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E. Yu. Ermolin
E. Yu. Ermolin
Saint Petersburg State Mining Institute (Technical University)
Saint Petersburg State Mining Institute (Technical University)
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Articles

Application of up-to-date electric exploration technologies in mineral deposits prospecting
  • Date submitted
    2016-10-13
  • Date published
    2015-02-01

Application of vertical magnetic component in magnetotelluric method to estimate parameters of anomalous objects away from the profile line

The problem of estimating the effect of anomalous bodies situated away from the profile line occurs in magnetotelluric data interpretation, as well as in other geophysical methods. In this case using of magnetic-variation profiling (MVP) data is important. MVP method can be used together with magnetotelluric sounding (MTS) method. It is done by adding a channel for measuring a vertical magnetic component (Hz). MTS and MVP methods can be applied together due to the use of precise tripods. MTS and MVP methods together increase the possibility of es-timating the effect of anomalous bodies situated away from the profile line. The research target is to determine parameters of an anomalous conductive body situated away from and parallel to the profile line. This work shows how the depth of a 2D conductive body situated away from the station can be determined by tipper frequency responses (on condition the distance between the station and the body is specified). The step-by- step method for determining the depth of an anomalous body has been used in this work. The introduced method allows avoiding gross mis-takes in interpretation, as well as constructing a valid 3D model.

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E. Yu. Ermolin, A. I. Ingerov, Kh. M. Shaaban (2015) Application of vertical magnetic component in magnetotelluric method to estimate parameters of anomalous objects away from the profile line. Journal of Mining Institute. Vol 212. p. 95.
Application of the modern geophysical technologies for prospecting and exploration of mineral deposits
  • Date submitted
    2016-11-25
  • Date published
    2011-06-01

Amplitude-phase correction of magnitotellurie impedance curves

The regularities of the amplitudes and phases connections of magnitotelluric (MT) impedance tensor components for 1D, 2D and 3D geoelectrical synthetic models have been considered. The amplitude-phase correction allows to improve the quality of data processing results both for the main and for the additional impedances. It also gives a possibility to suppress biased data for noise pollution data. Recommendations on accuracy rising of determination of tensor impedance components in the MT-data processing have been defined on the base of found regularities. Examples of processing of field MT-data received on the basis of MTU equipment by «Phoenix Geophysics Ltd» (Canada) have been considered.

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I. S. Fel'dman, E. Yu. Ermolin (2011) Amplitude-phase correction of magnitotellurie impedance curves. Journal of Mining Institute. Vol 194. p. 200.
Geology and geophsics
  • Date submitted
    2016-12-07
  • Date published
    2011-01-01

Amplitude-phase correction of additional MT impedance curves for two dimensional structures

The regularities of the amplitudes and phases connections of MT-impedance tensor components for 2D geoelectrical synthetic models have been considered. The amplitude-phase correction (APC) allows to improve the quality of data processing results both for the main and for the additional impedances. It also gives a possibility to suppress biased data for noise pollution data. Recommendations on accuracy rising of determination of tensor impedance components in the MT-data processing have been defined on the base of found regularities. 

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E. Yu. Ermolin (2011) Amplitude-phase correction of additional MT impedance curves for two dimensional structures. Journal of Mining Institute. Vol 189. p. 23.
Geology and geophsics
  • Date submitted
    2016-12-07
  • Date published
    2011-01-01

The depth estimation of 2D conductive isometrical bodies by singular points at the tipper frequency characteristic

The relation between parameters of 2D anomaly body and features of vertical sections of tipper amplitude are considered in this paper. According to investigations the depth of center, top and bottom of conductive body is connected with geometrical distance between two symmetrically located positive extremes in tipper pseudo-sections. In addition the tipper amplitude in extremes decreases on account of increasing depth of anomalous body. The described regularities can be used for MT projects planning and quantitative estimation of anomalous body parameters using tipper pseudo-section constructed from field data. 

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E. Yu. Ermolin, O. Ingerov (2011) The depth estimation of 2D conductive isometrical bodies by singular points at the tipper frequency characteristic. Journal of Mining Institute. Vol 189. p. 27.