Sources of Cesium-137 Pollution of Bottom Sediments in the Kara  Sea Continental Catchment, Russia

Авторы: Semenkov I., Miroshnikov A.
Журнал: International Journal of Research in Environmental Science
Том: 1
Номер: 2
Год издания: 2015
Первая страница: 19
Последняя страница: 29
Аннотация: The aim of the present research is to evaluate the contribution of 137Cs global fallout to the contamination of bottom sediments in the mixing zone of the Ob fresh water and the Kara sea salt water. Sources of cesium-137 pollution were explored in the Kara sea continental catchment based on modeling and published data. The main sources are global radioactive fallout (24.8 – 25.2 1015Bq), Semipalatinsk nuclear test site (1.3 – 37.0 1015Bq), PA ‘Mayak’ (liquid radioactive wastes in the Techa river 1.9 – 13.0 1015Bq and Karachay lake 200 – 444 1015Bq, Kyshtym disaster 2.7 1015Bq), Krasnoyarsk mining and chemical industrial complex (0.01 – 0.11 1015Bq). Cesium-137 inflow to the Kara sea from the Ob river basin (including decay) is 0.04 – 0.44 1015Bq. Global fallout 137Cs runoff forms 48 – 73% of total 137Cs runoff. Cesium-137 runoff from the landscapes contaminated due to activity in the Semipalatinsk nuclear test site and PA ‘Mayak’ is 2 – 42% and 10 – 26% correspondingly.
Добавил в систему: Семенков Иван Николаевич

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