The use of fluorocarbon tracers to monitor the movement of water in unsaturated porous media : column study and computer model

Persistent Link:
http://hdl.handle.net/10150/191902
Title:
The use of fluorocarbon tracers to monitor the movement of water in unsaturated porous media : column study and computer model
Author:
Roberts, Mary Elizabeth,1959-
Issue Date:
1986
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:
A major problem associated with monitoring the velocity of water in unsaturated porous media is the difficulty of removing samples of the pore water at different times for analysis. A possible solution to this problem is to use volatile fluorocarbon tracers which are transported in a soluble form, yet can be measured in a gaseous state, thus eliminating the difficult process of extracting liquid samples from soils with high matric suction. The three fluorocarbon tracers used to investigate the suitability of a volatile tracer method were bromochlorodifluoromethane, chlorodifluoroethane and sulfur hexafluoride. Five laboratory column experiments were conducted to determine under what conditions volatile tracers would give reliable estimates of water flow rates. The Discrete State Compartment computer model was used to interpret the laboratory data, thereby allowing a more accurate estimate of water travel times in unsaturated media.
Type:
Thesis-Reproduction (electronic); text
LCSH Subjects:
Hydrology.; Groundwater flow.; Groundwater tracers.
Degree Name:
M.S.
Degree Level:
masters
Degree Program:
Hydrology and Water Resources Administration; Graduate College
Degree Grantor:
University of Arizona
Committee Chair:
Evans, Daniel D.

Full metadata record

DC FieldValue Language
dc.language.isoenen_US
dc.titleThe use of fluorocarbon tracers to monitor the movement of water in unsaturated porous media : column study and computer modelen_US
dc.creatorRoberts, Mary Elizabeth,1959-en_US
dc.contributor.authorRoberts, Mary Elizabeth,1959-en_US
dc.date.issued1986en_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.abstractA major problem associated with monitoring the velocity of water in unsaturated porous media is the difficulty of removing samples of the pore water at different times for analysis. A possible solution to this problem is to use volatile fluorocarbon tracers which are transported in a soluble form, yet can be measured in a gaseous state, thus eliminating the difficult process of extracting liquid samples from soils with high matric suction. The three fluorocarbon tracers used to investigate the suitability of a volatile tracer method were bromochlorodifluoromethane, chlorodifluoroethane and sulfur hexafluoride. Five laboratory column experiments were conducted to determine under what conditions volatile tracers would give reliable estimates of water flow rates. The Discrete State Compartment computer model was used to interpret the laboratory data, thereby allowing a more accurate estimate of water travel times in unsaturated media.en_US
dc.description.notehydrology collectionen_US
dc.typeThesis-Reproduction (electronic)en_US
dc.typetexten_US
dc.subject.lcshHydrology.en_US
dc.subject.lcshGroundwater flow.en_US
dc.subject.lcshGroundwater tracers.en_US
thesis.degree.nameM.S.en_US
thesis.degree.levelmastersen_US
thesis.degree.disciplineHydrology and Water Resources Administrationen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.chairEvans, Daniel D.en_US
dc.identifier.oclc213360383en_US
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