Identifying an Optimal ERT Measurement Set to Estimate Contaminant Plume Mass (original) (raw)

Abstract

Heterogeneous hydrologic properties lead to complex pathways for solute transport and spatially nonuniform distributions of solute mass through time. This nonuniformity presents challenges for characterizing solute mass distributions using conventional point sampling. Furthermore, it is unclear how relatively few point measurements can be combined to give reasonable estimates of the total solute mass. These challenges have led to increased interest in the use of geophysical (especially electrical) methods to characterize solute distributions through space and time. Although individual measurements of electrical resistance are rapid, collecting sufficient data to constrain the estimation of the electrical resistivity structure can be expensive. The objective of this study is to determine whether an optimal set of ERT measurements can be identified for the purpose of estimating the total solute mass in a plume through time. An optimal measurement set produces an estimate of the solute...

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