Application of electromagnetic geophysics (EMG) technology to subsurface investigations

Abstract

A study was performed to investigate current methods for using electromagnetic geophysics (EMG) technology to assess the capabilities, limitations, and costs associated with these methods, and to identify EMG consultants and equipment that may be of benefit to the Wisconsin Department of Transportation (WisDOT) for performing site investigations in Wisconsin. Based on the results of this study, six EMG methods were identified and described. Based on the information provided by 10 consultants, several consultants who may be attractive candidates for providing EMG services to WisDOT were identified. Information was also compiled on 17 pieces of EMG equipment manufactured by 7 companies. This report provides a comprehensive overview of EMG in terms of description of methods, synopsis of consultant capabilities, and a summary of available EMG equipment.