Marine dispersion assessment of 137Cs released from the Fukushima nuclear accident
Radionuclides were released into the atmosphere and ocean due to an accident in the Fukushima Daiichi Nuclear Power Plant (NPP) in March 2011. Numerical simulations were carried out to evaluate the distribution of 137Cs in the ocean considering both direct releases to the sea and deposition from the...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2013 |
| País: | España |
| Institución: | Universidad de Sevilla (US) |
| Repositorio: | idUS. Depósito de Investigación de la Universidad de Sevilla |
| OAI Identifier: | oai:idus.us.es:11441/135756 |
| Acceso en línea: | https://hdl.handle.net/11441/135756 https://doi.org/10.1016/j.marpolbul.2013.05.008 |
| Access Level: | acceso abierto |
| Palabra clave: | Numerical simulation Direct release Atmospheric deposition Fukushima-Daiichi |
| Sumario: | Radionuclides were released into the atmosphere and ocean due to an accident in the Fukushima Daiichi Nuclear Power Plant (NPP) in March 2011. Numerical simulations were carried out to evaluate the distribution of 137Cs in the ocean considering both direct releases to the sea and deposition from the atmosphere as source terms. A significant amount of atmospheric deposition occurred on the sea surface in the northeast direction from the Fukushima NPP, due to westerly winds and precipitations on March 15–31, 2011. In a previous study using local scale modeling, no significant differences in resulting 137Cs patterns in water and sediments with and without atmospheric deposition were found. However, this new research, on a regional scale, has pointed out meaningful differences in seabed sediment radionuclide concentrations in the Fukushima northeast area with and without atmospheric deposition. |
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