We present a combined electromagnetic method which consist of Audio Magnetotellurics (AMT) and Transient Electromagnetic method (TEM) to the utilize in the selecting sites for ultra high voltage power plant. The inversion profile gives the underground resistivity distribution for the power engineers to select proper ground site location. The result is satisfactory and some ground sites have been established already, indicating that electromagnetic method is suitable for selecting the ground site for ultra high voltage power plant.

Complex resistivity (CR) is one of an electromagnetic method which plays an important role in the exploration of oil and gas, underground water as well as solid mineral resources in recent years. Nowadays China is under fast developing and there is still a big gap between the supply and demand of mineral resources. As an effective controlled source electromagnetic method, CR method can be easily used to judge the content of resources, determine the target reservoir and select a favorable drilling area. In this paper, an introduction to CR method and its application in copper mine exploration in west China is present. The result shows that CR is an effective electromagnetic method in the exploration of deep mineral resources.