Radiation from a current filament above a homogeneous Earth, with application to micropulsations

If electromagnetic radiations from ionospheric current systems are considered sources of micropulsations, it becomes instructive to examine the following model problem: What are the electric and magnetic fields in the vicinity of a plane, homogeneous earth due to a line current source above this model earth? As the micropulsation frequencies are quite low (order of 1 cps), the nearfield considerations become significant. The solution for this near field problem is presented and the fields at the earth's surface are evaluated for a set of parameter values chosen to approximate an ionospheric source at a typical micropulsation frequency.