Abstract
The analysis of distribution of uranium concentrations in the water of conjugated components of Baikal ecosystem in the water of Baikal, tributaries, Angara headwaters and in underground water from the wells on Olkhon island and in south-western coastal part of Baikal has been carried out. The significant differences of the maximum uranium contents in the ground water of the Baikal and its inflows and the close average and median values of the element in the water of the Baikal and the Angara River flowing into it were determined. The data on uranium distribution fix the influence of geological and geochemical peculiarities of the structure of the Baikal ecosystem and its surroundings and the climatic and catastrophic (earthquakes, seismo-geodynamic activation etc.) events which take place in the region. An analysis of changes in the concentration of uranium in the water of Lake Baikal in relation to the seismic process was carried out on the example of strong earthquakes (M ≥ 5) in the region of Lake Baikal.
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