[1I01-07] Environmental Dynamics 1

[1I05] Investigation on distribution of radioactive substances in Fukushima

(5) Effect of decontamination activities in the river basin on Cs-137 transferred downstream

*Yuichi Onda¹ (1. Univ. of Tsukuba)

Keywords:Cs-137, suspended sediment, decontamination

A mechanical soil decontamination is an important tool for remediating contaminated soils. Remediation efforts following the Fukushima Daiichi disaster in the Niida River catchment increased soil erosion and downstream sediment with reduced 137Cs concentration but were restored quickly by rapid vegetation regeneration.