Analysis of divergent flow tracer tests in fractured granite, near Oracle, Arizona
AuthorAikens, Alan William,1958-
Groundwater flow -- Arizona -- Oracle Region -- Mathematical models.
Groundwater flow -- Arizona -- Pinal County -- Mathematical models.
Groundwater tracers -- Arizona -- Oracle Region -- Mathematical models.
Groundwater tracers -- Arizona -- Pinal County -- Mathematical models.
Committee ChairNeuman, Shlomo P.
MetadataShow full item record
PublisherThe University of Arizona.
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.
AbstractA computer model is extended and applied to analyze divergent flow tracer test data from a field experiment near Oracle, Arizona. The model can accommodate a pulse, step increase, and an arbitrary distribution of injection concentration with respect to time. The model is tested against three analytical solutions and is subjected to sensitivity analyses. The model is free of numerical dispersion with proper grid spacing and location of the external boundary. Analysis of field data using the model involves a curve matching procedure. An equivalent radial flow field is used to account for non-radial flow conditions by adjusting the flow rate and the mass that enters the flow field. Application of the model to field data yields a longitudinal dispersivity of 5.08 meters and a product of effective porosity and thickness of 0.009 meters. Since the test was not conducted under strict flow conditions, the above results are considered tentative.
Degree ProgramHydrology and Water Resources
Degree GrantorUniversity of Arizona
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