Model Calibration Techniques for Use with the Analytic Element Method

Barry F. Power, Randal Barnes

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


The combination of the analytic element method and a nonlinear parameter estimation technique forges a computationally efficient, information‐rich, and cost‐effective solution to the inverse ground‐water flow problem. The recommended model calibration method uses a nonlinear least‐squares objective, as quantified by misfitting the measured and modeled heads, and a modified Levenberg‐Marquardt algorithm. As detailed and demonstrated by a steady‐state regional aquifer model of Bemidji, Minnesota, automated calibration techniques make ground‐water modeling feasible for a wider variety of projects where tight budgets and a lack of tools may have previously made such modeling inappropriate.

Original languageEnglish (US)
Pages (from-to)91-97
Number of pages7
Issue number1
StatePublished - Jan 1993


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