STATIC IMAGE PRINCIPLE FOR ANISOTROPIC-CONDUCTING HALF-SPACE PROBLEMS - PEC AND PMC BOUNDARIES

The image principle for an isotropic half-space bounded by perfect electric conductor (PEC) or perfect magnetic conductor (PMC) plane is presented in most elementary textbooks on electromagnetics. It is perhaps not so well known that this principle can also be generalized to anisotropic media in the static case. The anisotropic image method can be applied to geologic media that exhibit anisotropic electrical conductivity caused by the fractures and fissures in the rock. Such structures are important in the sites for disposal of nuclear waste. The characterization of these structures by electrical geophysical methods is essential because they form the main paths for groundwater flow. The image method presented is also relevant to problems arising in the traditional ore prospecting where a conducting ore body buried in an electrically anisotropic host rock generates secondary electric fields. -from Authors