FOCAL PARAMETERS OF THE OGUZ EARTHQUAKE SEPTEMBER 4, 2015 with ml = 5.9

Abstract

The article analyzes a strong 7-magnitude earthquake that occurred on September 4, 2015, at 04h 49m in the Oguz region. The epicentral field, as well as the distribution of sources in depth, was studied, and solutions to the mechanisms of the sources of the main shock and the most noticeable aftershock were constructed and analyzed. The epicenters of the Oguz earthquakes are
confined to the Arpa-Samur fault and can be interpreted as left-side shift deformation in the zone of geodynamic influence of the left-sided Arpa-Samur fault. A three-dimensional model of the aftershock field is constructed. The Fourier amplitude spectra were constructed from digital seismograms of the transverse waves of earthquakes, which made it possible to determine such
dynamic parameters as the angular frequency f0, seismic moment M0, the radius of the circular dislocation R, the discharged stress, and the average underthrust along the structure D. Based on the above said, The spectral ratios were calculated and an extension factor was found for 21 broadband digital stations.