Open AccessSTRONG EARTHQUAKES in the NORTH of the LAKE BAIKAL REGION (Mw=4.6–4.7) in 2015
Author(s) -
Ya. B. Radziminovich,
В. И. Мельникова,
Н. А. Гилева,
A. I. Filippova
Publication year - 2021
Publication title -
zemletrâseniâ severnoj evrazii v ... godu
Language(s) - English
Resource type - Journals
ISSN - 1818-6254
DOI - 10.35540/1818-6254.2021.24.27
Subject(s) - seismology , geology , epicenter , seismic hazard , seismic moment , zoning , fault (geology) , law , political science
The paper considers three relatively strong earthquakes that occurred in 2015 in the northern Lake Baikal region: July 7 Upper Akuli earthquake (Mw=4.6) with the epicenter at the headwaters of the Akuli River, and September 25 Gulonga-I (Mw=4.7) and December 13 Gulonga-II earthquakes (Mw=4.6) with the epicenters near the mountain lakes Gulonga. Instrumental and macroseismic data on these seismic events are reported. A seismic moment tensor, calculated from surface wave records, shows normal fault focal mechanisms for Upper Akuli and Gulonga-II earthquakes and strike-slip movements in the source of the Gulonga-I seismic event. The results obtained could be used in further studies of seismic zoning and seismic hazard assessment in the northern Lake Baikal region.