Airborne electromagnetic (AEM) methods are increasingly being used as tools of geological mapping, groundwater exploration and prospecting for coal and...
Investigations in many parts of the world have indicated that resistivity of saprolite (a chloritization zone at the base of the weathering profile) depends...
Accurate knowledge of the location of subbottom ice-bonded permafrost is essential in planning major infrastructure projects such as pipelines in the Arctic. A...
Most of the airborne and ground VLF instruments presently used measure the total-field response in addition to field ratios. Results of surveys using these...
Variations in intensity of the primary VLF-EM field have a significant effect on the quality of airborne and ground surveys in which the total field is...