In the paper [1] we had stated the theoretical principles of common area observation systems for frequency - geometrical research of complicated 3-d inhomogeneous medium, using seismic and electromagnetic fields with local excitation sources. Taking in account the common morphology of the normal field, for seismic research it had been taken a local source of vertical strength, for the electromagnetic case - vertical magnetic dipole. It is of great significance for receiving of comparing information about the structure and physical features of the medium, using both wave fields, to define the similarity criterion for observation systems. In that paper we suggest such method for defining of such criterion for constructing elastic and geoelectric 3-d model. We had elaborated two original algorithms, which use as an input information 3 components of the displacement field and three components of the alternating magnetic field.