Transient Electromagnetic Fields Due to a Circular Current Loop Perpendicular or Parallel to a Conducting Half-Space

Currents having the form of a step function or a pulse flowing in a circular loop placed above a conducting medium occupying the half-space give rise to eddy currents within the conducting material. The loop is located either perpendicular or parallel to the interface of the two half-spaces. For the transient state the distribution of eddy currents is determined inside the conducting medium, the distribution of the magnetic field is also determined in the air region which occupies the other half-space.