An indirect measure of below-ground electric field, conductivity, and dielectric constant

This paper uses experimental data obtained on a buried, conducting, parallel-plate sensor to evaluate the electric field beneath the air/ground interface. The sensor is described with a simple equivalent circuit, and the characteristic response is evaluated both in time and frequency. The agreement between the calculated and measured transmitted electric field is quite good for reasonable values of constant and frequency-dependent electrical conductivity and dielectric permittivity of the ground. The electrical properties of the ground were the only parameters that needed to be adjusted to provide agreement between theory and experiment. Those values taken were considered within reasonable bounds.