1887

Abstract

Summary

Electromagnetic coupling (EMC) between current and potential electrodes is a phenomenon which yields a dependence of the modullus and the phase of electrical resistivity with frequency. EMC plays a dual role in geophysical surveys because it is a source of spurious anomalies in spectral induced polarization (SIP) data ( ) but it helps to improve the analysis of the variation of electrical parameters in controlled source electromagnetic (CSEM) data ( ).

The characterization of EMC as a noise caused the emergence of several techniques of minimization and removal of its effect in SIP measurements both in time and frequency domains ( ). Furthermore, the removal of its effect may allow the analysis of the role of SIP in mineral discrimination ( ).

Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.201802741
2018-09-09
2024-04-25
Loading full text...

Full text loading...

References

  1. Barreto, A.N. and Dias, C.A.
    [2014] Fluid salinity, clay content, and permeability of rocks determined through complex resistivity partition fraction decomposition. Geophysics, 79(5), D333–D347.
    [Google Scholar]
  2. Çaglar, I.
    [2000] A method to remove electromagnetic coupling from induced polarization data for an exponential earth model. Pure & Applied Geophysics, 157(10), 1729–1748.
    [Google Scholar]
  3. Fullagar, P.K., Zhou, B. and Bourne, B.
    [2000] EM-coupling removal from time-domain IP data. Exploration Geophysics, 31(1/2), 134–139.
    [Google Scholar]
  4. Millett, F.B.
    [1967] Electromagnetic coupling of collinear dipoles on a uniform half space. Mining Geophysics, 2, 401–419.
    [Google Scholar]
  5. Mocitaiba, L.S.R., Sampaio, E.E.S. and de Lima, O.A.L.
    [2017] Effect of coupling noise on the interpretation of results of electromagnetic horizontal sounding and modeling. Studia Geophysica et Geodaetica, 61(4), 801–825.
    [Google Scholar]
  6. Nocedal, J. and Wright, S.J.
    [2006] Numerical optimization 2nd.
    [Google Scholar]
  7. Sampaio, E.E., Santos, A.B. and Sato, H.K.
    [1998] Spectral induced polarization and mineral discrimination. In: SEG Technical Program Expanded Abstracts 1998, Society of Exploration Geophysicists, 740–743.
    [Google Scholar]
  8. Wynn, J.C. and Zonge, K.L.
    [1977] Electromagnetic coupling. Geophysical prospecting, 25(1), 29–51.
    [Google Scholar]
  9. Xiang, J., Jones, N.B., Cheng, D. and Schlindwein, F.S.
    [2002] A new method to discriminate between a valid IP response and EM coupling effects. Geophysical prospecting, 50(6), 565–576.
    [Google Scholar]
http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201802741
Loading
/content/papers/10.3997/2214-4609.201802741
Loading

Data & Media loading...

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error