Electromagnetic Methods in Applied Geophysics, Volume 1

This first of two volumes presents mathematical and physical foundations common to all EM methods and has chapters on numerical and analog modeling. The chapters on electrical properties of rocks and resistivity characteristics of geologic targets help readers envisage different kinds of ground structures that may be addressed and the effect of various factors on observed conductivities of rocks. Basic principles of modern instrument design are discussed in the chapter on detection of repetitive EM signals. The last chapter discusses the principles of EM inversion as a first step toward achieving the elusive goal of automatic interpretation of EM data.