ANALYSIS OF THE SEISMIC AND IONOSPHERIC EFFECTS OF THE KUDARINSKY EARTHQUAKE ON DECEMBER 9, 2020

• Published in: Geodinamika i tektonofizika Vol. 13; no. 2
• Main Authors: Dobrynina, A. A., Perevalova, N. P., Sankov, V. A., Edemsky, I. K., Lukhnev, A. V.
• Format: Journal Article
• Language: English
• Published: Russian Academy of Sciences, Siberian Branch, Institute of the Earth's crust 01-06-2022
• Subjects: baikal rift; glonass; gps; ionospheric disturbances; kudarinsky earthquake; roti; satellite geodesy; seismicity; total electron content
• ISSN: 2078-502X; 2078-502X
• DOI: 10.5800/GT-2022-13-2s-0622

According to the data obtained on the equipment of the IEC SB RAS complex monitoring base for hazardous geological processes "Buguldeika" (Shared Research Facilities "Geodynamics and Geochronology" of IEC SB RAS) and Shared Research Facilities "Angara" of ISTP SB RAS an analysis of the characteristics of the Kudarinsky earthquake (09.12.2020) and the behaviour of the ionosphere during this event was carried out. The source parameters of the earthquake were obtained – the seismic moment of the earthquake (M0=3.02·1017 N·m), the moment magnitude (Mw=5.6), the source radius (2.43 km), and the stress drop (1.26 MPa).
The analysis of the ionosphere behaviour carried out using GPS/GLONASS receivers did not reveal disturbances caused by the Kudarinsky earthquake, which is most likely due to the relatively small magnitude of this earthquake. An analysis of the observation series related to the Kudarinsky earthquake showed the efficiency of using the Core Facilities Centre equipment and complex monitoring bases for studying seismicity, which is the most dangerous natural process for the Baikal region.