1887

Abstract

Summary

The success of a subsurface exploration survey using ERT method depends largely on physical properties contrast, the complexity of target to be imaged and electronic array used. In this case, it is very important to consider the resolution and depth of research that can be achieved. On the one hand, the resolution depends on the spacing between the measuring points, which in turn depends on the number of electrodes available on the multielectrode resistivity meter used, while the penetration depth is a function of the separation between the current electrodes placed at both ends of the profile.

Then, for an instrument with low number of electrodes, there is a compromise between resolution and penetration. This restriction can be mitigated by using an array with enough extension for achieve the needed exploration depth and repeating the profile as many times as necessary with a lag equivalent to the spacing between adjacent electrodes needed for achieve the required resolution.

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/content/papers/10.3997/2214-4609.201802643
2018-09-09
2024-03-29
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References

  1. DahlinL.T.
    [1996] 2D resistivity surveying for environmental and engineering applications. First Break, 14(7), 275–283.
    [Google Scholar]
  2. GriffithsD.H. and BarkerR.H.
    [1993] Two-dimensional resistivity imaging and modelling in areas of complex geology. Journal of Applied Geophysics, 29, 211–226.
    [Google Scholar]
  3. HimiH., deMedeiros Souza A., Lovera, R., Medeiros Francelino, A.V., Monte Egito, L.C., Evangelista Teixeira, W.L., Pinheiro Lima Filho, F. and Casas, A.
    [2015] First attempt to characterize Neoproterozoic Stromatolites at Chapada Diamantina (Brazil) by geophysical methods. 24th European Meeting of Environmental and Engineering Geophysics. Turin.
    [Google Scholar]
  4. Loke, M.H.
    [2002] RES2DMOD ver. 3.01. Rapid 2D resistivity forward modelling using the finite-difference and finite-element methods. Geotomo Software. Manual
    [Google Scholar]
  5. LokeM.H.
    [2010] RES2DINV ver. 3.59 for Windows XP/Vista/7, Rapid 2-D Resistivity & IP inversion using the least-squares method.Geotomo Software. Manual
    [Google Scholar]
  6. MartoranaR., Fiandaca, G., Casas Ponsati, A. and Cosentino, P.L.
    [2009] Comparative tests on different multi-electrode arrays using models in near-surface geophysics. Journal of Geophysics and Engineering, 6(1), 1–20.
    [Google Scholar]
  7. OlayinkaA.I. and YaramanciU.
    [2000] Use of block inversion in the 2-D interpretation of apparent resistivity data and its comparison with smooth inversion. Journal of Applied Geophysics, 45, 63–82.
    [Google Scholar]
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