Persistent Link:
http://hdl.handle.net/10150/291471
Title:
Analysis of sediment transport in an ephemeral stream
Author:
Roberts, Richard Allan, 1958-
Issue Date:
1990
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:
Ephemeral stream channels may be modified considerably by aggradation, degradation or lateral migration. Computer programs utilizing a variety of sediment-discharge equations have been developed to predict these changes. The equation of Laursen was examined in this study. Suspended and bed load samples were collected from the Santa Cruz River during 12 flow events. Sediment compositions from the dry wash were used in the Laursen equation to predict that data. Sampled suspended load plotted as a scatter band, but the variation could be explained by slight changes in the bed material composition during flow. Predicted values correlated well with observed data during moderate discharges, but not at high or low flows, possibly because fine material was either re-suspended or supplied from upstream in those ranges. Removing the wash load from consideration did not improve the correlation significantly. Bed load seemed to be adequately predicted by the Laursen equation.
Type:
text; Thesis-Reproduction (electronic)
Keywords:
Hydrology.; Engineering, Civil.; Engineering, Mechanical.
Degree Name:
M.S.
Degree Level:
masters
Degree Program:
Graduate College; Civil Engineering and Engineering Mechanics
Degree Grantor:
University of Arizona
Advisor:
Laursen, Emmett M.

Full metadata record

DC FieldValue Language
dc.language.isoen_USen_US
dc.titleAnalysis of sediment transport in an ephemeral streamen_US
dc.creatorRoberts, Richard Allan, 1958-en_US
dc.contributor.authorRoberts, Richard Allan, 1958-en_US
dc.date.issued1990en_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.abstractEphemeral stream channels may be modified considerably by aggradation, degradation or lateral migration. Computer programs utilizing a variety of sediment-discharge equations have been developed to predict these changes. The equation of Laursen was examined in this study. Suspended and bed load samples were collected from the Santa Cruz River during 12 flow events. Sediment compositions from the dry wash were used in the Laursen equation to predict that data. Sampled suspended load plotted as a scatter band, but the variation could be explained by slight changes in the bed material composition during flow. Predicted values correlated well with observed data during moderate discharges, but not at high or low flows, possibly because fine material was either re-suspended or supplied from upstream in those ranges. Removing the wash load from consideration did not improve the correlation significantly. Bed load seemed to be adequately predicted by the Laursen equation.en_US
dc.typetexten_US
dc.typeThesis-Reproduction (electronic)en_US
dc.subjectHydrology.en_US
dc.subjectEngineering, Civil.en_US
dc.subjectEngineering, Mechanical.en_US
thesis.degree.nameM.S.en_US
thesis.degree.levelmastersen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.disciplineCivil Engineering and Engineering Mechanicsen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.advisorLaursen, Emmett M.en_US
dc.identifier.proquest1341496en_US
dc.identifier.bibrecord.b26354755en_US
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