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Abstract

Summary

This paper considers the possibilities of different transmitter and receiver systems located on drifting ice floes for electromagnetic soundings of deep-water regions of the Arctic shelf. Three systems are compared: the transmitter in the form of a circular electric dipole (CED) and the receiver in the form of a horizontal electrical line (HEL); the transmitter in the form of the horizontal electrical dipole (HED) and CED receiver; the HED transmitter and differential receivers located at different angles with respect to the transmitter. The comparative analysis of these systems is performed according to the following criteria: signal-to-noise ratio, signal measurability, and target detectability. This analysis is carried out with the use of 3D finite element modeling of geoelectromagnetic fields as well as the data measured in the Barents Sea. The approach to the magnetotelluric noise analysis is considered. It is shown that on the basis of the above-mentioned criteria, it is the differential system that has the most advantages in the conditions under consideration. This paper also shows that the signal can be measured with modern equipment for electrical exploration, the target detectability is high irrespective of the changes in the sea depths, and the signal-to-noise ratio is acceptable.

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/content/papers/10.3997/2214-4609.201800312
2018-04-09
2024-04-20

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References

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     [Google Scholar]
  11. Helwig, S. L., El Kaffas, A. W., Holten, T., Frafjord, O. and Eide, K.
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     [Google Scholar]
  12. Mogilatov, V., Goldman, M., Persova, M., Soloveichik, Y., Koshkina, Y., Trubacheva and O., Zlobinskiy, A.
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     [Google Scholar]
  13. Mogilatov, V.S., Persova, M.G., Soloveichik, Y.G. and ZlobinskiyA.V.
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  14. Persova, M.G., Soloveichik, Y.G., Vagin, D.V., Domnikov, P.A. and Tokareva, M.G.
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    [2015] Electromagnetic field analysis in the marine CSEM detection of homogeneous and inhomogeneous hydrocarbon 3D reservoirs. Journal of Applied Geophysics, 119, 147–155.
     [Google Scholar]
  16. Persova, M.G., Soloveichik, Y.G. and Trigubovich, G.M.
    [2011] Computer modeling of geoelectromagnetic fields in three-dimensional media by the finite element method. Izvestiya, Physics of the Solid Earth, 47(2), 79–89.
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  17. Veeken, P.C.H., Legeydo, P., Davidenko, Yu., Kudryavceva, E., Ivanov, S. and Chuvaev, A.
    [2009a] Benefits of the induced polarization geoelectrical method to hydrocarbon exploration. Geophysics, 74(2), рр. B47–B59.
     [Google Scholar]
  18. Veeken, P., Legeydo, P., Pesterev, I., Davidenko, Y., Kudryavceva, E. and Ivanov, S.
    [2009b] Geoelectric modelling with separation between electromagnetic and induced polarization field components. First Break, 27, 53–64.
     [Google Scholar]
http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201800312
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Electromagnetic Soundings in the Arctic Shelf in Conditions of Magnetotelluric Noise
Conference Proceedings 2018, 1 (2018); https://doi.org/10.3997/2214-4609.201800312
/content/papers/10.3997/2214-4609.201800312
/content/papers/10.3997/2214-4609.201800312
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