Abstract
Some aspects of the seismicity the Crime—Black Sea region are considered on the basis of the catalogued data on earthquakes that have occurred between 1970 and 2012. The complete list of the Crimean earthquakes for this period contains about 2140 events with magnitude ranging from −1.5 to 5.5. Bulletins contain information about compressional and shear waves arrival times regarding nearly 2000 earthquakes. A new approach to the definition of the coordinates of all of the events was applied to re-establish the hypocenters of the catalogued earthquakes. The obtained results indicate that the bulk of the earthquakes’ foci in the region are located in the crust. However, some 2.5% of the foci are located at the depths ranging from 50 to 250 km. The new distribution of foci of earthquakes shows the concentration of foci in the form of two inclined branches, the center of which is located under the Yalto-Alushta seismic focal zone. The whole distribution of foci in depth corresponds to the relief of the lithosphere.
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Acknowledgments
Authors are grateful to I.P. Gaptasarova, B.G. Pustovitenko, and V.S. Gobarenko for the discussion of the problem and for the useful comments.
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Burmin, V.Y., Shumlianska, L.O. Spatial distribution of earthquake hypocenters in the Crimea—Black Sea region. J Seismol 22, 391–405 (2018). https://doi.org/10.1007/s10950-017-9712-y
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DOI: https://doi.org/10.1007/s10950-017-9712-y