Dispersion of artificial caesium-134 and −137 in the western North Pacific one month after the Fukushima accident
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- HONDA MAKIO C.
- Research Institute for Global Change, Japan Agency for Marine-Earth Science and Technology
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- AONO TATSUO
- Research Center for Radiation Protection, National Institute of Radiological Sciences
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- AOYAMA MICHIO
- Geochemical Research Department, Meteorological Research Institute
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- HAMAJIMA YASUNORI
- Low Level Radioactivity Laboratory, Kanazawa University
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- KAWAKAMI HAJIME
- Mutsu Institute for Oceanography, Japan Agency for Marine-Earth Science and Technology
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- KITAMURA MINORU
- Institute of Biogeoscience, Japan Agency for Marine-Earth Science and Technology
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- MASUMOTO YUKIO
- Research Institute of Global Change, Japan Agency for Marine-Earth Science and Technology
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- MIYAZAWA YASUMASA
- Research Institute of Global Change, Japan Agency for Marine-Earth Science and Technology
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- TAKIGAWA MASAYUKI
- Research Institute of Global Change, Japan Agency for Marine-Earth Science and Technology
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- SAINO TOSHIRO
- Research Institute for Global Change, Japan Agency for Marine-Earth Science and Technology
書誌事項
- タイトル別名
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- Dispersion of artificial caesium-134 and -137 in the western North Pacific one month after the Fukushima accident
- Dispersion of artificial cesium-134 and -137 in the western North Pacific one month after the Fukushima accident
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抄録
In March 2011, an accident at the Fukushima Daiichi nuclear power plant (FNPP-AC) was caused by the Tohoku earthquake and tsunami. Here we show the distribution of artificial caesium-134 and -137 (134Cs and 137Cs) in the western North Pacific one month after the FNPP-AC. In surface seawater, 137Cs concentrations were from several times to two orders of magnitude higher than before the FNPP-AC. 134Cs was also detected, and in many seawater samples the 134Cs/137Cs ratio was about 1. These findings indicate that radionuclides from the FNPP dispersed quickly in the western North Pacific. 134Cs and 137Cs concentrations in suspended solids and zooplankton at stations K2 and S1 were also one to two orders higher than before the accident. Numerical simulation results show that the higher caesium observed in the western North Pacific one month after the FNPP-AC was transported not only by diffusion and advection of seawater but also via the atmosphere as an aerosol.
収録刊行物
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- GEOCHEMICAL JOURNAL
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GEOCHEMICAL JOURNAL 46 (1), e1-e9, 2012
一般社団法人日本地球化学会
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詳細情報 詳細情報について
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- CRID
- 1390001204553614976
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- NII論文ID
- 10031146304
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- NII書誌ID
- AA00654975
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- ISSN
- 18805973
- 00167002
- http://id.crossref.org/issn/00167002
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- NDL書誌ID
- 024183954
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可