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Accumulation of accident-derived radiocesium in lake and coastal sediments at 300-700 km distance from Fukushima area.
Ochiai, S; Miyata, Y; Nagao, S; Yamamoto, M; Murakami, T; Nishimura, S; Itono, T; Suzuki, T; Hamataka, K; Kawano, Y; Hamajima, Y; Kashiwaya, K.
Affiliation
  • Ochiai S; Low Level Radioactivity Laboratory, Institute of Nature and Environmental Technology, Kanazawa University, O 24, Wake, Nomi, Ishikawa 923-1224, Japan sochiai@ies.or.jp.
  • Miyata Y; Low Level Radioactivity Laboratory, Institute of Nature and Environmental Technology, Kanazawa University, O 24, Wake, Nomi, Ishikawa 923-1224, Japan.
  • Nagao S; Low Level Radioactivity Laboratory, Institute of Nature and Environmental Technology, Kanazawa University, O 24, Wake, Nomi, Ishikawa 923-1224, Japan.
  • Yamamoto M; Low Level Radioactivity Laboratory, Institute of Nature and Environmental Technology, Kanazawa University, O 24, Wake, Nomi, Ishikawa 923-1224, Japan.
  • Murakami T; Low Level Radioactivity Laboratory, Institute of Nature and Environmental Technology, Kanazawa University, O 24, Wake, Nomi, Ishikawa 923-1224, Japan.
  • Nishimura S; Low Level Radioactivity Laboratory, Institute of Nature and Environmental Technology, Kanazawa University, O 24, Wake, Nomi, Ishikawa 923-1224, Japan.
  • Itono T; Institute of Nature and Environmental Technology, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan.
  • Suzuki T; Low Level Radioactivity Laboratory, Institute of Nature and Environmental Technology, Kanazawa University, O 24, Wake, Nomi, Ishikawa 923-1224, Japan.
  • Hamataka K; Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan.
  • Kawano Y; Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan.
  • Hamajima Y; Low Level Radioactivity Laboratory, Institute of Nature and Environmental Technology, Kanazawa University, O 24, Wake, Nomi, Ishikawa 923-1224, Japan.
  • Kashiwaya K; Institute of Nature and Environmental Technology, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan.
Radiat Prot Dosimetry ; 167(1-3): 365-9, 2015 Nov.
Article in En | MEDLINE | ID: mdl-25953793
ABSTRACT
The accumulation of accident-derived radiocesium was investigated in nine water bodies located 300-700 km from the Fukushima Dai-ichi Nuclear Power Plant (FDNPP). (134)Cs from the accident was detected in surface sediment of five water bodies. The (134)Cs concentration, corrected to the time of the accident in 2011, was generally lower than that of (137)Cs, and its spatial pattern does not fully correspond to that of (137)Cs. These results suggest that radiocesium derived from both FDNPP and past global fallout can be separately observed and that the contributions of both sources are non-uniform within these sites. The (134)Cs inventory in surface sediments is smaller than its deposition, suggesting that almost all deposited (134)Cs remains within the catchment and/or a part has been discharged from the saline and brackish water bodies.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Radioactive Fallout / Water Pollutants, Radioactive / Lakes / Cesium Radioisotopes / Geologic Sediments / Fukushima Nuclear Accident Language: En Journal: Radiat Prot Dosimetry Year: 2015 Document type: Article
Fulltext
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Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Radioactive Fallout / Water Pollutants, Radioactive / Lakes / Cesium Radioisotopes / Geologic Sediments / Fukushima Nuclear Accident Language: En Journal: Radiat Prot Dosimetry Year: 2015 Document type: Article