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Remarques sur l'interpretation des sondages de polarisation provoquee essai de theorie quantitativeNormal access

Authors: Pham Ngoc, J. Roussel and et D. Tournier
Journal name: Geophysical Prospecting
Issue: Vol 18, No 1, March 1970 pp. 34 - 46
DOI: 10.1111/j.1365-2478.1970.tb02093.x
Organisations: Wiley
Language: English
Info: Article, PDF ( 683.82Kb )

Summary:
The transient phenomena associated with induced polarization are very complex and it is necessary to have both a proper understanding of the physical processes and a good supply of mathematical aids in order to make any advance in the quantitative interpretation of I.P. surveys.

The analogy between the classical electrical sounding method and the induced polarization sounding method has led a number of workers to interpret the results of the latter like the results of the former. To clarify this idea, it seems very interesting to calculate a mathematical model in order to know the form of the anomaly that can be probably expected.

The case of a thin horizontal polarizable layer, with the same uniform and isotropic conductibility as the homogeneous background, has been studied in this paper.

The result of the calculation for the case of a single current electrode and a single potential electrode is given. From these data, the theoretical curve of IP sounding using the Wenner electrode array is computed.

The master curve is compared with experimental curves obtained on scale models. A good correlation between these curves is noticed. In addition, it can be concluded that the mathematical model is proving the validity of the experiments on interpretation scale models.


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