[3C01-09] Environmental Radiation Monitoring

10:30 AM - 10:45 AM JST(1:30 AM - 1:45 AM UTC)

[3C05] The Progress and Future Prospects of Environmental Radiological Monitoring by Japan Atomic Energy Agency(5) Characteristics of air dose rate distributions and temporal changes on ground monitoring

*Shigeo Nakama¹, Kazuya Yoshimura¹, Masaki Andoh¹, Satoshi Mikami¹, Yukihisa Sanada¹ (1. JAEA)

Keywords:

Fukushima Daiichi Nuclear Power Station Accident,Air dose rate distribution,Temporal change

The distribution of radioactive materials due to the accident at the TEPCO's Fukushima Daiichi Nuclear Power Station has been investigated since June 2011. survey conducted as ground Radiological monitoring. In this report, we present air dose rate maps created from the results of air dose rate measurements (fixed-point survey using survey meters, car-borne surveys, walk survey, and unmanned helicopter survey) conducted as part of ground monitoring. The results of analysis of temporal changes in air dose rates and their characteristics are also presented.