Transient Signals from a Buried Magnetic Dipole

The solution for a pulse-excited magnetic dipole is carried through for a conducting half-space model of the earth. All displacement currents are neglected so the solution is not valid at very small times in the transient response. It is shown that the waveforms of the magnetic field components on the surface depend both on the conductivity of the earth and the geometrical parameters of the problem. The results have possible application to electromagnetic signaling and direction finding for a buried source.