Bottom sediment radioactivity of the six Caucasus lakes located in different altitude zones

Kuzmenkova, N.; Golosov, V.; Maxim, I.; Alexandrin, M.; Korneva, I.; Evgeny, G.; Alexandra, R.; Olga, B.

Авторы: Kuzmenkova Natalia, Golosov Valentin, Maxim Ivanov, Alexandrin Mikhail, Korneva Irina, Evgeny Grabenko, Alexandra Rozhkova, Olga Bykhalova
Журнал: Environmental Science and Pollution Research
Год издания: 2023
Издательство: Springer Nature
Местоположение издательства: Switzerland
DOI: 10.1007/s11356-023-25838-4
Аннотация: Natural and artificial radioactivity of bottom sediment in the six lakes of the Western and Central Caucasus have beenevaluated. It allowed to define the variation of sedimentation rate during the last 100–150 years using technogenic (137Cs)and natural (210Pb, 226Ra) radionuclides as a chronomarkers. The studied lakes are located in the contrasting geographicconditions, different orographic positions, and have different origin. The average annual precipitation in the area of each ofthe lakes has been detected to stay relatively constant during the 137Cs fallout period, while the air temperature has markedlyincreased during the last decades. The detected sedimentation rates are the indirect indicator of climate change in themountains. They are slightly decreasing owing to the increased protection of soil by vegetation cover in the lower altitudezone; in the upper zones, they are growing due to accelerated glacier retreat. The radioecological situation is estimated asnormal. High levels of 137Cs (33 kBq m−2) and 241Am (0.1 kBq m−2) in bottom sediments are attributed to the region-specificgeographical characteristics.
Добавил в систему: Кузьменкова Наталья Викторовна

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Bottom sediment radioactivity of the six Caucasus lakes located in different altitude zonesстатья

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