Change of sediment sources and hysteresis in suspended sediments due to surface decontamination in the Niida river catchment area affected by the Fukushima Daiichi nuclear power plant accident


Yuichi Onda1, Keisuke Taniguchi2, Yoshifumi Wakiyama3, Takaaki Kubo4 and Yuki Yamanaka4, (1)University of Tsukuba, Center for Research in Isotopes and Environmental Dynamics, Tsukuba, Japan, (2)Fukushima prefecture centre for environmental creation, Research Department, Miharu, Japan, (3)Fukushima University, Institute of Environmental Radioactivity, Fukushima, Japan, (4)University of Tsukuba, Colleage of Geoscience, Tsukuba, Japan