Irkutsk. the 25th of October. INTERFAX-SIBERIA – Four tremors were recorded over the weekend in the Baikal rift zone in the Russian Federation and Mongolia, according to the website of the Baikal branch of the Department of the Geophysical Service of the Russian Academy of Sciences.
According to seismic stations, on Saturday at 16:00 Moscow time, an earthquake with an energy class of 9.8 and a magnitude of 3.2 occurred in the area of Lake Khubsugul in Mongolia; at 17:16 Moscow time – energy class 10.5 with a magnitude of 4.2 in the Eastern Sayan mountain system on the border of Mongolia and the Russian Federation, 150 km west of Khubsugul. In the village of Kungurtug (Republic of Tuva, RF), 3 points were felt.
On Sunday at 13:51 Moscow time, an earthquake with an energy class of 9.5 with a magnitude of 3 occurred in the Eastern Sayan on the territory of the Okinsky district of the Republic of Buryatia, the epicenter was 17 km north-east of the Orlik village; at 14:04 Moscow time – energy class 10.4 with a magnitude of 3.5 in the mountains north of Lake Baikal on the territory of the Muisky district of Buryatia. The epicenter was located 60 km east of the longest in the Russian Federation, the Severomuisky railway tunnel BAM.
The Baikal rift zone, where, according to scientists, there is a divergence of the Eurasian and Amur tectonic plates, has a length of about 2 thousand km. In its central part there is Lake Baikal, in the south – Lake Khubsugul (Mongolia), in the north – a mountainous region along which the Baikal-Amur Mainline (BAM) runs.
An increase in seismic activity has been recorded in the Baikal Rift since the fall of 2020, when the Bystrinskoye earthquake with a magnitude of 5.5 occurred in the south on September 22.