Radionuclides in the Ecosystem of Lake Tygish in the Zone of the Eastern Ural Radioactive Trace |
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Authors: | Trapeznikov A V Yushkov P I Nikolkin V N Trapeznikova V N Chebotina M Ya Ekidin A A |
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Institution: | (1) Institute of Plant and Animal Ecology, Ural Division, Russian Academy of Sciences, ul. Vos'mogo Marta 202, Yekaterinburg, 620144, Russia |
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Abstract: | The radioecological situation in Lake Tygish is described. The lake is situated on the central axis of the Eastern Ural Radioactive Trace (EURT), which was formed after the nuclear accident in the Southern Urals in 1957. The distributions of 90Sr and 137Cs among the main components of the water body and the results of the measurement of tritium concentration in the water are presented. Mathematical models are described that have made it possible to estimate changes in the concentrations of radionuclides and their amounts accumulated in the water and bottom sediments of the lake during the long period after the accident and to predict the development of the radioecological situation in the lake until 2057. Based on the mathematical models, more accurate data on the initial ecological situation in the lake in the year of the accident have been obtained. |
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Keywords: | radionuclides Eastern Ural Radioactive Trace water body water bottom sediments aquatic plants fish accumulation coefficients |
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