Registering from Space Anomalous Variations of Baikal Rift Zone Lineament Systems during the M = 5.6 Earthquake Occurred on September 21, 2020
Here we present the results of the study of lineament system anomalous variations during the preparation to the M = 5.6 earthquake that occurred on September 21, 2020 near the Baikal Lake 21 km from Kultuk settlement at a depth of 10 km. The method of the research is described here that is based on the automated lineament analysis of satellite imagery. The features of Baikal rift zone structure and its seismic activity have been analyzed. Schemes of stroke elongation lines, schemes of regional lineaments and their rose-diagrams have been built on the base of the processing of a series of satellite imagery obtained by Terra (MODIS) in the period between May 25 and October 6, 2020, as well as the total lengths of local lineaments and ratios of their lengths for various directions have been calculated. All this have allowed us to reveal anomalous variations of lineament systems 14 and 5 days before the earthquake of September 21, 2020. It is concluded that these anomalies belong to the geodynamic precursors of an earthquake.