Persistent Link:
http://hdl.handle.net/10150/191923
Title:
Water movement in nonisothermal tuff
Author:
Davies, Bill Edward,1958-
Issue Date:
1987
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:
Water movement within three unsaturated welded tuff cores was studied in response to imposed thermal gradients of approximately 5°C/cm. Bulk density and initial, transient and final water content distributions were determined each 1-cm along the cores with gamma attenuation methods. Temperatures within the cores were measured by thermocouples embedded 1.5 cm into the rock cores. Liquid return flow toward the heat source was shown by the initial and final distributions of iodide. These experiments indicated that a countercurrent of water vapor driven away from a heat source and subsequent liquid return flow can be established when a thermal gradient is present within sealed porous rock cores. A field heating experiment was also performed in a densely-welded tuff formation. At a position 0.89 meters from a 1500W heat source, the temperature increased 11.1°C and the potential decreased approximately 9 bars after heating for 94 hours.
Type:
Thesis-Reproduction (electronic); text
LCSH Subjects:
Hydrology.; Groundwater flow.; Radioactive waste disposal in the ground.
Degree Name:
M.S.
Degree Level:
masters
Degree Program:
Hydrology and Water Resources; Graduate College
Degree Grantor:
University of Arizona
Committee Chair:
Evans, D. D.

Full metadata record

DC FieldValue Language
dc.language.isoenen_US
dc.titleWater movement in nonisothermal tuffen_US
dc.creatorDavies, Bill Edward,1958-en_US
dc.contributor.authorDavies, Bill Edward,1958-en_US
dc.date.issued1987en_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.abstractWater movement within three unsaturated welded tuff cores was studied in response to imposed thermal gradients of approximately 5°C/cm. Bulk density and initial, transient and final water content distributions were determined each 1-cm along the cores with gamma attenuation methods. Temperatures within the cores were measured by thermocouples embedded 1.5 cm into the rock cores. Liquid return flow toward the heat source was shown by the initial and final distributions of iodide. These experiments indicated that a countercurrent of water vapor driven away from a heat source and subsequent liquid return flow can be established when a thermal gradient is present within sealed porous rock cores. A field heating experiment was also performed in a densely-welded tuff formation. At a position 0.89 meters from a 1500W heat source, the temperature increased 11.1°C and the potential decreased approximately 9 bars after heating for 94 hours.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.lcshRadioactive waste disposal in the ground.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.chairEvans, D. D.en_US
dc.identifier.oclc213416872en_US
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