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Appearance of magnetic storms in variations of electrical parameters in the surface layer of the atmosphere
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 82nd EAGE Annual Conference & Exhibition, Oct 2021, Volume 2021, p.1 - 5
Abstract
Geomagnetic disturbances induce slowly varying electric fields at the Earth’s surface that cause geomagnetically induced currents (GICs) to flow in the earth and on man-made conducting paths such as transmission lines and natural gas pipelines. Recently, in the reseaches of geomagnetic disturbances, much attention has been paid to the study of the effects of solar activity and associated geomagnetic storms in atmospheric electricity, mainly in high and middle latitudes. The results of processing and analysis of data of registration of the parameters of the electric field at the Mikhnevo Geophysical Observatory and at the Center of Geophysical Monitoring in Moscow of Sadovsky Institute of Geosphere Dynamics of Russian Academy of Sciences during magnetic storms from 2016 to 2019 selected from the weather demonstrated a complex picture of the development of variations in electrical parameters, which manifest themselves in the form of alternating signs or in the form of positive or negative bay-like disturbances. This behavior can be explained both by different sources of the storms themselves, and by specific geophysical conditions during a particular storm. Atmospheric current is more sensitive to strong geomagnetic variations in comparison with the electric field.