Comparative tests on different multi-electrode arrays using models in near-surface geophysics

  title={Comparative tests on different multi-electrode arrays using models in near-surface geophysics},
  author={Raffaele Martorana and Gianluca Fiandaca and Albert Casas Ponsati and Pietro Cosentino},
  journal={Journal of Geophysics and Engineering},
In this paper, the response of different synthetic models to geoelectrical multi-electrode surveys is studied. The models considered are related to two main problems, which are very common in geophysical research regarding hydrogeology and engineering. The first class of models represents buried walls, similar archaeological remains or remains of buried foundations; the other class corresponds to a sea-water intrusion of a fresh water aquifer, which is generally studied in hydrogeophysics. A… 


ABSTRACT. The influence of array configurations on the resolution of subsurface electrical resistivity tomography (ERT) imaging is one of the most discussed factors when it comes to resistivity data


Numerical modeling of geological models was used to compare the resolution and effectiveness of 2D resistivity imaging survey with seven electrode arrays. The arrays used are the pole-dipole (PD),

Integrated geophysical survey for 3D modelling of a coastal aquifer polluted by seawater

Geophysical surveys are carried out in the coastal area of Petrosino (south-western Sicily) to study the time evolution of seawater contamination of the coastal aquifer, probably increased due to

Uncertainty of the 2D Resistivity Survey on the Subsurface Cavities

We examined the uncertainty of the two-dimensional (2D) resistivity method using conceptual cavity models. The experimental cavity study was conducted to validate numerical model results. Spatial

Influence of different array datasets on reliability of electrical resistivity tomography

Introduction. Over the past twenty years, progress in electronics and information technology have enabled the development of new geophysical instruments capable of simultaneously performing multiple

Different techniques for the assessment of geoelectrical data errors to improve the electrical images obtained at an industrial plant

The objective of this work was to characterise the bases of columns belonging to an industrial plant. We had to design a proper methodology for characterising these structures, in a place with

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

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

Comparison of Different Acquisition Patterns for 2D Tomographic Resistivity Surveys

A systematic comparison is presented between some 2D resistivity models and their images by the inversion of synthetic datasets relating to three different arrays, suitable for multichannel data



Cross-borehole resistivity tomography

Electrical resistivity tomography (ERT) is a method for determining the electrical resistivity distribution in a volume from discrete measurements of current and voltage made within the volume or on

Geophysical investigations in the Flumendosa River Delta, Sardinia (Italy) — Seismic reflection imaging

A geophysical investigation that included seismic-reflection surveying and time-domain electromagnetics (EM) was carried out in the Flumendosa River Delta plain in southeastern Sardinia, Italy. The

Electrical resistivity tomography to investigate geological structures of the earth's upper crust

It is important to have detailed knowledge of the electrical properties of the earth's crust in order to recognize geological structures and to understand tectonic processes. In the area surrounding

Combined application of dc and TEM to sea‐water intrusion mapping

A geoelectric survey using a dc resistivity method and a transient electromagnetic induction (TEM) method was carried out from 1986 to 1988. It was used to help map the lateral and vertical

Evaluation of Electromagnetic Methods for Rapid Mapping of Salt‐Water Interfaces in Coastal Aquifers

In coastal areas salt-water intrusion represents a significant threat to water quality in coastal aquifer systems. The electromagnetic method evaluated in this study proved to be rapid, very

Estimating depth of investigation in DC resistivity and IP surveys

In this paper, the term “depth of investigation” refers generically to the depth below which surface data are insensitive to the value of the physical property of the earth. Estimates of this depth

Geophysical investigations at the Himera archaeological site, northern Sicily

In this paper we present a geophysical survey that was carried out as a research activity during field trips to the Himera archaeological site, where relics of a large Greek settlement are still

A numerical comparison of 2D resistivity imaging with 10 electrode arrays

Numerical simulations are used to compare the resolution and efficiency of 2D resistivity imaging surveys for 10 electrode arrays. The arrays analysed include pole‐pole (PP), pole‐dipole (PD),

Approximate inverse mappings in DC resistivity problems

SUMMARY In an E-SCAN DC resistivity experiment a large amount of common source pole-pole potential data from many sources over a pre-designed survey grid are collected. The large number of DC

2-D and 3-D resistivity image reconstruction using crosshole data

Theoretical changes in the distribution of electrical potential near subsurface resistivity anomalies have been studied using two resistivity models. The results suggest that the greatest response