Aftershock process of Tuva earthquake of 27.12.2011
Category: 14-1
UDC 550.34
S.V. Baranov(1), V.I. German(2), V.G. Oseev(2)
(1) Kola Branch of Geophysical Survey of Russian Academy of Sciences, Apatity, Russia
(2) Krasnoyarsk Research Institute of Geology and Minerals, Krasnoyarsk, Russia
Abstract
The paper considers an aftershock process of the Tuva earthquake occurred on 27.12.2011 in the Altai-Sayan Plicate Area (ASPA) and provides some results of macroseismic inspection. To reveal peculiarities and similarities, we considered aftershock sequences of thee Bussingolosk and Ureg-Nursk earthquakes occurred before in ASPA. Based on the modeling by means of relaxation models and trigger seismicity models some general properties and specialties of the three aftershock processes were revealed. It was shown that forecasting the considered aftershock sequences based on the data for the previous times has an adequate accuracy. This approach can be directly used in the work of seismic monitoring centers for estimating aftershock activity after a strong earthquake.
Keywords: Altai-Sayan Fold System, the Tuva earthquake, aftershocks, modeling and forecasting aftershock processes.
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