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The distribution of radon-222 in the ground water of the north-central Tucson basin and its relationship to the hydrogeology

dc.contributor.authorSmith, Bruce D.
dc.creatorSmith, Bruce D.en_US
dc.date.accessioned2011-11-28T14:13:43Z
dc.date.available2011-11-28T14:13:43Z
dc.date.issued1988en_US
dc.identifier.urihttp://hdl.handle.net/10150/192005
dc.description.abstractA reconnaissance study of ²²²Rn concentrations in the ground water of the North-Central Tucson basin revealed a range of concentrations from 80 to 1400 pCi/L in wells, and 60 to 1260 pCi/L in domestic waters. Estimated degradation of Rn in water from wells to homes ranges from 8 to 50%. The interior well field of mid-Tucson, may represent background concentrations of Rn with a mean value of 250 pCi/L. The limited data define an anomalous trend (500 to 1400 pCVL) of ²²²Rn paralleling the Santa Cruz River area. 222Rn concentrations above 500 pCVL correlate positively with temperature, and no low temperature water contains high ²²²Rn levels. Weak inverse correlations of ²²²Rn with pumping bowl depth, pumping water level and average upper perforation intervals are evident. It is concluded that the source of ²²²Rn is close to the well bore. Considered are several possible hypothesis and mechanisms responsible for the anomalous Santa Cruz ²²²Rn trend, including mechanisms related to water circulation along the Santa Cruz fault, lithology, and aquifer compaction.
dc.language.isoenen_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.subjectHydrology.
dc.subjectRadon -- Isotopes.
dc.subjectGroundwater -- Pollution -- Arizona -- Tucson Basin.
dc.subjectHydrogeology -- Arizona -- Tucson Basin.
dc.titleThe distribution of radon-222 in the ground water of the north-central Tucson basin and its relationship to the hydrogeologyen_US
dc.typeThesis-Reproduction (electronic)en_US
dc.typetexten_US
dc.contributor.chairLong, Austinen_US
dc.identifier.oclc213331121en_US
thesis.degree.grantorUniversity of Arizonaen_US
thesis.degree.levelmastersen_US
dc.contributor.committeememberDavis, Stanley N.en_US
dc.contributor.committeememberBasset, Randyen_US
thesis.degree.disciplineHydrology and Water Resourcesen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.nameM.S.en_US
dc.description.notehydrology collectionen_US
refterms.dateFOA2018-08-24T14:30:40Z
html.description.abstractA reconnaissance study of ²²²Rn concentrations in the ground water of the North-Central Tucson basin revealed a range of concentrations from 80 to 1400 pCi/L in wells, and 60 to 1260 pCi/L in domestic waters. Estimated degradation of Rn in water from wells to homes ranges from 8 to 50%. The interior well field of mid-Tucson, may represent background concentrations of Rn with a mean value of 250 pCi/L. The limited data define an anomalous trend (500 to 1400 pCVL) of ²²²Rn paralleling the Santa Cruz River area. 222Rn concentrations above 500 pCVL correlate positively with temperature, and no low temperature water contains high ²²²Rn levels. Weak inverse correlations of ²²²Rn with pumping bowl depth, pumping water level and average upper perforation intervals are evident. It is concluded that the source of ²²²Rn is close to the well bore. Considered are several possible hypothesis and mechanisms responsible for the anomalous Santa Cruz ²²²Rn trend, including mechanisms related to water circulation along the Santa Cruz fault, lithology, and aquifer compaction.


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