Extracting changes in air temperature using acoustic coda phase delays

Omar Marcillo; Stephen Arrowsmith; Rod Whitaker; Emily Morton; W. Scott Phillips

doi:10.1121/1.4896404

Extracting changes in air temperature using acoustic coda phase delays

Omar Marcillo, Stephen Arrowsmith, Rod Whitaker, Emily Morton, W. Scott Phillips

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

Blast waves produced by 60 high-explosive detonations were recorded at short distances (few hundreds of meters); the corresponding waveforms show charge-configuration independent coda-like features (i.e., similar shapes, amplitudes, and phases) lasting several seconds. These features are modeled as reflected and/or scattered waves by acoustic reflectors/scatters surrounding the explosions. Using explosion pairs, relative coda phase delays are extracted and modeled as changes in sound speed due to changes in air temperature. Measurements from nearby weather towers are used for validation.

Original language	English
Pages (from-to)	EL309-EL314
Journal	Journal of the Acoustical Society of America
Volume	136
Issue number	4
DOIs	https://doi.org/10.1121/1.4896404
State	Published - Oct 1 2014
Externally published	Yes

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10.1121/1.4896404

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Extracting changes in air temperature using acoustic coda phase delays

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