Improved seismoacoustic analysis model and its application to source parameter inversion of near-surface small-yield chemical explosions
Zhang Liang-Yong 1,2, Li Xin 2, Liang Xu-Bin 2, Wang Tong-Dong 2, Tang Shi-Ying 2, Zhang De-Zhi ♦2, and Zeng Xin-Wu ♦1
1. College of Meteorology and Oceanology, National University of Defense Technology, Changsha 410073, China
2. Northwest Institute of Nuclear Technology, Xi’an 710024, China.
Abstract The seismoacoustic analysis method has broad potential applications to source parameter estimation for near-surface explosion events such as industrial explosions and terrorist attacks. In this study, current models were improved by modifying the acoustic model and adopting the Bayesian Markov-chain-Monte-Carlo inversion method. The source parameters of near-surface small-yield chemical explosions were analyzed via the improved seismoacoustic analysis model and by the estimation accuracy of seismoacoustic joint inversion. Estimation and analysis results showed that the improved seismoacoustic analysis model considered ground shock coupling and the impact of explosion products ejecting from the surface so that the improved acoustic impulse relation was more consistent with the measured data than the Ford impulse relation. It is suitable for deep-burial, shallow-burial, and near-surface aerial explosions. Furthermore, trade-off relationships were declined through the application of the improved model to source parameter inversion for near-surface small-yield chemical explosions, and source parameter estimation accuracy was improved.
About author: Zhang Liang-Yong is a doctoral student from the National University of Defense Technology. He received a Bachelor’s degree in Physics from Nanjing University in 2012 and a Master’s degree in Signal and Information Processing from the Northwest Institute of Nuclear Technology in 2015. His main research interests are seismoacoustic analysis and localization. Email:zhangliangyong18@nudt.edu.cn
Cite this article:
. Improved seismoacoustic analysis model and its application to source parameter inversion of near-surface small-yield chemical explosions[J]. APPLIED GEOPHYSICS, 2021, 18(1): 17-30.
2021, Vol. 18 
