2016 Fiscal Year Final Research Report
Understanding the cesium migration in groundwater through the fractured rock
| Project/Area Number |
15K14277
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Earth system and resources engineering
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| Research Institution | Nihon University |
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Principal Investigator |
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| Co-Investigator(Renkei-kenkyūsha) |
YASUTAKA Tetsuo 産業技術総合研究所, 地圏資源環境研究部門, 主任研究員 (60610417)
TOKUNAGA Tomochika 東京大学, 新領域創生科学研究科, 教授 (70237072)
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| Research Collaborator |
SUZUKI Hiroaki
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| Project Period (FY) |
2015-04-01 – 2017-03-31
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| Keywords | 東京電力福島第一原子力発電所事故 / 放射性セシウム / 物質移行 / 地球化学的性状 / 地下水流動 / 花崗岩 / 堆積岩 / 断層 |
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| Outline of Final Research Achievements |
For the purpose of predicting migration of the radioactive cesium (Cs) in the granitic rocks and sedimentary formations released by the Tokyo Electric Power Company Fukushima Daiichi Nuclear Power Plant accident and predicting the future effects due to the released Cs, comprehensive evaluation based on major and trace elements analysis, groundwater dating, Cs concentration, etc. in the surface, well and spring waters have been carried out at the area from Abukuma mountains to the Pacific ocean in Fukushima Prefecture.
As a result, it is possible to classify the water quality according to the geology of the water sampling point and the sampling depth, and the analysis results of groundwater age and Cs concentration suggested existence of groundwater of different origins.
The above results are important information on the decision of the residents who are considering the return on the disaster area and show the importance of continuous monitoring of Cs concentration.
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| Free Research Field |
環境地質学
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