[1I13-17] Environmental Dynamics 3

[1I14] Investigation on distribution of radioactive substances in Fukushima

(14) Similarity of long-term temporal decrease in atmospheric Cs-137 between Chernobyl and Fukushima

*Yuko Hatano¹, Shu Mori¹, Eiichi Suetomi¹ (1. Graduate School of Systems and Information Engineering, University of Tsukuba)

Keywords:aerosols, Chernobyl, Fukushima, power law

Long-term trends in atmospheric Cs-137 concentrations were investigated at a total of 8 sites, 3 in Fukushima Prefecture and 5 near Chernobyl. As a result, we found that both can be approximated by a power function of the elapsed time t, as t^-1.33.