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Behavior of radiocesium in irrigation water in Hama-dori district, Fukushima Prefecture, Japan

 

 

 

Moono Shin1, Tomijiro Kubota2, Susumu Miyazu2, Sangyoon Lee3 and Takuro Shinano4

 

 

Abstract

 

The 2011 Great East Japan earthquake and tsunami led to dispersal of radionuclides into the surrounding area from the Tokyo Electric Power Company’s Fukushima Daiichi Nuclear Power Plant(FDNPP), evacuation instructions of residents were issued in some areas. Before agricultural activities can safely resume after this accident, it is nessessary to evaluate the dynamics of radiocesium in irrigation water in the area. 

In the present study, we monitored the concentrations of the different forms of radiocesium in irrigation water and analyzed its change over time and change between location of the concentration within 10–20-km zone from FDNPP at the Hama-dori district, Fukushima prefecture, Japan.

Our study yielded several key findings. First, at the investigated site, the concentration of total and dissolved radiocesium in the irrigation water tended to decline with the increasing distance toward the downstream. Second, concentration of radiocesium in the irrigation water during rain was tend to higher, found mainly in suspended particulate form and its concentration tended to decline over time. However, concentration of dissolved radiocesium was relatively unchanged.

It may be possible for farming to recommence in regions where decontamination of agricultural land has been completed, but continuous monitoring will be required.

 

Keywords: irrigation water, radiocesium, radionuclide, nuclear

 

テキスト ボックス: We thank the authorities of Ukedogawa LID and Tohoku regional administration office for their assistance during our research. The part in this work was financed in part by Japan Society for the Promotion of Science (JSPS) KAKENHI Grant No. 16H01791.

 


1 Preparatory Office for Faculty of Agriculture / Fukushima University / 1 Kanayagawa, Fukushima, Fukushima 960-1296 Japan.

2 Division of Regional Resources Engineering / Institute for Rural Engineering / NARO / 2-1-6 Kannondai, Tsukuba, Ibaraki 305-8609 Japan

3 Division of Hillside Horticulture Research / Western Region Agricultural Research Center / NARO / 2575 Zentsuji-machi, Zentsuji, Kagawa 765-0053 Japan

4 Agricultural Radiation Research Center / Tohoku Agricultural Research Center / NARO / 50 Harajuku-minami, Arai, Fukushima, Fukushima 960-2156 Japan

番号 タイトル
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57 帰還困難区域内の農業ため池における形態別放射性 Cs, 久保田富次郎、錦織達啓、申文浩、杉山行英、令和3年度農業農村工学会大会講演会、2021年9月
56 The impact of the nuclear power plant accident in Japan on agricultural and rural engineering, Moono Shin, Hiroshi Jinguji, The 2020 Korean Society of Agricultural Engineer Annual Conference in Web, 2020年10月
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51 Transfer of radiocesium from irrigation water to rice, Y. Suzuki, M. Shin(8番目), 他10名, 5th International Conference on Environmental Radioactivity, 2019年9月
50 灌漑水由来の懸濁態放射性セシウムの水田内動態 稲葉麟士,吉川夏樹,鶴田綾介,青山尚樹,上山直樹,原田直樹,宮津進,鈴木啓真,松原達也,申文浩,五明智夫,伊藤健太郎,野川憲夫 平成30年度農業農村工学会大会講演会 2019年9月
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48 L-Q式と連続濁度観測により算定された放射性セシウム流出量の比較 久保田 富次郎,申 文浩,李 相潤,錦織 達啓 水文・水資源学会2019年度研究発表会 2019年9月
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» Behavior of Radiocesium in Irrigation Water in Hama-dori District, Fukushima Prefecture, Japan, M. Shin, T. Kubota, S. Miyazu, S. Lee, T. Shinano, PAWEES & INWEPF International Conference 2018 in Nara, 2018年11月
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