Source term estimation using air concentration measurements during nuclear accident
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- 作者：Sihang Qiu ; Bin Chen ; Zhengqiu Zhu…
- 关键词：Source term estimation ; Radioactive air concentration ; Gaussian puff model ; Ridge regression ; Particle swarm optimization
- 刊名：Journal of Radioanalytical and Nuclear Chemistry
- 出版年：2017
- 出版时间：January 2017
- 年：2017
- 卷：311
- 期：1
- 页码：165-178
- 全文大小：
- 刊物类别：Chemistry and Materials Science
- 刊物主题：Nuclear Chemistry; Physical Chemistry; Nuclear Physics, Heavy Ions, Hadrons; Diagnostic Radiology; Inorganic Chemistry;
- 出版者：Springer Netherlands
- ISSN：1588-2780
- 卷排序：311
文摘
The focus of this paper is locating and quantifying the diffusion source of 137Cs by using observation data collected from monitoring stations. The estimation method is firstly tested in synthetic experiments and then verified with real 137Cs concentration data of Fukushima accident. An atmospheric dispersion simulation system is used to support particle diffusion model. Besides, ridge regression is applied to calculate release rate. In terms of location estimation, posterior function of the source location can be deduced according to Bayesian inference. particle swarm optimization (PSO) method is implemented to locate diffusion source.