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f Far zone that is not wave zone after all? electromagnetic sounding induced by grounded electric dipole over conductive layers covered by non-conductor
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 54th EAEG Meeting, Jun 1992, cp-45-00332
- ISBN: 978-90-73781-04-7
Abstract
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.