[3Q10-13] Environmental Radioactivity 3

[3Q10] Investigation on distribution of radioactive substances in Fukushima

(7)Estimation of initial concentration and flux of radiocesium discharged from river catchment

*Yuichi Onda¹, Keisuke Taniguchi², Yasuyuki Shimizu³, Toshiki Iwasaki⁴ (1. CRiED, Univerisity of Tsukuba, 2. Fukushima Prefectural Centre for Environmental Creation, 3. Faculty of Engineering, Hokkaido University, 4. CERI)

Keywords:Fukushima NPP accident, Flux of radionuclides in rivers, Cs-137

Large amount of radionuclides have been deposited after FDNPP accident. The fallout radionuclides then flow down by river through time. We use several data and finding of Chernobyl experiences and successfully estimate initial concentration and flux of radionulides from rivers.