2017 Fiscal Year Final Research Report
Determinants of initial distribution and penetrant diffusion of the deposited radiocesium
| Project/Area Number |
15K16112
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Environmental dynamic analysis
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| Research Institution | University of Tsukuba |
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Principal Investigator |
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Keywords | 放射性セシウム / 初期深度分布 / 透水性 / セシウム吸着 / 下方浸透 / Half depth |
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| Outline of Final Research Achievements |
A massive amount of radiocesium was released into the atmosphere and deposited on soils by the Fukushima Dai-ichi Nuclear Power Plant accident on March 2011. However, determinant of initial distribution of the deposited radiocesium in soils was still unclear. Therefore, the physical and chemical properties of soils in 50 monitoring sites by Japan Atomic Energy Agency (JAEA) were measured to clarify the determinants of initial distribution. As a result, the half depth (cm) of radiocesium was weakly and positively correlated with saturated hydraulic conductivity, but not correlated with any chemical properties such as total carbon contents, radiocesium interception potential (RIP). It indicated that initial distribution of radiocesium was affected by the physical properties that determine the penetration of water rather than the chemical properties that determine the adsorption ability of radiocesium.
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| Free Research Field |
環境動態解析学
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