Updating source term and atmospheric dispersion simulations for the dose reconstruction in Fukushima Daiichi Nuclear Power Station accident
永井 晴康; 寺田 宏明; 都築 克紀; 堅田 元喜; 太田 雅和; 古野 朗子; 朱里 秀作
Nagai, Haruyasu; Terada, Hiroaki; Tsuzuki, Katsunori; Katata, Genki; Ota, Masakazu; Furuno, Akiko; Akari, Shusaku
In order to assess the radiological dose to the public resulting from the Fukushima Daiichi Nuclear Power Station (FDNPS) accident in Japan, the spatiotemporal distribution of radioactive materials in the environment are reconstructed by computer simulations. In this study, by refining the source term of radioactive materials and modifying the atmospheric dispersion model (ATDM), the atmospheric dispersion simulation of radioactive materials is improved. Then, a database of spatiotemporal distribution of radioactive materials in the air and on the ground surface is developed from the output of the simulation. This database is used in other studies for the dose assessment by coupling with the behavioral pattern of evacuees from the FDNPS accident. The ATDM simulation was improved to use a new meteorological model and sophisticated deposition scheme. Although the improved ATDM simulations reproduced well the $$^{137}$$Cs deposition pattern in the eastern Japan scale, the reproducibility of deposition pattern was decreased in the vicinity of FDNPS. This result indicated the necessity of further refinement of the source term by optimization to the improved ATDM simulations.
使用言語 : English
掲載資料名 : EPJ Web of Conferences (Internet)
: 153
ページ数 : p.08012_1 - 08012_7
発行年月 : 2017/09
出版社名 : EDP Sciences
発表会議名 : 13th International Conference on Radiation Shielding (ICRS-13) and 19th Topical Meeting of the Radiation Protection & Shielding Division (RPSD 2016)
開催年月 : 2016/10
開催都市 : Paris
開催国 : France
特許データ :
論文URL :
キーワード : Source term; Atmospheric dispersion; Fukushima nuclear accident; Dose reconstruction; Fukushima Daiichi Nuclear Power Station Accident; 福島第一原子力発電所事故
使用施設 :
広報プレスリリース :
受委託・共同研究相手機関 : 環境省
登録番号 : BB20152628
抄録集掲載番号 : 45001200
論文投稿番号 : 19431
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