Earthquake in Tuva (27.12.2011, ML=6.7) and aftershocks

Vestnik Otdelenia nauk o Zemle RAN VOL. 4, NZ2002, doi:10.2205/2012NZ000112, 2012

Earthquake in Tuva (27.12.2011, ML=6.7) and aftershocks

A. F. Emanov ^1,2, A. A. Emanov^1,2, E. V. Leskova^1,2, V. S. Seleznev^2,3, A. G. Filina¹

¹ Altay-Sayan Regional Seismological Center, Geophysical Survey of the Siberian Branch of RAS, Novosibirsk, Russia

² Institute of Petroleum Geology and Geophysics of the Siberian Branch of RAS, Novosibirsk, Russia

³ Geophysical Survey of the Siberian Branch of RAS, Novosibirsk, Russia

Abstract

The 27.12.2011 Tuva earthquake, ML=6.7, was one of the strongest earthquakes in the Republic of Tuva. Seismicity of the Academician Obruchev Range over the last 50 years was weak, and the epicenter zone practically non-seismic. At that, according to the seismic-geological data, the region's potential magnitude was estimated 6.5-7. In the OSR-97 charts the Kaakhem Fault, where the earthquake occurred, was shown as a lineament with maximal possible magnitude 7. The calculations showed that the earthquake's intensity in the epicenter was 8. As a whole the earthquake seismic effect on villages and towns didn't exceed the normal values according to the seismic zoning maps.

Received 17 February 2011; published 29 February 2012.

Citation: Emanov A. F., A. A. Emanov, E. V. Leskova, V. S. Seleznev, A. G. Filina (2012), Earthquake in Tuva (27.12.2011, ML=6.7) and aftershocks, Vestn. Otd. nauk Zemle, 4, NZ2002, doi:10.2205/2012NZ000112.