2020 Fall Meeting
Sep 16 - Sep 18, 2020Online
2020 Fall Meeting
Sep 16 - Sep 18, 2020Online
[3A08]Development of a source term estimation method based on Bayesian inference with multi-scale atmospheric dispersion simulations
*Hiroaki Terada1, Haruyasu Nagai1, Katsunori Tsuduki1, Masanao Kadowaki1, Akiko Furuno1(1. JAEA)
Keywords:
source term,Bayesian inference,atmospheric dispersion,numerical simulation,Fukushima Daiichi nuclear power station accident,WSPEEDI
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 of the method.