Show simple item record

dc.contributor.authorGoedecke, Walter, 1954-*
dc.creatorGoedecke, Walter, 1954-en_US
dc.date.accessioned2013-04-03T13:18:31Z
dc.date.available2013-04-03T13:18:31Z
dc.date.issued1990en_US
dc.identifier.urihttp://hdl.handle.net/10150/278261
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.
dc.language.isoen_USen_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.subjectGeophysics.en_US
dc.subjectGeotechnology.en_US
dc.subjectEngineering, Electronics and Electrical.en_US
dc.titleField studies and scale modeling using cross-borehole electromagnetic diffraction probingen_US
dc.typetexten_US
dc.typeThesis-Reproduction (electronic)en_US
thesis.degree.grantorUniversity of Arizonaen_US
thesis.degree.levelmastersen_US
dc.identifier.proquest1342471en_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.nameM.S.en_US
dc.identifier.bibrecord.b26541130en_US
refterms.dateFOA2018-08-27T13:40:37Z
html.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.


Files in this item

Thumbnail
Name:
azu_td_1342471_sip1_m.pdf
Size:
5.484Mb
Format:
PDF

This item appears in the following Collection(s)

Show simple item record