Uncertainty assessment of environmental fate of radioactive cesium in the river basins of Fukushima Prefecture through long-term simulation

Nittono, Akira*; Ikenoue, Tsubasa ; Shimadera, Hikari*; Matsuo, Tomohito*; Kondo, Akira*

The Fukushima Daiichi Nuclear Power Plant accident caused extensive $^{137}$ Cs contamination. Long-term simulations have been conducted to predict the amount of $^{137}$ Cs outflow from river basins to the ocean. However, there are uncertainties about the influences of rainfall, tree types and dams to the $^{137}$ Cs outflow. This study focused on how much these three factors influence the $^{137}$ Cs outflow in eastern Fukushima river basins from 2011 to 2040. The $^{137}$ Cs outflow varied by -10 to +17% depending on precipitation, and by -16 to +19% depending on tree species, decreased by 21% by dams.

Language	:	Japanese
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Meeting title	:	空気調和・衛生工学会近畿支部第53回学術研究発表
Held date	:	2024/03
Location (city)	:	大阪
Location (country)	:	日本
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Keywords	:	福島第一原子力発電所事故; Fukushima Daiichi Nuclear Power Station Accident; セシウム137; Cesium 137; 長期予測; Long-term; 河川; River; 不確実性解析; Uncertainty Analysis
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Registration No. : BB20231899
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