| Budget Amount *help |
¥47,190,000 (Direct Cost: ¥36,300,000、Indirect Cost: ¥10,890,000)
Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2013: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2012: ¥42,120,000 (Direct Cost: ¥32,400,000、Indirect Cost: ¥9,720,000)
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| Outline of Final Research Achievements |
It is difficult to estimate amounts of radioactive nuclides lost for the reason of the short half-lives including radioactive iodine due to the Fukushima Daiichi Nuclear Power Plant accident because the geographic distributions of radionuclides are differenteach other. Radioactivity was found largely leaking from the power plant to sea in the field survey on September 2013. Radioactivity from the fallout was found occasionally concentrated in various materials depending on situations and flowed with river water and made hot spots at the distant places. In Tokyo bay, relatively higher radioactivity was found in the sediments near the mouths of rivers. It is expected spreading to the center and the southern part of the bay from natural radioactivity lead 210 data. The radioactivity was found throughout Japan in moss. The radioactivity continues to be found in aerosol at Nagasaki over 1,000 km distant from the power plant. Exposure management of the residents are continuously necessary.
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