CALIBRATION OF SEISMIC INTENSITY ATTENUATION MODEL FOR THE BALKAN REGION (THE 2020 EARTHQUAKES IN CROATIA)    

N. I. Frolova^a,#, I. P. Gabsatarova^b,##, S. P. Suchshev^c###, 
A. N. Ugarov^c, N. S. Malaeva^a

^aSergeev Institute of Environmental Geoscience, Russian Academy of Sciences, Ulanskii per., 13, bld. 2, Moscow, 101000 Russia

^bGeophysical Survey, Russian Academy of Sciences,
Lenina av., 189, Obninsk, Kaluga region, 249035 Russia 

^cMoscow State Technical University named after Bauman,
2-ya Baumanskaya str., 5, Moscow, 105005 Russia

^#E-mail: frolovanina7@gmail.com
^##E-mail: ira@gsras.ru
^###E-mail: Sersan150@mail.ru

The paper describes the results of studies aimed at calibration of the parameters of the macroseismic field model in one of the zones in the Balkans based on the data of the 2020 earthquakes in Croatia. The zone is located within the continental region of Croatia, on the border of the Dinarids and the southern part of the Pannonian Basin, which are a part of the Alpine-Himalayan seismic belt. The calibrated parameters of the macroseismic field model obtained for another region of this belt, located in the Caucasus, which manifest the similar features of tectonic development, were used for comparison. In order to increase the reliability of near real time earthquake loss estimations the paper analyzes the alert messages from several seismological centers, focal mechanisms for taking into account the direction of radiation and the choice of a seismogenic fault in the Earth's crust. Simulated intensities obtained with “Extremum” System application were compared with reported ones. The obtained calibration results supplemented the database used for earthquake consequences simulation in emergency mode, and will be used for near real time loss estimations with the “Extremum” system application in the case of destructive earthquakes in the Balkan Peninsula region.

Keywords: near real time earthquake loss estimates, damaging earthquake, macroseismic field model calibration, the Alpine-Himalayan seismic active belt, region analogs, Information System “Extremum”

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