A CIRCULAR ELECTRIC DIPOLE: A TRANSMITTER FOR TEM SURVEYS
V.S. Mogilatov1,2, A.V. Zlobinsky3
1A.A. Trofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch of the Russian Academy of Sciences, pr. Akademika Koptyuga 3, Novosibirsk, 630090, Russia
2Novosibirsk State University, ul. Pirogova 2, Novosibirsk, 630090, Russia
3NTK ZaVeT-GEO LLC, ul. Voskhod 26/1, office 56, Novosibirsk, 630102, Russia
Keywords: TEM survey, circular electric dipole, TM field, vertical electric sounding
Abstract
Much experience has been gained lately in the use of a radial current source, the so-called circular electric dipole (CED), as a transmitter in transient electromagnetic (TEM) surveys. CED is a source of alternating transverse magnetic (TM) polarized field, a surface analog of a vertical electrical line in VES. In the course of two recent decades, the method has been developed theoretically and tested through the field practice. The respective published results are expected to provide an idea of TEM soundings with the optional use of either TE or TM mode. In this paper we report some new theoretical aspects and share our field experience of surveys with an CED system.
DOI: http://dx.doi.org/10.1016/j.rgg.2014.10.009
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