J. Space Weather Space Clim.
Volume 9, 2019
|Number of page(s)||19|
|Published online||27 May 2019|
Impulsive disturbances of the geomagnetic field as a cause of induced currents of electric power lines
Polar Geophysical Institute, Apatity, Russia
2 Geophysical Center, Moscow, Russia
3 Institute of Physics of the Earth, Moscow, Russia
4 Augsburg University, Minneapolis, USA
5 Northern Energetics Research Center, Apatity, Russia
* Corresponding author: email@example.com
Accepted: 8 April 2019
Geomagnetically induced currents (GICs) represent a signiﬁcant challenge for society on a stable electricity supply. Space weather activates global electromagnetic and plasma processes in the near-Earth environment, however, the highest risk of GICs is related not directly to those processes with enormous energy yield, but too much weaker, but fast, processes. Here we consider several typical examples of such fast processes and their impact on power transmission lines in the Kola Peninsula and in Karelia: interplanetary shocks; traveling convection vortices; impulses embedded in substorms; and irregular Pi3 pulsations. Geomagnetic field variability is examined using data from the IMAGE (International Monitor for Auroral Geomagnetic Effects) magnetometer array. We have confirmed that during the considered impulsive events the ionospheric currents fluctuate in both the East-West and North-South directions, and they do induce GIC in latitudinally extended electric power line. It is important to reveal the fine structure of fast geomagnetic variations during storms and substorms not only for a practical point of view but also for a fundamental scientific view.
Key words: Geomagnetically indices currents (GICs) / impulsive geomagnetic disturbances / Pi3 pulsations
© V. Belakhovsky et al., Published by EDP Sciences 2015
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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