Sr (
Sr) from port of Fukushima Daiichi Nuclear Power Plant; Analysis of the temporal variation from the accident to March 2022 and evaluation of its impact on Fukushima coast and offshore areasMachida, Masahiko 
; Iwata, Ayako; Yamada, Susumu ; Otosaka, Shigeyoshi* 
; Kobayashi, Takuya ; Funasaka, Hideyuki*; Morita, Takami*
We estimate monthly discharged inventory of Sr from port of Fukushima Daiichi Nuclear Power Plant (1F) from Jun. 2013 to Mar. 2022 by using the Voronoi tessellation method inside the port, following the monitoring of Sr sea water radioactivity concentration inside the port. The results suggest that the closure of sea side impermeable wall is the most effective for the reduction of discharged one. In addition, the results roughly reveal the monthly discharged inventory required to observe visible enhancement of the sea radioactivity concentration from the background level in each area. Such outcome is significant for considering environmental impacts on the planned future releasing of the treated water accumulated in 1F site.
Language |
: | Japanese |
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Journal |
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Volume |
: | 22 |
Number |
: | 4 |
Pages |
: | p.119 - 139 |
Publication Year/Month |
: | 2023/11 |
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Keywords |
: | Fukushima Daiichi Nuclear Power Station Accident; 福島第一原子力発電所事故; 1F廃止措置; 海水放射能濃度; 放射性ストロンチウム; 福島沿岸及び沖合 |
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