Development of the chemical characteristics of ground water at the delta of the Selenga River |
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| Authors: | A M Plyusnin L B Kislitsina D I Zhambalova E G Peryazeva Yu N Udodov |
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| Institution: | (1) Geological Institute, Siberian Branch, Russian Academy of Sciences, ul. M. Sakh’yanovoi 6a, Ulan-Ude, 670047, Buryat Republic, Russia;(2) OAO Selengeo, Orongoi, Ivolginskii district, 671052 Buryat Republic, Russia;(3) Vinogradov Institute of Geochemistry, Siberian Branch, Russian Academy of Sciences, ul. Favorskogo 1a, Irkutsk, 664033, Russia |
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| Abstract: | This paper addresses some specific features of the formation of atmospheric precipitation and soil and ground waters in the Ust’-Selenga depression on the eastern coast of Lake Baikal, where the delta of the Selenga River supplying about 50% of water into the lake has been formed. It was shown that a reducing environment was formed within this region under near-surface conditions in the zone of active water exchange, where waters with high concentrations of organic matter, ammonium, iron, manganese, nitrate, zinc, and cadmium were observed. The high contents of these components in the ground waters of the depression are related to the occurrence of both natural and anthropogenic processes. It was found that the natural hydrogeologic systems of the Ust’-Selenga depression are affected by a negative impact related to the transboundary atmospheric transport of industrial wastes discharged tens to hundreds of kilometers from its boundaries. |
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