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Comparison between modelling and measurement of marine dispersion, environmental half-time and 137Cs inventories after the Fukushima Daiichi accident ArchiMer
Du Bois, Pascal Bailly; Garreau, Pierre; Laguionie, Philippe; Korsakissok, Irene.
Contamination of the marine environment following the accident at the Fukushima Daiichi nuclear power plant (FDNPP) represents the most important influx of artificial radioactivity released into the sea ever recorded. The evaluation, in near real time, of the total amount of radionuclide released at sea and of the residence time in coastal waters were ones of challenges for nuclear authorities during this event. In the framework of a crisis situation, a numerical hydrodynamical model has been built and used ‘as is’. The concomitant use of this numerical model and in situ data allows the comparison of the simulated and measured environmental half-times. A tuning of the wind drag coefficient has been nevertheless necessary to reproduce the evolution of...
Tipo: Text Palavras-chave: Fukushima accident; Caesium 137; Coastal modelling; Environmental half-time; Radionuclide; Pacific Ocean.
Ano: 2014 URL: http://archimer.ifremer.fr/doc/00173/28390/26719.pdf
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Development of emergency response tools for accidental radiological contamination of French coastal areas ArchiMer
Duffa, Celine; Du Bois, Pascal Bailly; Caillaud, Matthieu; Charmasson, Sabine; Couvez, Celine; Didier, Damien; Dumas, Franck; Fievet, Bruno; Morillon, Mehdi; Renaud, Philippe; Thebault, Herve.
The Fukushima nuclear accident resulted in the largest ever accidental release of artificial radionuclides in coastal waters. This accident has shown the importance of marine assessment capabilities for emergency response and the need to develop tools for adequately predicting the evolution and potential impact of radioactive releases to the marine environment. The French Institute for Radiological Protection and Nuclear Safety (IRSN) equips its emergency response centre with operational tools to assist experts and decision makers in the event of accidental atmospheric releases and contamination of the terrestrial environment. The on-going project aims to develop tools for the management of marine contamination events in French coastal areas. This should...
Tipo: Text Palavras-chave: Decision support; Marine; Modelling; Radioecology; Nuclear accident.
Ano: 2016 URL: http://archimer.ifremer.fr/doc/00270/38118/36480.pdf
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