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Wave propagation from an explosive source

By
Farrokh Jalinoos
Farrokh Jalinoos
*
Department of Geophysics, Colorado School of Mines, Golden, CO 80401.
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J. E. White
J. E. White
*
Department of Geophysics, Colorado School of Mines, Golden, CO 80401.
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Published:
January 01, 2000
Publication history
01 March 1985

Abstract

The model proposed describes the radiation of the primary seismic pulse from an explosive source. The model incorporates a viscous Voigt liquid in description of the nonelastic rock deformation that the explosion causes. The problem is solved in the frequency domain, followed by Fourier synthesis to obtain waveforms. Comparisons of the theoretical results with field data in three sedimentary environments of shale, sandstone, and marl indicate good quantitative agreements in shape and duration of transient pulses.

Values of angular normal stress obtained at the deformed boundary suggest a dynamic tensile strength of rocks that decreased with duration of the tensile stress transient. The radius of the deformed zone (B) scales with the charge size Q approximately as Qn where n is 1/2 or larger.

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Contents

Society of Exploration Geophysicists Geophysics Reprint Series

Seismic Wave Propagation: Collected Works of J. E. White

J. E. White
J. E. White
Professor Emeritus, Colorado School of Mines
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Society of Exploration Geophysicists
Volume
21
ISBN electronic:
9781560802471
Publication date:
January 01, 2000

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