Land use types control solid wash-off rate and entrainment coefficient of Fukushima-derived Cs, and their time dependence

Wakiyama, Yoshifumi*; Onda, Yuichi*; Yoshimura, Kazuya; Igarashi, Yasunori*; Kato, Hiroaki*

Journal of Environmental Radioactivity, 210, p.105990_1 - 105990_12, 2019/12

https://doi.org/10.1016/j.jenvrad.2019.105990

Temporal changes of radiocesium in irrigated paddy fields and its accumulation in rice plants in Fukushima

Yang, B.*; Onda, Yuichi*; Wakiyama, Yoshifumi*; Yoshimura, Kazuya; Sekimoto, Hitoshi*; Ha, Y.*

Environmental Pollution, 208(Part B), p.562 - 570, 2016/01

https://doi.org/10.1016/j.envpol.2015.10.030

Radiocesium wash-off associated with soil erosion from various land uses after the Fukushima Dai-ichi NPP accident

Wakiyama, Yoshifumi*; Onda, Yuichi*; Yoshimura, Kazuya; Kato, Hiroaki*

no journal, , 

Slope-scale Cs-137 wash-off processes estimated with erosion plot observations and laser-scanning

Wakiyama, Yoshifumi*; Manome, Ryo*; Onda, Yuichi*; Yoshimura, Kazuya

no journal, , 

no abstracts in English

Land use controls fate and transport of radionuclides in Fukushima in the terrestial environment

Onda, Yuichi*; Taniguchi, Keisuke*; Wakiyama, Yoshifumi*; Yoshimura, Kazuya; Smith, H.*; Blake, W.*; Iwagami, Sho*; Kato, Hiroaki*

no journal, , 

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.*; Sakuma, Kazuyuki; Igarashi, Yasunori*; Wakiyama, Yoshifumi*; Konoplev, A.*; Namba, Kenji*

no journal, , 

We developed physically-based watershed models based on the distributed hydrological-sediment transport model. The model implementation for the experimental plots in Fukushima prefecture was conducted for particulate Cs transport. Also, we developed model that combines the watershed empirical models based on the washing-out coefficient approach and GIS data. The model was tested on the basis of the measurements of Cs concentration in Abukuma river and validated also on the basis of the data sets of radionuclide transport in the Pripyat and Dnieper rivers.