AN INVESTIGATION OF THE MAGNETOTELLURIC TENSOR IMPEDANCE METHOD.

Abstract

A study was made of the magnetotelluric sounding method involving a tensor impedance relationship between the surface electric and magnetic micropulsation fields of the earth. A theoretical treatment of the tensor impedance (including the vertical magnetic field relationship) is offered with emphasis on its response to three-dimensional geometry. Some approximate mathematical models are proposed for use in interpreting three-dimensionality in the surface impedance. An experimental investigation conducted in central Texas is fully discussed. (Author)