LOCAL DEFORMATION AND RHEOLOGICAL PARAMETERS BY MEASUREMENTS IN TALAYA STATION GALLERY (BAIKAL REGION)
https://doi.org/10.5800/GT-2015-6-2-0179
Abstract
Tilt measurements have been taken in the underground gallery at Talaya Seismological Station for almost three decades, from March 1985 till 2014. Based on such data, deformation curves were constructed and analysed in the frame of elastic and viscous-elastic models of the geological medium. From estimated annual deformation rates, it became possible to reveal deformation cycles ranging from 3 to 18 years with amplitudes up to 5 arc-seconds (2·10–5). For the bedrock in the Talaya stream valley, the elastic modulus was estimated at 20 GPa. In frame of the Kelvin viscoelastic model, the apparent viscosity of the medium was estimated at 1019 Pa·sec by deformation delay curve for 1989–2014 epoch. Observed vertical rates were used to estimate the size of the studied area (from 0.1 km to 6.0 km). The values estimated in our experimental investigation are used in a wide range of geophysical studies: modelling tectonic, co-seismic and post-seismic processes.
About the Authors
V. Yu. Timofeev
Trofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch of RAS, Novosibirsk, Russia
Russian Federation
Russian Federation
Doctor of Physics and Mathematics, Head of Laboratory
A.A. Trofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch of RAS
3 Akademika Koptyuga Prosp., Novosibirsk 630090, Russia
Tel.: (383)3356442
O. K. Masalsky
Baikal Branch of Geophysical Survey, Siberian Branch of RAS, Irkutsk, Russia
Russian Federation
Russian Federation
Director Baikal Branch of Geophysical Survey, Siberian Branch of RAS
128 Lermontov street, Irkutsk 664033, Russia
Tel.: 8(3952)428782
D. G. Ardyukov
Trofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch of RAS, Novosibirsk, Russia
Russian Federation
Russian Federation
Senior Researcher
A.A. Trofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch of RAS
3 Akademika Koptyuga Prosp., Novosibirsk 630090, Russia
Tel.: (383)3356442
A. V. Timofeev
Trofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch of RAS, Novosibirsk, Russia
Russian Federation
Russian Federation
Engineer A.A. Trofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch of RAS
3 Akademika Koptyuga Prosp., Novosibirsk 630090, Russia
Tel.: (383)3356442
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For citations:
Timofeev V.Yu., Masalsky O.K., Ardyukov D.G., Timofeev A.V. LOCAL DEFORMATION AND RHEOLOGICAL PARAMETERS BY MEASUREMENTS IN TALAYA STATION GALLERY (BAIKAL REGION). Geodynamics & Tectonophysics. 2015;6(2):241–253. (In Russ.) https://doi.org/10.5800/GT-2015-6-2-0179
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