The cost of uniqueness in groundwater model calibration |
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Authors: | Catherine Moore John Doherty |
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Institution: | School of Engineering, University of Queensland, St. Lucia, Queensland 4072, Australia |
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Abstract: | Calibration of a groundwater model requires that hydraulic properties be estimated throughout a model domain. This generally constitutes an underdetermined inverse problem, for which a solution can only be found when some kind of regularization device is included in the inversion process. Inclusion of regularization in the calibration process can be implicit, for example through the use of zones of constant parameter value, or explicit, for example through solution of a constrained minimization problem in which parameters are made to respect preferred values, or preferred relationships, to the degree necessary for a unique solution to be obtained. |
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Keywords: | Regularization Model calibration Pilot points Resolution matrix PEST |
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