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J-GLOBAL ID：201501047163854076 Update date: Mar. 13, 2025

Yoshifumi Wakiyama

ワキヤマヨシフミ | Yoshifumi Wakiyama

Affiliation and department：
Job title：講師

Research field (2)： Environmental impact assessment , Environmental dynamics

Research keywords (4)：河川 , soil erosion , sediment dynamics , radiocesium

Research theme for competitive and other funds (10)：

2022 - 2025 Elucidation of the process of 137Cs discharge through rivers and diffusion into coastal waters
2021 - 2025 福島沿岸の放射性セシウム動態解明に向けた汚染懸濁粒子の作用機序(分担)
2017 - 2022 チェルノブイリ災害後の環境管理支援技術の確立(分担)
2018 - 2021 Long-term dynamics of radiocesium in aquatic ecosystems of Fukushima and Chernobyl contaminated areas
2017 - 2018 福島原発事故後の農地除染が河川流域内の土砂および137Cs動態に及ぼす影響

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Papers (47)：

Hyoe Takata, Yoshifumi Wakiyama, Toshihiro Wada. Kinetic evaluation for 137Cs desorption from riverine particles in seawater, and exploration of sorbent agents for fixation of the desorbed fraction. Journal of Environmental Radioactivity. 2025. 282. 107620-107620
Konoplev, A., Kurosawa, H., Wakiyama, Y., Igarashi, Y., Kanivets, V., Nanba, K. Experimental field study of basic mechanisms underlying dissolved 137Cs seasonal variations in ponds heavily contaminated after the Fukushima Daiichi nuclear power plant accident. Applied Geochemistry. 2025. 178. 106250-106250
Kurosawa, H., Wakiyama, Y., Wada, T., Nanba, K. Long-term 137Cs dynamics after decontamination of an urban pond in Fukushima Prefecture, Japan. Journal of Environmental Radioactivity. 2025. 281. 107573-107573
Chalaux-Clergue, T., Foucher, A., Chaboche, P.A., Hayashi, S., Tsuji, H., Wakiyama, Y., Sylvian, H., Vandromme, R., Cerdan, O., Nakao, A., et al. Impacts of farmland decontamination on 137Cs transfers in rivers after Fukushima nuclear accident: Evidence from a retrospective sediment core study. Science of the Total Environment. 2024. 947. 174546
Yoshifumi Wakiyama, Masumi Matsumura, Tetsuya Matsunaka, Shigekazu Hirao, Kimikazu Sasa. Riverine 129I dynamics during high-flow events on the Abukuma River in Fukushima. Applied Geochemistry. 2024. 173. 106134-106134

MISC (14)：

Konoplev, A, Wakiyama, Y, Wada, T, Igarashi, Y, Kanivets, V, Nanba, K. Chapter 4: Behavior of Fukushima-Derived Radiocesium in the Soil-Water Environment: Review. Behavior of Radionuclides in the Environment III Fukushima, Nanba et al. Ed. 2022. 33-68
Golosov, V, Konoplev,A, Wakiyama, Y, Ivanov, M, Komissarov, M. Chapter 8: Erosion and Redeposition of Sediments and Sediment-Associate Radiocesium on River Floodplains (the Niida River Basin and the Abukuma River as an Example). Behavior of Radionuclides in the Environment III Fukushima, Nanba et al. Ed. 2022. 97-133
Wakiyama, Y, Konoplev, A, Thoa, N, Niida, T, Tsukada, H, Takase, T, Nanba, K, Golosov, V, Zheleznyak, M. Chapter 9: Temporal variations in particulate and dissolved 137Cs activity concentrations in the Abukuma River during two high-flow events in 2018. Behaviour of Radionuclides in the Environment III- Fukushima Nanba et al. Eds. 2020. 153-175
Wakiyama Yoshifumi, Yuichi Onda, Kazuya Yoshimura. Cesium-137 activity concentration in suspended sediments in turbid water in paddy fields in Fukushima. CRiED, University of Tsukuba. 2020. 00013
Konoplev, A, Yoshihara, T, Wakiyama, Y. Time changes of dose equivalent rate above the soil surface as indication of natural attenuation processes. Proceedings of IAHS. 2019. 381. 121-126

Books (1)：

Education (4)：

2006 - 2010 University of Tsukuba Graduate School of Life and Environmental Sciences
2004 - 2006 Kyushu University Graduate School of Bioresource & Bioenvironment Sciences
2000 - 2004 Kyushu University Faculty of Agriculture
1997 - 2000 佐賀県立唐津東高等学校

Work history (6)：

2021/04 - 現在 Fukushima University Institute of Environmental Radioactivity Associate Professor
2015/04 - 2021/03 Fukushima University Institute of Environmental Radioactivity Senior Assistant Professor
2013/10 - 2015/03 University of Tsukuba Center for Research in Isotopes and Environmental Dynamics Researcher
2013/04 - 2013/09 University of Tsukuba Faculty of Life and Environmental Sciences Researcher
2010/09 - 2013/03 University of Tsukuba Terrestrial Environmental Research Center Researcher

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