ABSTRACT
This chapter presents case studies that involve the application of electromagnetic induction. The purpose of this presentation is to demonstrate the uses for and results of EMI. Examples will be given here that demonstrate the use of EMI to detect and locate buried features that are both metallic and non-metallic and the role of the two measured EMI components, in-phase and quadrature, in data interpretations. While EMI has successfully been used to locate and identify buried metal objects, voids, utilities, and disturbed soil, this is the first known application for delineating buried stone walls. The wrought iron fence appears in this component of the EMI data but the isolated ferrous metal object is absent. The most striking feature in this data is the approximate rectangular region of slightly elevated response extending in a north-south direction between about 9 and 16 m east.
