[3Q14-17] Environmental Radioactivity 4

[3Q15] Investigation on distribution of radioactive substances in Fukushima

(12)Declining trend of dissolved cesium-137 of stream water at small forested catchment

*Sho Iwagami¹, Yuichi Onda¹, Maki Tsujimura² (1. Center for Research in Isotopes and Environmental Dynamics, University of Tsukuba, 2. Graduate school of Life and Environmental Sciences, University of Tsukuba)

Keywords:forested small catchment, dissolved fraction, suspended sediment, coarse organic matter, cesium-137, Decontamination works

Cesium-137 concentration of dissolved fraction, suspended sediment and coarse organic matter were measured at small forested catchment in the headwater area. In this presentation we will show the 5 year monitoring results of concentration and the flux.