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Electrical imaging for hydrogeology

August 8, 2022

Geophysical methods offer hydrogeologists unprecedented access to understanding subsurface parameters and processes. In this book, we outline the theory and application of electrical imaging methods, which inject current into the ground and measure the resultant potentials. These data are sensitive to rock type, grain size, porosity, pore fluid electrical conductivity, saturation, and temperature. Here, we describe the physical basis for electrical imaging, parallels between electrical flow equations and the groundwater flow equation, practical considerations for field investigations, data processing and inverse modeling of field data, and how to QA/QC data. We additionally cover two case studies, including a 2-D waterborne survey and a 4-D dataset from a biostimulation experiment.

Publication Year 2022
Title Electrical imaging for hydrogeology
Authors Kamini Singha, Timothy C. Johnson, Frederick Day-Lewis, Lee D. Slater
Publication Type Book
Publication Subtype Monograph
Index ID 70239346
Record Source USGS Publications Warehouse
USGS Organization WMA - Earth System Processes Division