Feasibility of using electromagnetic geophysical methods to investigate landfills and disturbed areas as a threat to ground-water quality in Pima County, Arizona

Persistent Link:
http://hdl.handle.net/10150/192024
Title:
Feasibility of using electromagnetic geophysical methods to investigate landfills and disturbed areas as a threat to ground-water quality in Pima County, Arizona
Author:
Burchard, Gary Curtis,1961-
Issue Date:
1989
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:
This project assessed the feasibility of using the electromagnetic geophysical technique (EM) in the Tucson basin to both (1) determine the boundaries of landfills and disturbed areas and 2) delineate and detect inorganic contaminant plumes which may threaten ground-water quality. Profiles of bulk electrical conductivity produced by the EM-34-3XL methods showed clearly the boundaries of landfills within the Tucson basin. Construction debris produced anomalies of about 10 mmhos/m, and municipal fill produced anomalies 20 to 50 mmhos/m greater than background variations. Horizontal-dipole configurations yielded profiles that were easier to read than from vertical-dipole configurations. The delineation of electrically conductive contaminant plumes in urban areas was impeded by metallic cultural artifacts. Although visual inspection of the graphed data did not yield evidence of a contaminant plume, a model from data collected north of the El Camino del Cerro Landfill showed a lower layer of greater conductivity than the lower layer west of the Santa Cruz River. Numerical modeling proved to be insensitive to the thickness of top layers.
Type:
Thesis-Reproduction (electronic); text
LCSH Subjects:
Hydrology.; Groundwater -- Quality -- Arizona -- Pima County.; Sanitary landfills -- Environmental aspects -- Arizona -- Pima County.; Groundwater flow -- Arizona -- Pima County.
Degree Name:
M.S.
Degree Level:
masters
Degree Program:
Hydrology and Water Resources; Graduate College
Degree Grantor:
University of Arizona
Committee Chair:
Davis, Stanley N.; Sternberg, Ben K.

Full metadata record

DC FieldValue Language
dc.language.isoenen_US
dc.titleFeasibility of using electromagnetic geophysical methods to investigate landfills and disturbed areas as a threat to ground-water quality in Pima County, Arizonaen_US
dc.creatorBurchard, Gary Curtis,1961-en_US
dc.contributor.authorBurchard, Gary Curtis,1961-en_US
dc.date.issued1989en_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.abstractThis project assessed the feasibility of using the electromagnetic geophysical technique (EM) in the Tucson basin to both (1) determine the boundaries of landfills and disturbed areas and 2) delineate and detect inorganic contaminant plumes which may threaten ground-water quality. Profiles of bulk electrical conductivity produced by the EM-34-3XL methods showed clearly the boundaries of landfills within the Tucson basin. Construction debris produced anomalies of about 10 mmhos/m, and municipal fill produced anomalies 20 to 50 mmhos/m greater than background variations. Horizontal-dipole configurations yielded profiles that were easier to read than from vertical-dipole configurations. The delineation of electrically conductive contaminant plumes in urban areas was impeded by metallic cultural artifacts. Although visual inspection of the graphed data did not yield evidence of a contaminant plume, a model from data collected north of the El Camino del Cerro Landfill showed a lower layer of greater conductivity than the lower layer west of the Santa Cruz River. Numerical modeling proved to be insensitive to the thickness of top layers.en_US
dc.description.notehydrology collectionen_US
dc.typeThesis-Reproduction (electronic)en_US
dc.typetexten_US
dc.subject.lcshHydrology.en_US
dc.subject.lcshGroundwater -- Quality -- Arizona -- Pima County.en_US
dc.subject.lcshSanitary landfills -- Environmental aspects -- Arizona -- Pima County.en_US
dc.subject.lcshGroundwater flow -- Arizona -- Pima County.en_US
thesis.degree.nameM.S.en_US
thesis.degree.levelmastersen_US
thesis.degree.disciplineHydrology and Water Resourcesen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.chairDavis, Stanley N.en_US
dc.contributor.chairSternberg, Ben K.en_US
dc.identifier.oclc213416577en_US
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