title: Local scale marine modelling of Fukushima releases. Assessment of water and sediment contamination and sensitivity to water circulation description.
abstract: The dispersion of (137)Cs released from Fukushima nuclear power plant to the sea after the March 11th 2011 tsunami has been studied using numerical models. The 3D dispersion model consists of an advection/diffusion equation with terms describing uptake/release reactions between water and seabed sediments. The dispersion model has been fed with daily currents provided by HYCOM and JCOPE2 ocean models. Seabed sediment (137)Cs patterns obtained using both current data set have been compared. The impact of tides and of atmospheric deposition has been evaluated as well. It has been also found that a 2-step kinetic model (two consecutive reversible reactions) for describing water/sediment interactions produces better results than a 1-step model (one single reversible reaction).
authors.affiliation: Dpt Fı´sica Aplicada I, ETSIA, Universidad de Sevilla, Ctra. Utrera, km 1, 41013 Sevilla, Spain. rperianez@us.es
authors.forename: R
authors.initials: R
authors.lastname: Periáñez
authors.forename: Kyung-Suk
authors.initials: KS
authors.lastname: Suh
authors.forename: Byung-Il
authors.initials: BI
authors.lastname: Min
mesh_terms: D002588:Cesium Radioisotopes / Q000032:analysis*; D062406:Fukushima Nuclear Accident; D019015:Geologic Sediments / Q000737:chemistry; D007564:Japan; D007700:Kinetics; D008956:Models, Chemical; D055848:Nuclear Power Plants; D011834:Radiation Monitoring / Q000379:methods*; D012623:Seawater / Q000737:chemistry*; D057192:Tsunamis; D014875:Water Pollutants, Radioactive / Q000032:analysis*
chemical_list: D002588:Cesium Radioisotopes; D014875:Water Pollutants, Radioactive