title: Marine dispersion assessment of 137Cs released from the Fukushima nuclear accident.
abstract: 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 (137)Cs 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 (137)Cs 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.
authors.affiliation: Nuclear Environment Safety Research Division, Korea Atomic Energy Research Institute, Daedeok-Daero 989-111, Yuseong, Daejeon 305-600, Republic of Korea.
authors.forename: Byung-Il
authors.initials: BI
authors.lastname: Min
authors.forename: Raul
authors.initials: R
authors.lastname: Periáñez
authors.forename: In-Gyu
authors.initials: IG
authors.lastname: Kim
authors.forename: Kyung-Suk
authors.initials: KS
authors.lastname: Suh
mesh_terms: D002588:Cesium Radioisotopes / Q000032:analysis*; D007564:Japan; D011834:Radiation Monitoring; D018788:Radioactive Hazard Release; D012623:Seawater / Q000737:chemistry; D014875:Water Pollutants, Radioactive / Q000032:analysis*
chemical_list: D002588:Cesium Radioisotopes; D014875:Water Pollutants, Radioactive