Tectonic stress field analysis of the northern part of the Kuril-Okhotsk region before the May 24, 2013 deep-focus earthquake

摘要

This paper presents the results of reconstruction of the modern tectonic stress field of the northern part of the Kuril-Okhotsk region prior to the May 24, 2013 deep-focus earthquake. This earthquake is the strongest deep-focus earthquake not only in the Okhotsk region but also in the world over the entire period of seismic observations. The tectonic stress field is reconstructed using the method of cataclastic analysis (MCA) of the earthquake source mechanism data. New data on the depth variations of regional tectonic stress field are obtained.