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Improved seismoacoustic analysis model and its application to source parameter inversion of near-surface small-yield chemical explosions

Improved seismoacoustic analysis model and its application to source parameter inversion of... 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. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Applied Geophysics Springer Journals

Improved seismoacoustic analysis model and its application to source parameter inversion of near-surface small-yield chemical explosions

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References (39)

Publisher
Springer Journals
Copyright
Copyright © The Editorial Department of APPLIED GEOPHYSICS 2021
ISSN
1672-7975
eISSN
1993-0658
DOI
10.1007/s11770-021-0848-8
Publisher site
See Article on Publisher Site

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.

Journal

Applied GeophysicsSpringer Journals

Published: Mar 1, 2021

Keywords: Near-surface chemical explosion; small yield; seismoacoustic analysis; estimation of source parameters; Bayesian MCMC method

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