Influence of Mountain Topography on Receiver Layout in Transient Electromagnetic Method

Due to the great difficulty that mountainous terrain poses for resource exploration, the undulating terrain outside the emission source has an impact on the electromagnetic response. Further research is still needed for relevant issues. In this paper, a three-dimensional terrain-constrained airborne transient electromagnetic forward simulation is implemented based on the finite element method. Mountainous terrain is arranged outside the emission source, and the distance between the mountainous terrain and the emission source is quantitatively analyzed, and the error distribution caused by terrain at different receiving points is given. The impact of mountainous terrain on the electromagnetic response characteristics is analyzed, which provides a theoretical basis for the layout of receiving sources in airborne transient electromagnetic exploration.