Problems of Engineering Seismology: article

SEISMIC HAZARD MAPS OF THE NORTH-WEST AND CENTRAL CAUCASUS ON A DETAILED SCALE
V.A. AKIMOV1
V.A. ZAITSEV2
A.S. LARKOV3
A.I. LUTIKOV3
A.N. OVSYUCHENKO3
L.V. PANINA2
E.A. ROGOZHIN3
S.N. RODINA3
A.I. SYSOLIN3
1 Civil Defense and Disaster Management All Russian Science Research Institutu Ministry of Russian Federation for Civil Defense, Emergency and Elimination of Consequences of Natural Disasters Federal Center of Science and High Technologies FC VNII GoChS Emercom of Russia
2 Lomonosov Moscow State University
3 Schmidt Institute of Physics of the Earth, Russian Academy of Sciences
Journal: Problems of Engineering Seismology
Tome: 46
Number: 4
Year: 2019
Pages: 57-74
UDK: 550.34
DOI: 10.21455/VIS2019.4-4
Аnnotation file
Bibliographic list
Keywords: earthquakes, seismic hazard assessment, Caucasus, seismotectonics, paleoseismogeology, seismic shaking, seismic regime
Аnnotation: The results of a new generalization of data on seismic hazard of the Northwest and Central sectors of the Greater Caucasus are presented. A fundamentally new model of the seismotectonic basis for the seismic hazard map of the region has been prepared. On the basis of this model calculations of seismic influences on a probabilistic basis are made. The work included three stages. At the first stage, seismotectonic studies were carried out, as a result of which a seismotectonic model was created and a map of the zones of possible centers of earthquakes was compiled. At the second stage, seismicity and seismic mode were studied in detail. The third stage included the calculation of the frequency of seismic shakes of various intensities in the study area based on the parameters of the macroseismic field equation, seismic activity patterns, zones of possible earthquake sources and the slope of the frequency of the earthquakes. As a result, seismic hazard maps were compiled. The northwestern and central segments of the Greater Caucasus look like a seismic hazardous area, where the level of seismic impacts reaches 8.5 points on maps A and B. At the same time, in comparison with the data from the OSR-97 and OSR-2015 maps, the results obtained look more differentiated and generally significantly reduce the level of seismic hazard in the region. The work is important from a methodological point of view in the light of seismic risk management of this densely populated and actively developed territory of Russia.