Geoelectrical Survey Performance and Evaluation, Walter F. George Reservoir, Alabama-Georgia.

摘要

A field demonstration of the Menard method of electrical resistivity surveying was conducted at the Walter F. George Reservoir in December 1969. The test afforded the WES an opportunity to evaluate the effectiveness of the method in detecting and delineating subsurface openings in which moving groundwater (underseepage) was present. The Menard method, similar in equipment, field procedure, and data-processing techniques to standard resistivity methods, proved to be effective in detecting anomalies caused by the electrofiltration effect that is created by moving groundwater. It has been concluded that the geoelectrical method is superior to other techniques in detecting underseepage where it can be applied intensively in small areas; however, application in surveys of large areas with essentially unknown subsurface conditions probably would not be advantageous.