Investigation on distribution of radioactive substances in Fukushima, 15; Analysis of time series using integrated map data developed after the Fukushima Daiichi Nuclear Power Plant accident; statistical evaluation of decontamination in agricultural land

Kim, M.  ; Sakuma, Kazuyuki   ; Shikaze, Yoshiaki ; Kurikami, Hiroshi  ; Mikami, Satoshi   ; Nagao, Fumiya; Machida, Masahiko  ; Saito, Kimiaki  

Integrated map data that integrates the distribution of air dose rates using a hierarchical Bayesian model has been developed for all monitoring data measured after the accident at the Fukushima Daiichi Nuclear Power Plant. In this study, we analyzed the data using the integrated map data for the purpose of statistical evaluation of temporal changes and areal decontamination in agricultural lands. As a result, typical temporal changes and quantitative effects of areal decontamination were confirmed.