Temporal variation of monthly 137Cs deposition observed in Japan: Effects of the Fukushima Daiichi nuclear power plant accident

被引：23
|
作者：
Hirose, Katsumi [1 ,2 ]
机构：
[1] Sophia Univ, Dept Mat & Life Sci, Fac Sci & Technol, Chiyoda Ku, Tokyo 1028554, Japan
[2] Saitama Univ, Geosphere Res Inst, Sakura Ku, Saitama 3388570, Japan
来源：
APPLIED RADIATION AND ISOTOPES | 2013年 / 81卷
关键词：
Fukushima Daiichi NPP; Cs-137; Deposition; Spatial distribution; Temporal change; Resuspension; RADIONUCLIDES; I-131;
D O I：
10.1016/j.apradiso.2013.03.076
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Monthly Cs-137 depositions from March 2011 to April 2012 were reported at monitoring stations within about 250 km from the Fukushima Daiichi NPP. The monthly Cs-137 deposition at each station decreased with apparent half-lives of 11-14 d during the period from March to June 2011, and after July 2011 its decrease rates changed. Second peaks of the monthly Cs-137 deposition occurred in February-April 2012, which may be supported by resuspension of Cs-137 bearing particles. (C) 2013 Elsevier Ltd. All rights reserved,
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页码：325 / 329
页数：5
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