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BOOKLET to Provide Basic Information Regarding Health Effects of Radiation (2nd edition)
Chapter 7 Environmental Radiation Monitoring 7.1 Spatiotemporal Distribution of Ambient Dose Rates

Distribution of Ambient Dose Rates in Fukushima Prefecture and Neighboring Prefectures

Distribution of Ambient Dose Rates in Fukushima Prefecture and Neighboring Prefectures_Figure

An airborne monitoring survey was conducted within the 80-km zone of Tokyo Electric Power Company (TEPCO)'s Fukushima Daiichi NPS and outside this zone, mainly in the western area of Fukushima Prefecture, and in Ibaraki, Gunma, Tochigi and Miyagi Prefectures.

The left figure shows the airborne monitoring survey results as of November 2011, seven months after the accident, and the right figure shows those as of November 2019.

 

Readings of the Airborne Monitoring Survey in Fukushima Prefecture and Neighboring Prefectures (February 13, 2020)

https://radioactivity.nsr.go.jp/ja/contents/15000/14890/24/200213_14th_air.pdf (in Japanese)

  • Included in this reference material on March 31, 2013
  • Updated on March 31, 2021
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