Tracking radioactivity transforming in the life of residents in radioactive contamination area

2015 Fiscal Year Final Research Report

• Project/Area Number: 24248060
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Boundary agriculture
• Research Institution: Nagasaki University
• Principal Investigator: TAKATSUJI Toshihiro 長崎大学, 水産・環境科学総合研究科(環境), 教授 (70163219)
• Co-Investigator(Kenkyū-buntansha): KIMURA Shinzo 獨協医科大学, 医学部, 准教授 (50321849) ; IMANAKA Tetsuji 京都大学, 原子炉実験所, 助教 (90109083) ; ENDO Satoru 広島大学, 工学(系)研究科(研究院), 教授 (90243609) ; SATO Hitoshi 茨城県立医療大学, 保健医療学部, 教授 (90285057)
• Project Period (FY): 2012-04-01 – 2016-03-31
• Keywords: 環境汚染 / 放射能汚染

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.

Free Research Field

放射線生物物理学