Persistent Link:
http://hdl.handle.net/10150/191917
Title:
Parameter identifiability of an erosion simulation model
Author:
Blau, Jeff Bryant,1957-
Issue Date:
1986
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:
An erosion simulation model based on the kinematic equations of flow and advective transport of sediment with rill and interrill source terms is written in a finite difference form. The accuracy of the numerical solution is examined using the analytical solutions to the model for some special cases. The parameter identifiability of the model is examined using contour plots of the objective function response surface. The erosion equation is non-dimensionalized to allow for the examination of all parameter combinations. Two optimization routines are used to identify parameters for theoretical, theoretical with added error, and observed sediment concentration data. The finite difference formulation used is a suitable numerical scheme for this type of erosion model. Parameter identifiability of this erosion model is difficult because of parameter insensitivity and parameter interactions for some cases. Both the numerical scheme and the random error have little effect on parameter identifiability.
Type:
Thesis-Reproduction (electronic); text
LCSH Subjects:
Hydrology.; Erosion -- Models.; Land use -- Management -- Models.; Runoff -- Models.; Soil conservation.
Degree Name:
M.S.
Degree Level:
masters
Degree Program:
Hydrology and Water Resources; Graduate College
Degree Grantor:
University of Arizona
Committee Chair:
Woolhiser, David A.; Ince, Simon

Full metadata record

DC FieldValue Language
dc.language.isoenen_US
dc.titleParameter identifiability of an erosion simulation modelen_US
dc.creatorBlau, Jeff Bryant,1957-en_US
dc.contributor.authorBlau, Jeff Bryant,1957-en_US
dc.date.issued1986en_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.abstractAn erosion simulation model based on the kinematic equations of flow and advective transport of sediment with rill and interrill source terms is written in a finite difference form. The accuracy of the numerical solution is examined using the analytical solutions to the model for some special cases. The parameter identifiability of the model is examined using contour plots of the objective function response surface. The erosion equation is non-dimensionalized to allow for the examination of all parameter combinations. Two optimization routines are used to identify parameters for theoretical, theoretical with added error, and observed sediment concentration data. The finite difference formulation used is a suitable numerical scheme for this type of erosion model. Parameter identifiability of this erosion model is difficult because of parameter insensitivity and parameter interactions for some cases. Both the numerical scheme and the random error have little effect on parameter identifiability.en_US
dc.description.notehydrology collectionen_US
dc.typeThesis-Reproduction (electronic)en_US
dc.typetexten_US
dc.subject.lcshHydrology.en_US
dc.subject.lcshErosion -- Models.en_US
dc.subject.lcshLand use -- Management -- Models.en_US
dc.subject.lcshRunoff -- Models.en_US
dc.subject.lcshSoil conservation.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.chairWoolhiser, David A.en_US
dc.contributor.chairInce, Simonen_US
dc.identifier.oclc213416670en_US
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