Combined Analysis of Anomalous Variations in Various Geophysical Fields during Preparation of the M5.6 Earthquake near Lake Baikal on September 22, 2020, Based on Satellite Data

Anomalous variations in various geophysical fields (lineament systems, thermal fields, and ionospheric parameters) during the earthquake with the magnitude M = 5.6, which took place near Lake Baikal on September 22, 2020, and during its preparation, are studied. Features of the geophysical fields are described. Combined analysis of anomalous variations in the geophysical fields in the lithosphere, atmosphere, and ionosphere during the earthquake preparation is carried out. Based on the analysis results, we detect anomalous variations in the lineament systems 15 and 6 days before; in the thermal fields 15 and 14 days before; and in the ionospheric parameters 8, 7, and 6 days before the earthquake. Correspondences are found between the occurrence of the maxima of the lineament systems and the thermal fields 15 and 6 days before the earthquake and changes in the state of the ionosphere and thermal fields 9–10 days and 4 days before the earthquake.