Problems of Engineering Seismology: article

Аnnotation: This paper reports the use of intensity attenuation equations for the territory of Turkey by modeling the impact of the most powerful destructive earthquake of February 6, 2023 in southeastern Turkey. The relevance of the study follows from the needed reliable estimates of possible loss due to earthquakes in order to aid the decision making process for the response and the proper choice of a search and rescue strategy for the heavily affected settlements. The paper has for its goal the calibration of the “Extremum” system models for the territory of southeastern Turkey. Our study is the first to analyze the seismic intensity attenuation equations obtained by researchers at different times with a view to their applicability to near real time loss assessment for strong events occurring in the area of study. We investigate how the results of seismic attenuation modeling are affected by macroseismic field orientation, the ellipse compression factor k, and the source parameters of a strong event as determined by different seismological agencies in the alert mode. Computer simulation was applied to the assessment of the possible impact due to the February 6, 2023 earthquake using the “Extremum” system developed with our participation. This paper provides preliminary results of modeling the impact of the Turkey earthquake, as well as an assessment of the convergence achieved by calculated and observed intensities for various input data options.