Controlled source audio magneto-telluric (CSAMT) method has received increasing attention for successful application as a subsurface imaging tool in mining, petroleum exploration, deep sea environmental investigations, groundwater studies, and geothermal exploration. Remarkable results were obtained by using CSAMT surveys to find fault and fissure-type water storage structures. The CSAMT method has also been extremely good at searching for certain ore structures, being able to delineate the abnormal shape and position of the body. In the prediction of geology in advance of mining, it is important to locate faults and karst caves. CSAMT has been successful in preventing and controlling disasters by detecting the distribution of water-bearing ore zones in the roof and floor ahead of extraction. Transient electromagnetic method (TEM) is a wide used geophysical exploration method which plays an increasingly important role in mineral exploration, environment and engineering studies, disaster forecasting, groundwater exploration, groundwater detection, underground shallow cavern location tunnel prediction. With the increased demand for a high resolution and an accurate imaging, it is necessary to further study the methodologies of the CSAMT and TEM so as to meet the requirement for fine structural interpretation. To meet this demand, worldwide researchers need to communicate and cooperate with each other in an efficient and effective way.
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