Electrical Resistivity Imaging (ERI)

Electrical Resistivity Imaging (ERI) is a geophysical technique used to image contrasts in the electrical properties of the subsurface.  This technique is useful for imaging depth to bedrock (bedrock topography), fractures, voids, and other subsurface features containing electrical contrasts.  Peak Geophysics uses innovative survey designs with its ERI surveys to enhance visualization of the subsurface.  We also provide services to analyze for data integrity.  The profile below was determined to have insufficient data at a certain depth and was cropped so that misleading data was not submitted.  Below are three views (profile, plan and perspective) of an ERI survey conducted in Easton, PA showing bedrock topography and potential sinkholes.