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A Simple Relation to Constrain Groundwater Models Using Surface Deformation
Megan R M Brown, Shemin Ge1, Elizabeth Screaton2
1Department of Geological Sciences, University of Colorado Boulder, Boulder, CO.
Abstract:
A simple relation between pore pressure change and one-dimensional surface deformation is presented. The relation is for pore pressure change in a confined aquifer that causes surface deformation. It can be applied to groundwater models of any discretization and is computationally efficient. The estimated surface deformation from model results can be compared to observed surface deformation through geodetic techniques such as Differential Interferometric Synthetic Aperture Radar. Model parameters then are constrained using the observed surface deformation. The validity of this relation is shown through constraint of model parameters for surface uplift due to pore pressure increase caused by wastewater disposal injection.
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