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Information message about a felt earthquake in the Kemerovo Region on August 12, 2021

A felt earthquake (moderate at the epicenter on the SHSI-17 scale) with M = 5 occurred on August 12, 2021 at 20:41 GMT (23:41 Moscow time) in the Kemerovo Region.

Parameters of the earthquake have been determined in the Alert Service (AS) of Information Processing Center (IPC) of Geophysical Survey of RAS in Obninsk with station data obtained from digital and analog seismic stations of Russia, countries of CIS and from abroad. Alert message on this earthquake has been delivered in 3 min after registration to the Ministry of Emergency of the Russian Federation (EMERCOM).

The red marker on the map shows the epicenter of the earthquake, the origin of which was located in the Prokopyevsky district of the Kemerovo Region at a depth of 15 km, 52 km N-NE of Prokopyevsk, 66 km N of Novokuznetsk, 146 km S of Kemerovo.

	Time in origin (GMT)	Latitude, degree	Longitude, degree	Depth, km	Stations number	Ms/N	mb/N	I0 (calculated)	GAP	Center
1	20:41:58.0	54.33	86.99	15.0	36		5.0/12	4.5-5	44	GS RAS Federal research center, Geophysical survey of Russian Academy of Sciences
2	20:41:56.0	54.27	87.0	10.0	137		4.9/38		44	CSEM European - Mediterranean seismological center
3	20:41:57.0	54.33	86.97	14.8	56		5.0/92		77	NEIC National Earthquakes Information Center of US Geological Service
4	20:41:56.2	54.2	87.2	1.0	41	5.4/15		7	93	ASGSR Altay-Sayan Regional Seismological Centre, Novosibirsk, Geophysical Survey, Russian Academy of Sciences

Fig. 1 presents fragments of records obtained from digital stations Zalesovo (∆ 1.3º), Jazator (∆ 4.6º), Kurchatov (∆ 6.3º), Makanchi Array (∆ 8.1º), Talaya (∆ 10.4º). Fig. 2 presents fragments of records obtained from digital stations Ulaanbaatar (∆ 14.1º), Norilsk (∆ 15.1º), Arti (∆ 16.3º), Kirov (∆ 21º), Yakutsk (∆ 23.4º).

Image 1

Image 2

According to GS RAS this earthquake was felt in Prokopyevsk with intensity of 4 MSK, in Novokuznetsk with intensity of 3 MSK and Kemerovo with intensity of 2 MSK. Fig. 1 presents the map obtained from Operative log of Altai-Sayan branch of GS RAS.

Image 1

Click here to view detailed macroseismic data (DyfitWeb service)

This earthquake occurred 55 km east of the Bachat earthquake June 18, 2013 in the Kemerovo Region with a magnitude of M = 5.2. The earthquake was felt in the Kemerovo Region and in neighboring regions. The maximum intensity of 7 MSK was felt in Bachatsky and Starobachaty. In the villages closest to the epicenter, the destruction of furnaces, the fall of chimneys, shedding of plaster and the formation of cracks in the walls of panel and brick buildings were observed.

Bibliography
Еманов А.Ф., Еманов А.А., Фатеев А.В., Лескова Е.В., Шевкунова Е.В., Подкорытова В.Г. Эпицентральная область Бачатского землетрясения 18.06.2013 г. с М=5.1 (Кузбасс) в 2013-2014 гг. // Землетрясения России в 2013 году. - 2015. - C. 103–108.