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Low 134Cs/137Cs ratio anomaly in the north-northwest direction from the Fukushima Dai-ichi Nuclear Power Station
https://repo.qst.go.jp/records/48917
https://repo.qst.go.jp/records/48917b95ed2ae-5ddc-45e0-bc2d-096fd3688924
Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2018-05-08 | |||||
タイトル | ||||||
タイトル | Low 134Cs/137Cs ratio anomaly in the north-northwest direction from the Fukushima Dai-ichi Nuclear Power Station | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
アクセス権 | ||||||
アクセス権 | metadata only access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
著者 |
Kobayashi, Shingo
× Kobayashi, Shingo× Shinomiya, Takayuki× Ishikawa, Takahiro× Imaseki, Hitoshi× Iwaoka, Kazuki× Kitamura, Hisashi× Kodaira, Satoshi× Kobayashi, Keisuke× Oikawa, Masakazu× Miyaushiro, Norihiro× Takashima, Yoshio× Uchihori, Yukio× 小林 進悟× 四野宮 貴幸× 石川 剛弘× 今関 等× 岩岡 和輝× 北村 尚× 小平 聡× 小林 圭輔× 及川 将一× 宮後 法博× 高島 良生× 内堀 幸夫 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | A low 134Cs/137Cs ratio anomaly in the north-northwest (NNW) direction from the Fukushima Dai-ichi Nuclear Power Station (FDNPS) is identified by a new analysis of the 134Cs/137Cs ratio dataset which we had obtained in 2011e2015 by a series of car-borne surveys that employed a germanium gamma-ray spectrometer. We found that the 134Cs/137Cs ratio is slightly lower (0.95, decay-corrected to March 11, 2011) in an area with a length of about 15 km and a width of about 3 km in the NNW direction from the FDNPS than in other directions from the station. Furthermore, the area of this lower 134Cs/137Cs ratio anomaly corresponds to a narrow contamination band that runs NNW from the FDNPS and it is nearly parallel with the major and heaviest contamination band in the west-northwest. The plume trace with a low 134Cs/137Cs ratio previously found by other researchers within the 3-km radius of the FDNPS is in a part of the area with the lower 134Cs/137Cs ratio anomaly that we found. Our result suggests that this lower 134Cs/137Cs ratio anomaly is the area which was contaminated before March 13, 2011 (UTC) in association with the hydrogen explosion of Unit 1 on March 12, 2011 at 06:36 (UTC) and it was less influenced by later subsequent plumes. | |||||
書誌情報 |
Journal of Environmental Radioactivity 巻 178-179, p. 84-94, 発行日 2018-05 |
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出版者 | ||||||
出版者 | ELSEVIER | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0265-931X | |||||
PubMed番号 | ||||||
識別子タイプ | PMID | |||||
関連識別子 | PubMed-ID | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1016/j.jenvrad.2017.07.023 |