The Growth of Geomagnetically Induced Currents during CME and CIR Geomagnetic Storms in 2021.

Autor: Belakhovsky, V. B., Pilipenko, V. A., Sakharov, Ya. A., Selivanov, V. N.
Zdroj: Bulletin of the Russian Academy of Sciences: Physics; Feb2023, Vol. 87 Issue 2, p236-242, 7p
Abstrakt: The growth of geomagnetically induced currents (GIC) recorded in power lines on the Kola Peninsula during two types of magnetic storms was analyzed: one was caused by the arrival of a magnetic cloud during a coronal mass ejection (CME) and another was due to a high-speed solar wind stream creating a corotating interaction region (CIR). The relative efficiency of the CIR storm (the ratio of the maximum GIC and the |Dst| index values) turned out to be almost 3 times higher than that for the CME storm. This was caused by the large contribution of Pi3 geomagnetic pulsations and associated medium-scale vortex current systems in the ionosphere. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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