The geophysical capabilities and expertise of IGS researchers can be a valuable addition to a wide variety of research projects involving Iowa’s subsurface.
The IGS has an array of geophysical capabilities that can be utilized to better visualize, understand, and characterize Iowa’s subsurface. Geophysical methods employed by IGS researches includes electrical resistivity (ER), electromagnetic terrain conductivity (EM), seismic refraction, passive seismic imaging, and seismic monitoring. These methods have a variety of research applications ranging contributing to the many disciplines, including geology, hydrogeology, and geotechnical engineering. IGS researchers have used geophysics to identify extents and thicknesses of alluvial aquifers, develop relationships between geophysical and hydrogeologic parameters, find historic locations of meandering rivers, locate underground sinkholes and historic cellars, determine the depth to bedrock, identify voids and fractures in bedrock, and characterize different subsurface soil characteristics within local field sites.