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Floodplain contamination as a proxy for long-term changes in Chernobyl-derived 137Cs in river basinстатья Исследовательская статья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 1 октября 2025 г.
- Авторы: Ivanov Maksim M., Golosov Valentin, Konoplev Alexei, Ivanova Nadezhda
- Журнал: Journal of Environmental Management
- Том: 391
- Год издания: 2025
- Издательство: Academic Press
- Местоположение издательства: United States
- Номер статьи: 126558
- DOI: 10.1016/j.jenvman.2025.126558
- Аннотация: This paper discusses the opportunities and challenges of using vertical distribution of Chernobyl-derived 137Cs in floodplain sediments to evaluate long-term changes of sediment-associated radionuclides in river system. It summarizes the results of more than a decade of research conducted in a lowland river (the Upa River) basin heavily contaminated after the Chernobyl accident. The overbank deposition of sediment-associated 137Cs on floodplains is determined by several factors, which must be considered when interpreting the observed contamination patterns, the most important being topography and hydrological regime, which control frequency of floodplain inundation during high water periods. Frequent floodings are conducive to a better record of 137Cs variations in sediment load. The 137Cs vertical distribution in floodplain sediments can be altered by certain disturbances, which makes its interpretation more difficult. The contribution of local sources to sediment load should be considered to avoid misinterpretation of 137Cs redistribution in upstream catchment. Downstream overbank deposition is impacted by management of river flow through artificial reservoirs, and therefore such floodplain sediments do not represent migration of 137Cs in upstream catchment. Nevertheless, investigation of floodplains downstream can provide valuable data about transport of clay and silt particles carrying pollutants.
- Добавил в систему: Иванов Максим Михайлович
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