On the detection objects buried at a shallow depth using seismic wave reflections

Papandreou, Ben, Brennan, Michael J. and Rustighi, Emiliano (2011) On the detection objects buried at a shallow depth using seismic wave reflections. Journal of the Acoustical Society of America, 129 (3), 1366-1374. (doi:10.1121/1.3552878). (PMID:21428500)

Record type: Article

Abstract

This paper concerns the detection of shallow (of the order 1 m) buried objects using seismic excitation. Time-extended signals are used to generate a compressional wave using a shaker attached to the ground. The wave propagates through the ground, reflects off a buried object and is captured by an array of geophones on the surface. The envelopes of the cross-correlation functions between the measured ground velocities and the excitation signal are calculated and summed to generate a cross-sectional image of the ground. The wide cross-correlation peaks caused by high ground attenuation are partially compensated for by using the generalized cross-correlation function called the phase transform. Simple simulations are conducted to demonstrate the method, and some field experiments have been carried out aimed at the detection of a buried concrete pipe. In the experiments the pipe could be detected using the method proposed, with experimental and simulated data producing good agreement.

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