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2016 Fiscal Year Final Research Report

Transfer and accumulation of radioactive material in marine ecosystem

Planned Research

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Project AreaInterdisciplinary Study on Environmental Transfer of Radionuclides from the Fukushima Daiichi Nuclear Power Plant Accident
Project/Area Number 24110005
Research Category

Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

Allocation TypeSingle-year Grants
Review Section Science and Engineering
Research InstitutionTokyo University of Marine Science and Technology

Principal Investigator

Kanda Jota  東京海洋大学, 学術研究院, 教授 (60202032)

Co-Investigator(Kenkyū-buntansha) 喜多村 稔  国立研究開発法人海洋研究開発機構, その他部局等, 研究員 (00392952)
西川 淳  東海大学, 海洋学部, 教授 (10282732)
青野 辰雄  国立研究開発法人量子科学技術研究開発機構, その他部局等, その他 (20270605)
山口 篤  北海道大学, 水産科学研究科(研究院), 准教授 (50344495)
高木 省吾  北海道大学, 水産学部, 准教授 (60179421)
土屋 光太郎  東京海洋大学, その他部局等, 准教授 (60251683)
立田 穣  一般財団法人電力中央研究所, その他部局等, その他 (60371522)
林 敏史  東京海洋大学, その他部局等, 教授 (70228584)
野田 明  東京海洋大学, その他部局等, 教授 (80262343)
渡辺 豊  北海道大学, 地球環境科学研究科(研究院), 准教授 (90333640)
茂木 正人  東京海洋大学, 海洋科学技術研究科, 准教授 (50330684)
田中 祐志  東京海洋大学, 海洋科学技術研究科, 教授 (90207150)
Co-Investigator(Renkei-kenkyūsha) MORIYA Shigeharu  理化学研究所, 基幹研究所, 専任研究員 (00321828)
KOBAYASHI Takuya  電力中央研究所, 環境科学研究所, 上席研究員 (60371530)
YOSHIMURA Takeshi  電力中央研究所, 環境科学研究所, 主任研究員 (20371536)
Research Collaborator ISHIMARU Takashi  
IGARASHI Satoshi  
SUGA Jiro  
YAMAKAWA Hiroshi  
OTSU Hideaki  
ITO Yukari  
TAKAZAWA Nobue  
UCHIYAMA Kaori  
KUBO Atshushi  
Project Period (FY) 2012-06-28 – 2017-03-31
Keywords環境放射能 / 沿岸海域 / 外洋域 / 海洋生態系
Outline of Final Research Achievements

Radioactive material derived from the Fukushima Daiichi Nuclear Power Plant accident was investigated in marine ecosystem. 1) For radioactive cesium in marine organisms and environment in the coastal area of Fukushima, we obtained a continuous time-series data set by ship observations twice a year. Time-series data set for radioactive cesium in zooplankton was also obtained in several open ocean areas. 2) Examinations of transfer routes of radioactive cesium in coastal rocky seafloor revealed that transition of radioactive cesium from suspended or descending particles, and from organic fraction of sediments was small. 3) Using the on-site observation data, the transition of radioactive cesium in the ecosystem was reproduced by a numerical model, and the model was applied to prediction of the future trend of the radioactivity level of marine organisms.

Free Research Field

海洋生物地球化学

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Published: 2018-03-22  

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