A NEW METHOD FOR ELECTRICAL IMAGING OF THE ARBUCKLE-SIMPSON AQUIFER, OKLAHOMA

A new method for electrical imaging has been developed to help generate a conceptual model of the Arbuckle-Simpson aquifer in southern Oklahoma. This research is part of the Arbuckle-Simpson Hydrology Study to access ground water-surface water interactions in the approximately 800 meter thick aquifer. Data from electrical conductivity logs are limited to near borehole and data from multi-electrode resistivity arrays are limited to near surface. The limitations of these electrical imaging methods make them poorly suited for the task of generating 2D images of significant portions of the aquifer. The new method for electrical imaging combines these two techniques enabling a significantly greater coverage. A multi-electrode marine resistivity cable provides the capability to produce high resolution images to a depth of approximately 450 meters. The images will help determine the hydrostratigraphy of the aquifer and evaluate the flow properties of associated faults.