title: Radiocesium monitoring in Indonesian waters of the Indian Ocean after the Fukushima nuclear accident.
abstract: As data on anthropogenic radionuclide concentrations (i.e., (134)Cs and (137)Cs) in Indonesian marine environments including the Indian Ocean are scarce, offshore monitoring has been performed in the West Sumatra and South Java Seas. The activity concentration of (137)Cs ranges from below minimum detectable activity (MDA) to 0.13Bqm(-3) in the surface seawater of the South Java Sea and from lower than MDA to 0.28Bqm(-3) in the surface seawater of the West Sumatra Sea. The concentrations of (137)Cs in the surface seawater of the West Sumatra and South Java Seas are lower than the estimation of (137)Cs concentration in the subsurface waters owing to the input of the North Pacific Ocean via the Indonesian Throughflow (ITF). The concentrations of (134)Cs in the sampling locations were lower than MDA. These results have indicated that these Indonesian marine waters have not yet been influenced by the Fukushima radioactive release.
authors.affiliation: Marine Radioecology Group, Center for Technology of Radiation Safety and Metrology, National Nuclear Energy Agency, Jl. Lebak Bulus Raya No. 49, Kotak Pos 7043 JKSKL, Jakarta Selatan 12070, Indonesia. Electronic address: henis@batan.go.id.
authors.forename: Heny
authors.initials: H
authors.lastname: Suseno
authors.affiliation: Technology Center for Marine Survey, Agency for Assessment and Application of Technology, Jakarta, Indonesia.
authors.forename: Ikhsan Budi
authors.initials: IB
authors.lastname: Wahono
authors.affiliation: Department of Marine Science, Diponogoro University, Semarang, Indonesia.
authors.lastname: Muslim
mesh_terms: D002588:Cesium Radioisotopes / Q000032:analysis*; D062406:Fukushima Nuclear Accident; D019156:Indian Ocean; D007214:Indonesia; D010140:Pacific Ocean; D011834:Radiation Monitoring / Q000379:methods*; D012623:Seawater / Q000737:chemistry*; D014875:Water Pollutants, Radioactive / Q000032:analysis*
chemical_list: D002588:Cesium Radioisotopes; D014875:Water Pollutants, Radioactive
keywords: Fukushima accident; Indonesian Throughflow; Radiocesium