Open AccessSPECTRAL and FOCAL PARAMETERS of NORTHERN CAUCASUS EARTHQUAKES in 2015
Author(s) -
L. Malyanova,
И. П. Габсатарова,
Natalia Ponomareva
Publication year - 2021
Publication title -
zemletrâseniâ severnoj evrazii v ... godu
Language(s) - English
Resource type - Journals
ISSN - 1818-6254
DOI - 10.35540/1818-6254.2021.24.23
Subject(s) - seismology , geology , amplitude , spectral line , geodesy , focal mechanism , physics , induced seismicity , optics , astronomy
The dynamic sources parameters of 29 earthquakes of the North Caucasus for 2015 with KR=9.5–11.4, determined from 38 S-wave amplitude spectra are analyzed. Records of four regional digital seismic stations, “Anapa”, “Kislovodsk”, “Makhachkala” and “Sochi”, located no more than 300 km from the sources are used. For the environment near these stations, the values of the frequency-dependent Q-factor, necessary for recalculating the station spectra to the focal ones. In 2015, the majority of earthquakes studied were located in the Eastern Caucasus. The dependence between log M0 and KR for this zone was constructed using together with the data for 2010–2014.