Problems of Engineering Seismology: article

PRACTICE OF THE NORTH-WEST CAUCASUS DETAILED SEISMIC ZONING, TAKING INTO ACCOUNT THE RESULTS OF PALEOSEISMOLOGICAL STUDIES
A.I. LUTIKOV1,2
E.A. ROGOZHIN3,4
A.N. OVSYUCHENKO2
G.Y. DONTSOVA5
S.N. RODINA2
A.S. LARKOV2
A.I. SYSOLIN2
V.A. AKIMOV6
1 Federal Research Center «Unified Geophysical Survey of the Russian Academy of Sciences» FRC «UGS RAS»
2 Schmidt Institute of Physics of the Earth, Russian Academy of Sciences.
3 Schmidt Institute of Physics of the Earth, Russian Academy of Sciences
4 Geophysical Institute - the Affiliate of the Vladikavkaz Scientific Center of the Russian Academy of Sciences.
5 Federal Research Center «Unified Geophysical Survey of the Russian Academy of Sciences» FRC «UGS RAS».
6 Civil Defense and Disaster Management All Russian Science Research Institute 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.
Journal: Problems of Engineering Seismology
Tome: 46
Number: 3
Year: 2019
Pages: 110-122
UDK: 550.34
DOI: 10.21455/VIS2019.3-7
Аnnotation file
Bibliographic list
Keywords: reccurence law, PFE zones, seismic hazard maps, paleoearthquakes, seismic activity, seismic shaking, seismic mode
Аnnotation: The new generalization of the North-West Caucasus seismic hazard data are given taking into account the influence of paleoseismological studies on the seismic hazard level. An attempt has been made to use the data on paleo-earthquakes for direct seismic hazard assessment by comparing, in accordance with the reccurence law the magnitude of a strong earthquake, with the estimated number of weak seismic events. A fundamentally new seismotectonic base (map of the possible foci of earthquakes zones (PFE)) for compiling detailed seismic hazard maps of the region has been prepared. Based on the map of the PFE zones, seismic impacts are calculated on a probabilistic basis. On the compiled maps, the northwestern and central segments of the Greater Caucasus look like a seismic hazardous area, where the level of seismic effects reaches 8.5 points on maps A and B. At the same time, compared to the data from the CSZ-97 maps, the results look more differentiated and are generally noticeable lower 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.