Abstract

The results of the instrumental and macroseismic studies are reported for the tangible earthquake with intensity of up to 5–6 and amplitude of MLH = 4.8 that occurred near the western coast of Sakhalin Island. The main parameters of the Kostromskoe earthquake have been estimated in two versions: (1) based on the data from the local network of digital stations located in southern Sakhalin, and (2) from the complex of local, regional, and global observations. It has been noted that the development of the local network in southern Sakhalin allowed the seismic regime in the earthquake area to be investigated in more detail and the mechanisms of both the individual weak and group events to be derived. The acquired data on the dislocation style of the main shock and aftershocks in the days following the event were used for the geological-tectonic interpretation of the Kostromskoe earthquake.

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