Development of a source term estimation method based on Bayesian inference with multi-scale atmospheric dispersion simulations

Terada, Hiroaki ; Nagai, Haruyasu ; Tsuzuki, Katsunori ; Kadowaki, Masanao ; Furuno, Akiko

We have developed a method for estimation of source term of radioactive materials released into the atmosphere in nuclear accidents by comprehensive comparison of atmospheric dispersion simulations with different spatial scales and various types of environmental measurements. By applying this method to the Fukushima Daiichi Nuclear Power Station accident, the release rate estimated by the previous study was optimized and the effectiveness was examined.

Language	:	Japanese
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Meeting title	:	日本原子力学会2020年秋の大会
Held date	:	2020/09
Location (city)	:	福岡(online)
Location (country)	:	日本
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Keywords	:	放出源情報; ベイズ推定; 大気拡散; 数値シミュレーション; 福島第一原子力発電所事故; WSPEEDI; Fukushima Daiichi Nuclear Power Station Accident
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Cooperating Institute	:	名古屋大学

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Registration No. : BB20200068
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