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Tomographic imaging of surface waves; a case study from the Phoenix Mine, Battle Mountain, Nevada

J. W. Rector, J. Pfeiffe, S. Hodges, J. Kingman and E. Sprott
Tomographic imaging of surface waves; a case study from the Phoenix Mine, Battle Mountain, Nevada
Leading Edge (Tulsa, OK) (November 2015) 34 (11): 1360-1364

Abstract

Conventional surface-wave analyses for estimating shallow-seismic properties typically use 2D geometries. A new geometry uses tomographic imaging of surface waves to reconstruct surface-wave velocity and attenuation profiles in three dimensions. Sources and receivers are deployed around a border encompassing an area on the earth's surface. The surface wave is assumed to propagate along a simple ray between source and receiver that attenuates with depth as a function of frequency. Using conventional raypath-tomography techniques, surface-wave velocity and attenuation tomograms can be generated as a function of frequency and then used to estimate shear-wave velocity and attenuation versus depth using standard surface-wave inversion techniques. The methodology is described in a field study designed to image old mine workings. Velocity and attenuation tomograms exhibit anomalous areas that correspond to known voids.


ISSN: 1070-485X
EISSN: 1938-3789
Serial Title: Leading Edge (Tulsa, OK)
Serial Volume: 34
Serial Issue: 11
Title: Tomographic imaging of surface waves; a case study from the Phoenix Mine, Battle Mountain, Nevada
Affiliation: University of California-Berkeley, Berkeley, CA, United States
Pages: 1360-1364
Published: 201511
Text Language: English
Publisher: Society of Exploration Geophysicists, Tulsa, OK, United States
References: 7
Accession Number: 2016-002049
Categories: Environmental geologyApplied geophysics
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus.
N39°10'00" - N41°00'00", W117°45'00" - W116°34'60"
Secondary Affiliation: Zapata Incorporated, USA, United StatesNewmont Mining, USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute.
Update Code: 201601
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