Abstract
We consider the Boguchan January 17, 2014 earthquake(Mw=4.3) occurred on the Siberian Platform in the area of the sublongitudinal part of the Angara River. Instrumental and macroseismic data on this seismic event, tectonic features and deep structure of the crust within its source area are analyzed. Seismic moment tensor and hypocentral depth of the earthquake are calculated from its surface wave amplitude spectra. It has been shown that the concentration and relaxation of the tectonic stress in the source area are likely to be conditioned by velocity heterogeneities in the upper and middle crust. The obtained facts evidence that the study earthquake, most probably, is not connected with filling of the Angara cascade of water reservoirs.
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