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Volume 14 Number 2
  • E-ISSN: 1365-2478

Abstract

ABSTRACT

A simple method of magnetotelluric interpretation is derived using the property that the earth currents flow in horizontal sheets. It is shown that when the depth is taken as two‐thirds of the Cagniard's depth of penetration (Cagniard, 1953), the mean resistivity‐over the depth is the same as the apparent resistivity of the medium. From a mean resistivity versus depth of penetration plot, resistivity can be easily computed at all depths of the sounding.

This method gives satisfactory results in a short time and makes it possible to interpret the soundings over media of several layers. However, the results are inaccurate near maximum and minimum points of the plot as well as in the zone of thin layers.

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2006-04-27
2024-04-20

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References

  1. Cagniard, L., 1953, “Basic Theory of the Magnetotelluric Method,” Geophysics, vol. 18, No. 3, p. 605–635.
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  2. Kolmakov, M. V. and Vladimirov, N. P., 1961, “On the Equivalence of Magnetotelluric Sounding Curves,” Bull. Acad. Sciences, U.S.S.R., Geophysics series, p. 349–354.
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  3. Vozoff, K., Hasegawa, H. and Ellis, R. M., 1963, “Results and Limitations of Magnetotelluric Surveys in Simple Geologic Situations,” Geophysics, vol. 28, No. 5, p. 465–473.
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  4. Wei, T.‐Y., 1963, “A High Sensitivity Magnetometer for Recording Short‐Period Magnetic Oscillations,” Bull. Acad. Sciences, U.S.S.R., Geophysics series, p. 659–662.
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  5. Yungul, S. H., 1961, “Magnetotelluric Sounding Three‐Layer Interpretation Curves,” Geophysics, vol. 26, p. 465–473.
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  • Article Type: Research Article

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