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論文

Behavior of accidentally released radiocesium in soil-water environment; Looking at Fukushima from a Chernobyl perspective

Konoplev, A.*; Golosov, V.*; Laptev, G.*; 難波 謙二*; 恩田 裕一*; 高瀬 つぎ子*; 脇山 義史*; 吉村 和也

Journal of Environmental Radioactivity, 151(Part 3), p.568 - 578, 2016/01

 被引用回数:75 パーセンタイル:92.35(Environmental Sciences)

Comparative analysis is provided for radiocesium wash-off parameters and Kd between suspended matter and water in rivers and surface runoff on Fukushima and Chernobyl contaminated areas for the first years after the accidents. It was found that radiocesium distribution coefficient in Fukushima rivers is essentially higher than those in Chernobyl. This can be associated with two factors: a higher RIP of samples in Fukushima and the presence of water insoluble glassy particles. It was found also that dissolved wash-off coefficients for Fukushima catchments are lower than those in Chernobyl. Particulate wash-off coefficients are comparable for Fukushima and Chernobyl. The radiocesium migration in undisturbed forest and grassland soils at Fukushima has been shown to be faster than those in Chernobyl. Investigation and analysis of radiocesium distribution in soils of Niida river catchment revealed accumulation of contaminated sediments on its floodplain.

口頭

Distributed modeling of radionuclide washing out from the watersheds in solute and with suspended sediments; Case studies Abukuma River, Fukushima Prefecture and Pripyat-Dnieper river system, Ukraine

Zheleznyak, M.*; Pylypenko, O.*; Kivva, S.*; 佐久間 一幸; 五十嵐 康記*; 脇山 義史*; Konoplev, A.*; 難波 謙二*

no journal, , 

物理モデルベースの水、土砂輸送を考慮した流域モデルを開発し、福島県内の試験プロットで懸濁態$$^{137}$$Cs流出について試計算を実施した。また、GISベースで経験的な流出率を用いる流域モデルを開発した。開発したモデルを用いて福島県阿武隈川で$$^{137}$$Csについて試計算を実施し、ウクライナのPripyat川とDnieper川を対象に、放射性核種輸送について妥当性を検証した。

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