検索対象:     
報告書番号:
※ 半角英数字
 年 ~ 
 年

Atmospheric dispersion simulations for the assessment of radiological dose to the public; Reassessment of the atmospheric concentration distribution of radioactive materials in the immediate aftermath of the accident at the Fukushima Daiichi Nuclear Power Plant

被ばく線量評価のための大気拡散シミュレーション; 福島第一原子力発電所事故初期段階における大気中放射性物質濃度分布の再構築

永井 晴康  

Nagai, Haruyasu

東京電力福島第一原子力発電所の事故に伴い、環境中に放出された放射性物質のうち、ヨウ素等の短半減期核種による事故初期段階における内部被ばく線量を評価するために、線量推計に必要となる大気中放射性物質濃度の時空間分布を大気拡散シミュレーションにより再構築した。計算対象核種は、内部被ばく線量への寄与率を考慮して、$$^{131}$$I, $$^{133}$$I, $$^{132}$$Te, $$^{137}$$Csとし、地上付近の水平方向3km間隔、毎時刻の計算出力から、濃度時空間分布データベースを作成した。

Radioactive materials were released into the environment due to the accident that occurred at the Fukushima Daiichi Nuclear Power Plant, which is operated by the Tokyo Electric Power Company. This release immediately led to the performance of an internal exposure dose assessment of iodine and other nuclides with a short halflife. To determine the necessary dose estimation, the spatial-temporal distribution of the atmospheric concentration of radioactive materials was reassessed by performing dispersion simulations with $$^{131}$$I, $$^{133}$$I, $$^{132}$$Te, and $$^{137}$$Cs with due consideration given to their contribution to the internal exposure doses. A database of the spatial-temporal distribution of the concentration was developed based on the results obtained from the calculations performed for each defined time at a horizontal interval of 3 km near the ground surface.

Access

:

- Accesses

InCites™

:

Altmetrics

:

[CLARIVATE ANALYTICS], [WEB OF SCIENCE], [HIGHLY CITED PAPER & CUP LOGO] and [HOT PAPER & FIRE LOGO] are trademarks of Clarivate Analytics, and/or its affiliated company or companies, and used herein by permission and/or license.