SEISMICITY of the AMUR and PRIMORYE, SAKHALIN and the KURIL-OKHOTSK REGION in 2020

Abstract

A review of the Amur and Primorye, Sakhalin, and the Kuril-Okhotsk region seismicity for 2020 is presented on the basis of data from the regional network of stationary seismic stations of the Sakhalin branch of the Geophysical Survey RAS with the involvement of data from adjacent seismological Russian and foreign agencies. Parameters of 2038 seismic events have been determined. Focal mechanisms were calculated for 43 earthquakes, 65 earthquakes have shown a macroseismic effect. A map of the epicenters is presented, the dis tribution of the number N of crustal and deep-focus earthquakes by a magnitude, a total seismic energy E for seismically active areas of three regions are given, in comparison with the average parameters previous years. The significant seismic events are described. The seismicity of the Priamurye and Primorye, Sakhalin, and the Kuril Okhotsk region in 2020 can be characterized as a moderate one within the background level.