Field studies and scale modeling using cross-borehole electromagnetic diffraction probing

Persistent Link:
http://hdl.handle.net/10150/278261
Title:
Field studies and scale modeling using cross-borehole electromagnetic diffraction probing
Author:
Goedecke, Walter, 1954-
Issue Date:
1990
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
The scope of these studies encompasses both field site testing and scale modeling. The purpose was to better understand the complexities of electromagnetic diffraction geotomography, or the imaging of ground between boreholes using electromagnetic waves. Two field sites and a scale model tank were investigated. One field site, the San Xavier Mine facility, is located in metamorphosed paleozoic limestone. This site proved a challenge in that the medium was fairly inhomogeneous and resulted in server wave scattering. Inter-borehole transmission allowed only 15 MHz to penetrate for an adequate signal level. Both a parallel scan and geotomography of targets produced inconclusive results. The Apache Leap site contained a homogeneous quartz-latite tuff, allowing penetration of 150 MHz. Parallel scans of a metal pipe target, proved that alterant geotomography, or scans performed before and after tracer injection, was a possibility for future studies. The model tank allowed the use of horizontal dipole antennas, a coil substitute. Target effects produced strong interference patterns.
Type:
text; Thesis-Reproduction (electronic)
Keywords:
Geophysics.; Geotechnology.; Engineering, Electronics and Electrical.
Degree Name:
M.S.
Degree Level:
masters
Degree Program:
Graduate College
Degree Grantor:
University of Arizona

Full metadata record

DC FieldValue Language
dc.language.isoen_USen_US
dc.titleField studies and scale modeling using cross-borehole electromagnetic diffraction probingen_US
dc.creatorGoedecke, Walter, 1954-en_US
dc.contributor.authorGoedecke, Walter, 1954-en_US
dc.date.issued1990en_US
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.description.abstractThe scope of these studies encompasses both field site testing and scale modeling. The purpose was to better understand the complexities of electromagnetic diffraction geotomography, or the imaging of ground between boreholes using electromagnetic waves. Two field sites and a scale model tank were investigated. One field site, the San Xavier Mine facility, is located in metamorphosed paleozoic limestone. This site proved a challenge in that the medium was fairly inhomogeneous and resulted in server wave scattering. Inter-borehole transmission allowed only 15 MHz to penetrate for an adequate signal level. Both a parallel scan and geotomography of targets produced inconclusive results. The Apache Leap site contained a homogeneous quartz-latite tuff, allowing penetration of 150 MHz. Parallel scans of a metal pipe target, proved that alterant geotomography, or scans performed before and after tracer injection, was a possibility for future studies. The model tank allowed the use of horizontal dipole antennas, a coil substitute. Target effects produced strong interference patterns.en_US
dc.typetexten_US
dc.typeThesis-Reproduction (electronic)en_US
dc.subjectGeophysics.en_US
dc.subjectGeotechnology.en_US
dc.subjectEngineering, Electronics and Electrical.en_US
thesis.degree.nameM.S.en_US
thesis.degree.levelmastersen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.identifier.proquest1342471en_US
dc.identifier.bibrecord.b26541130en_US
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