Geoelectric imaging properties of traditional arrays and of the optimized Stummer configuration

S. Szalai, A. Koppán, K. Szokoli, L. Szarka

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

In this paper a systematic, semi-empirical comparison is presented between two-dimensional geoelectric models and their inversion images, obtained by using five different electrical resistivity arrays and an optimized Stummer configuration. Eight different models (more or less in order of growing complexity) are studied and both noise-free and noisy data cases are considered. The results show that (1) the quality of the inversion images obtained with traditional arrays depends significantly on the model and on the noise level, (2) among the traditional arrays it is definitely the dipole-dipole array that provides inversion images mostly similar to the geoelectric models, (3) the inversion images obtained by using the optimized Stummer configuration are even more similar to the original geoelectric model than those obtained by the dipole-dipole array. It means that the optimized Stummer array is even better than the best traditional array, the dipole-dipole array, especially in the deepest part of the inversion images. We conclude that in a general field situation the Stummer configuration is good enough for not being forced to search specific configurations. As presented, optimization procedures, involving null arrays could even further improve the quality of the inversion images obtained by using the Stummer configuration.

Original languageEnglish
Pages (from-to)51-62
Number of pages12
JournalNear Surface Geophysics
Volume11
Issue number1
DOIs
Publication statusPublished - Feb 2013

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configurations
inversions
dipoles
two dimensional models
inversion
electrical resistivity
optimization

ASJC Scopus subject areas

  • Geophysics

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Geoelectric imaging properties of traditional arrays and of the optimized Stummer configuration. / Szalai, S.; Koppán, A.; Szokoli, K.; Szarka, L.

In: Near Surface Geophysics, Vol. 11, No. 1, 02.2013, p. 51-62.

Research output: Contribution to journalArticle

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