Chapter

Recent Trends in Modelling of Environmental Contaminants

pp 167-195

Date:

Environmental Effects of the Fukushima Daiichi Nuclear Power Plant Accident

  • Katsumi HiroseAffiliated withDepartment of Materials and Life Sciences, Faculty of Science and Technology, Sophia UniversityGeosphere Research Institute, Saitama University Email author 

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Abstract

A gigantic earthquake and resulting tsunami, occurred on March 11, 2011, causing the Fukushima Daiichi Nuclear Power Plant (FDNPP) accident. Large amounts of radionuclides emitted in the atmosphere (131I: 160 PBq, 137Cs: 15 PBq) and predominantly deposited on the Japanese Island and the western North Pacific, and a considerable part of them were dispersed in the Northern Hemisphere. After the accident, the Japanese Government started emergency monitoring of environmental radioactivity. Worldwide radioactivity measurements including CTBTO in the Northern Hemisphere had detected the Fukushima-derived radionuclides in the atmosphere. In this chapter, environmental radioactivity monitoring results in the early stage of the Fukushima accident are described.

Keywords

Fukushima earthquake Atmospheric radioactivity Radioactivity contamination mapping Ambient dose rate measurement