EGU22-114
https://doi.org/10.5194/egusphere-egu22-114
EGU General Assembly 2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Seismic intensity outside the earthquake focal zone

Anastasia Nekrasova1 and Vladimir Kossobokov1,2
Anastasia Nekrasova and Vladimir Kossobokov
  • 1Institute of Earthquake Prediction Theory and Mathematical Geophysics, Russian Acad. Sc., Moscow, Russian Federation (nastia@mitp.ru)
  • 2International Seismic Safety Organization, Arsita, Italy

We present an original method for determining the seismic impact outside the elliptical focal zone of an earthquake. The technique is based on the research of N.V. Shebalin (1927-1996) and generalizes the work of Russian and foreign seismologists, taking into account anisotropic concentration of seismic impact observed in nature in the direction of the source stretch. The macroseismic intensity is approximated by the function of magnitude, hypocentral distance and direction of the main axis of the focal zone taking into account the existing regional characteristics including information on active faults and earthquake focal mechanisms in the study area. The methodology can be used both in the operational assessment of damage from an earthquake immediately after its occurrence, and for the purposes of long-term general seismic zoning. The study was carried out as part of the Russian Federation State task of Scientific Research Works on "Seismic hazard assessment, development and testing of earthquake prediction methods" (No. 0143-2019-0006).

How to cite: Nekrasova, A. and Kossobokov, V.: Seismic intensity outside the earthquake focal zone, EGU General Assembly 2022, Vienna, Austria, 23–27 May 2022, EGU22-114, https://doi.org/10.5194/egusphere-egu22-114, 2022.