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International Journal of Geophysics
Volume 2013 (2013), Article ID 160915, 8 pages
http://dx.doi.org/10.1155/2013/160915
Research Article

Preliminary Results of Marine Electromagnetic Sounding with a Powerful, Remote Source in Kola Bay off the Barents Sea

1Kola Science Centre, Polar Geophysical Institute, Russian Academy of Science, Murmansk, 15 Khalturina Street, Murmansk 183010, Russia
2Geoelectromagnetic Research Centre of Schmidt Institute of Physics of the Earth, Russian Academy of Sciences, P.O. Box 30, Troitsk, Moscow Region 142190, Russia
3Kurchatov Institute, Moscow, 1 Akademika Kurchatova Square, Moscow 123182, Russia
4Moscow State University, Moscow, GSP-1 Leninskie Gory, Moscow 119991, Russia
5Institute of Terrestrial Magnetism, Ionosphere, and Radiowave Propagation, Russian Academy of Sciences, St. Petersburg Branch, 1 Mendeleevskaya Linia, St. Petersburg 199034, Russia

Received 28 September 2012; Accepted 30 December 2012

Academic Editor: Michael S. Zhdanov

Copyright © 2013 Valery Grigoryev et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

We present an experiment conducted in Kola Bay off the Barents Sea in which new, six-component electromagnetic seafloor receivers were tested. Signals from a powerful, remote super-long wave (SLW) transmitter at several frequencies on the order of tens Hz were recorded at the six sites along a profile across Kola Bay. In spite of the fact that, for technical reasons, not all the components were successfully recorded at every site, the quality of the experimental data was quite satisfactory. The experiment resulted in the successful simulation of an electromagnetic field by the integral equation method. An initial geoelectric model reflecting the main features of the regional geology produced field values that differed greatly from the experimental ones. However, step-by-step modification of the original model considerably improved the fit of the fields. Thereby specific features of the regional geology, in particular the fault tectonics, were able to be corrected. These preliminary results open the possibility of inverse problem solving with more reliable geological conclusions.