Measurements and evaluations of air dose rates around Fukushima, 5; Characteristics of air dose rate distribution in the environment around the Fukushima Nuclear Power Plant site

Mikami, Satoshi   ; Matsuda, Norihiro  ; Ando, Masaki  ; Kinase, Sakae   ; Kitano, Mitsuaki; Kawase, Keiichi ; Matsumoto, Shinichiro; Yamamoto, Hideaki; Saito, Kimiaki  

This article presents the features of regional distributions and temporal changes in air dose rate and radionuclide deposition densities in Fukushima on the basis of analyses on large-scale environmental monitoring results using diverse methods. The continuity of decontamination effects is discussed according to repeated monitoring data after the decontamination model project. Further, some examples are shown on the projection of air dose rates together with the ecological half lives for different land uses.