Show simple item record

dc.contributor.advisorSharp, John Malcolm, Jr., 1944-
dc.creatorMcMahon, Peter B.
dc.date.accessioned2017-05-18T21:03:06Z
dc.date.available2017-05-18T21:03:06Z
dc.date.issued1984
dc.identifierdoi:10.15781/T2P55DN87
dc.identifier.urihttp://hdl.handle.net/2152/46927
dc.description.abstractIn this study a computer model was used to simulate dissolved chloride movement through alluvial sediments which border the Canadian River in Hutchinson County, Texas. Hydraulic conductivity values of the sediments were required in order to calculate groundwater velocities in the system. The most realistic representation of conductivity variations in porous media is expressed by frequency distributions rather than by averaged values of conductivity. Numerous sedimentological environments exhibit log-normal conductivity distributions; therefore, one was used in this investigation. A number of conclusions can be based on the results of this study. First, certain conductivity distributions account for the observed spread of chloride in the aquifer. The best match of observed chloride dispersion was obtained with autocorrelated log-normal conductivity distributions. Secondly, the degree of spatial dependence between adjacent conductivity values affected numerous results. These include the amount of chloride dispersion and the extent of uncertainty in calculated hydraulic head and chloride distributions. For comparative purposes the chloride distribution was also modeled using an average conductivity value. Under this condition the chloride plume moved at an average rate of 10 meters/year. Another result was that longitudinal and transverse dispersivities of 46 meters and 9 meters, respectively, were required to obtain a match between observed and modeled chloride distributions.en_US
dc.format.mediumelectronicen_US
dc.language.isoengen_US
dc.relation.ispartofUT Electronic Theses and Dissertationsen_US
dc.rightsCopyright © is held by the author. Presentation of this material on the Libraries' web site by University Libraries, The University of Texas at Austin was made possible under a limited license grant from the author who has retained all copyrights in the works.en_US
dc.subject.lcshGroundwater flow--Texas--Hutchinson County--Computer simulation
dc.subject.lcshGroundwater--Texas--Hutchinson County--Computer simulation
dc.subject.lcshSediment transport--Texas--Hutchinson County--Computer simulation
dc.subject.lcshSoil permeability--Texas--Hutchinson County--Computer simulation
dc.titleComputer simulation of mass transport in groundwater : affect of macroscopic heterogeneities in hydraulic conductivityen_US
dc.title.alternativeComputer simulation of mass transport in groundwater : effect of macroscopic heterogeneities in hydraulic conductivityen_US
dc.typeThesisen_US
dc.description.departmentGeological Sciencesen_US
dc.type.genreThesisen_US
thesis.degree.departmentGeological Sciencesen_US
thesis.degree.disciplineGeological Sciencesen_US
thesis.degree.grantorUniversity of Texas at Austinen_US
thesis.degree.levelMastersen_US
thesis.degree.nameMaster of Artsen_US
dc.rights.restrictionOpenen_US


Files in this item

Thumbnail
Thumbnail

This item appears in the following Collection(s)

Show simple item record