heterogeneous conductive layer.
The pictures above show the example of SLPROG application for numerical modeling
of electromagnetic fields induced by an external plane wave with period 1 hour in inhomogeneous model of volcano Etna.
The model consists of sedimentary cover with conductance S and underlying layered
cross-section. Model is excited by plane wave with period 1 hour. Right picture demonstrates behaviour of real part of vertical component of magnetic field. Primary magnetic field is polarized in north-east direction.