Combination of EM and DC Measurements For Upper Crustal Studies |
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| Authors: | T Harinarayana |
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| Institution: | (1) National Geophysical Research Institute, Hyderabad, India |
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| Abstract: | Joint use of electrical and electromagnetic techniques is found to be useful for better understanding of the subsurface electrical resistivity structure. Detection of thin buried layers (conductive or resistive), which may be difficult to identify by a single method alone, could possibly be identified by a combination of methods. Further, distortion or error in the observed data could be corrected, as both methods depend on the same physical parameter, namely electrical conductivity. Although these methods have been known for the last several decades, joint interpretation of data sets is increasingly being used in recent years, especially for complex geological problems. This review covers the main results of the combination of these methods, giving more emphasis to case histories. |
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| Keywords: | electric electromagnetic joint study |
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