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Two-years trend of monthly 137Cs deposition observed in Kanto and south Tohoku areas, Japan: effects of the Fukushima Dai-ichi nuclear power plant accident

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Abstract

To elucidate deposition behavior of the FDNPP-derived radionuclides after the major emission in March 2011, two-years trends (March 2011 to April 2013) of the monthly 137Cs deposition at monitoring stations of Kanto and south Tohoku regions were examined. The higher 137Cs depositions within about 300 km of the FDNPP than pre-Fukushima level were still observed until April 2013. The monthly 137Cs deposition showed marked winter peaks in 2012 and 2013 at the Futaba station, about 5 km of the FDNPP. The monthly 137Cs deposition generally decreased with increasing distance from the FDNPP.

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Authors and Affiliations

  1. Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioicho, Chiyodaku, Tokyo, 102-8554, Japan

    Katsumi Hirose

  2. Geosphere Research Institute, Saitama University, 255 Shimo-okubo, Sakura-Ku, Saitama, 338-8570, Japan

    Katsumi Hirose

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  1. Katsumi Hirose
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Correspondence to Katsumi Hirose.

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Hirose, K. Two-years trend of monthly 137Cs deposition observed in Kanto and south Tohoku areas, Japan: effects of the Fukushima Dai-ichi nuclear power plant accident. J Radioanal Nucl Chem 303, 1327–1329 (2015). https://doi.org/10.1007/s10967-014-3480-8

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  • DOI: https://doi.org/10.1007/s10967-014-3480-8

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