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Growth of geomagnetic-induced currents during coronal mass ejection and corotating solar wind streams of geomagnetic storms in 2021
- Authors: Belakhovsky V.B.1, Pilipenko V.A.2, Sakharov Y.A.1,2, Selivanov V.N.3
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Affiliations:
- Polar Geophysical Institute
- Geophysical Center of the Russian Academy of Sciences
- Northern Energetics Research Centre, Federal Research Centre “Kola Science Centre of the Russian Academy of Sciences”
- Issue: Vol 87, No 2 (2023)
- Pages: 271-277
- Section: Articles
- URL: https://rjsvd.com/0367-6765/article/view/654488
- DOI: https://doi.org/10.31857/S0367676522700478
- EDN: https://elibrary.ru/AITPFO
- ID: 654488
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Abstract
We analyzed the growth of geomagnetically induced currents (GIC) recorded in power lines on the Kola Peninsula during two types of magnetic storms: caused by the arrival of a coronal mass ejection (CME) and caused by a high-speed corotating solar wind stream (CIR). The relative efficiency of the CIR of the storm (the ratio of the maximum values of the GIC and the |Dst| index) turned out to be almost 3 times greater than that of the CME of the storm. This is caused by the large contribution of Pi3 geomagnetic pulsations and associated medium-scale vortex current systems in the ionosphere.
About the authors
V. B. Belakhovsky
Polar Geophysical Institute
Author for correspondence.
Email: belakhov@mail.ru
Russia, 184209, Apatity
V. A. Pilipenko
Geophysical Center of the Russian Academy of Sciences
Email: belakhov@mail.ru
Russia, 119296, Moscow
Ya. A. Sakharov
Polar Geophysical Institute; Geophysical Center of the Russian Academy of Sciences
Email: belakhov@mail.ru
Russia, 184209, Apatity; Russia, 119296, Moscow
V. N. Selivanov
Northern Energetics Research Centre, Federal Research Centre “Kola Science Centreof the Russian Academy of Sciences”
Email: belakhov@mail.ru
Russia, 184209, Apatity
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