期刊
JOURNAL OF ENVIRONMENTAL RADIOACTIVITY
卷 139, 期 -, 页码 66-77出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jenvrad.2014.09.013
关键词
Baltic Sea; Cs-137; Dispersion; Sediment; Box models; Hydrodynamic models
资金
- EU FP7 EURATOM project PREPARE: Innovative integrative tools and platforms to be prepared for radiological emergencies and post-accident response in Europe [323287]
Four radionuclide dispersion models have been applied to simulate the transport and distribution of Cs-137 fallout from Chernobyl accident in the Baltic Sea. Models correspond to two categories: box models and hydrodynamic models which solve water circulation and then an advection/diffusion equation. In all cases, interactions of dissolved radionuclides with suspended matter and bed sediments are included. Model results have been compared with extensive field data obtained from HELCOM database. Inventories in the water column and seabed, as well as Cs-137 concentrations along 5 years in water and sediments of several sub-basins of the Baltic, have been used for model comparisons. Values predicted by the models for the target magnitudes are very similar and close to experimental values. Results suggest that some processes are not very relevant for radionuclide transport within the Baltic Sea, for instance the roles of the ice cover and, surprisingly, water stratification. Also, results confirm previous findings concerning multi-model applications. (C) 2014 Elsevier Ltd. All rights reserved.
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