HYDROGEOCHEMICAL EARTHQUAKE PRECURSOR IN THE SOUTHERN BAIKAL REGION
R.M. Semenov1,2, V.V. Kashkovskii2, M.N. Lopatin3
1Institute of the Earth's Crust, Siberian Branch of the Russian Academy of Sciences, ul. Lermontova 128, 664033, Russia
2Irkutsk State University of Railway Transport, ul. Chernyshevskogo 15, 664074, Irkutsk, Russia
3Sosnovgeologiya Baikal Branch of the Urangeologorazvedka Federal State Unitary Geological Enterprise, ul. Gogolya 53, Irkutsk, 664039, Russia
Keywords: Groundwater, concentration of dissolved helium, correlation coefficients, integrated indicator functions, earthquake focus, earthquake precursor, southern Baikal region
Abstract
This paper presents the results of study of seismically induced variations in helium concentration in groundwater in the southern Baikal region. Unlike previous studies, data were obtained not only in Baikal deepwater but also in artesian wells in the southern Baikal region. The correlation coefficients between the data obtained at these observation stations, indicator functions, and an integrated indicator functions were calculated. They provide an objective assessment of time variations in concentrations due to changes in the stress-strain state of the Earth’s crust related to earthquake preparation and hence permit one to predict the time of an earthquake.
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