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Vertical fracture detection by exploiting the polarization properties of ground-penetrating radar signals

Georgios P. Tsoflias, Jean-Paul van Gestel, Paul L. Stoffa, Donald D. Blankenship and Mrinal Sen
Vertical fracture detection by exploiting the polarization properties of ground-penetrating radar signals
Geophysics (May 2004) 69 (3): 803-810

Abstract

Vertically oriented thin fractures are not always detected by conventional single-polarization reflection profiling ground-penetrating radar (GPR) techniques. We study the polarization properties of EM wavefields and suggest multipolarization acquisition surveying to detect the location and azimuth of vertically oriented fractures. We employ analytical solutions, 3D finite-difference time-domain modeling, and field measurements of multipolarization GPR data to investigate EM wave transmission through fractured geologic formations. For surface-based multipolarization GPR measurements across vertical fractures, we observe a phase lead when the incident electric-field component is oriented perpendicular to the plane of the fracture. This observation is consistent for nonmagnetic geologic environments and allows the determination of vertical fracture location and azimuth based on the presence of a phase difference and a phase lead relationship between varying polarization GPR data.


ISSN: 0016-8033
EISSN: 1942-2156
Coden: GPYSA7
Serial Title: Geophysics
Serial Volume: 69
Serial Issue: 3
Title: Vertical fracture detection by exploiting the polarization properties of ground-penetrating radar signals
Affiliation: University of Kansas, Lawrence, KS, United States
Pages: 803-810
Published: 200405
Text Language: English
Publisher: Society of Exploration Geophysicists, Tulsa, OK, United States
References: 23
Accession Number: 2005-030808
Categories: Applied geophysics
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus.
Source Medium: WWW
Secondary Affiliation: British Petroleum, USA, United StatesUniversity of Texas at Austin, USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data supplied by Society of Exploration Geophysicists, Tulsa, OK, United States
Update Code: 200517
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