Far zone that is not wave zone after all? electromagnetic sounding induced by grounded electric dipole over conductive layers covered by non-conductor

In the field of the theoretical research of controlled source frequency sounding even in the sixties such a paper was published [1], that dealt with the electric component of the field induced by grounded electric dipole over a horizontally layered half-space included a non-conductive layer. The odd thing about the model computations was the unexpected difference in the far zone comparing with the magnetotelluric theoretical curves/wave-zone/ /Fig.1/. Both in apparent resistivity curven and phase curves interference phenomena can be seen that are characteristic features of the near and transitional zones.