vladimir, Parhomov1; Viktor, Eselevich2; Maxim, Eselevich2;
Organizations: 1Baikal State University, Irkutsk, Russia
2Institute of Solar-Terrestrial Physics SB RAS, Irkutsk, Russia
3Institute of Astronomy and Geophysics MAS, Ulaanbaatar, Mongolia
4Institute of Cosmophysical Research and Radio Wave Propagation FEB RAS, Paratunka, Russia
5Sodankylä Geophysical Observatory, University of Oulu, Sodankylä, Finland
6Polar Geophysical Institute RAS, Apatity, Russia
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 1.2 MB)
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Language: English
Published: Infra-M Academic Publishing House, 2022
Publish Date: 2023-02-17


It is shown that a diamagnetic structure (DS) of the slow solar wind (SW), the source of which on the Sun was a chain of streamers, arrived at Earth’s orbit on December 22, 2015. It interacted with Earth’s magnetosphere under conditions when the northward Bz component of the interplanetary magnetic field (IMF) remained for a long time in preceding undisturbed SW. The interaction and a sharp change in the direction of Bz to the south generated an isolated substorm whose duration depends on the duration of interaction with the DS. The substorm began at midday with the passage of the DS into the magnetosphere and spread to the east. All phases of the substorm — growth, expansion, and recovery — were observed for two hours. Variations in the SW and IMF parameters are shown to coincide for the isolated substorm whose energy source was the slow solar wind DS, and a trigger was the abrupt change in the direction of the vertical IMF component from north to south. The coincidence is justified by statistical generalizations of the same parameters in 40 % of cases of long-term observations of individual substorms whose trigger was a change in Bz direction.

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Series: Solar-terrestrial physics
ISSN: 2500-0535
ISSN-E: 2500-0535
ISSN-L: 2500-0535
Volume: 8
Issue: 2
Pages: 37 - 46
DOI: 10.12737/stp-82202206
Type of Publication: A1 Journal article – refereed
Field of Science: 115 Astronomy and space science
1171 Geosciences
Copyright information: © 2022. V.A. Parkhomov, V.G. Eselevich, M.V. Eselevich, B. Tsegmed, S.Yu. Khomutov, T. Raita, G.V. Popov, A.A. Mochalov, S.V. Pilgaev, R.A. Rakhmatulin. This is an open access article under the CC BY-NC-ND license.