A "Nem konvencionális geoelektromos elrendezések" c. K49604. sz. OTKA-projekt eredményeibõl

Translated title of the contribution: From the results of the OTKA project "Non-conventional geoelectric arrays" K49604

S. Szalai, M. Varga, A. Novák, L. Szarka

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

In the frame of the OTKA project "Non-conventional geoelectric arrays" we systematically investigated geoelectric arrays which has never been applied in the fi eld measurements before or which has been applied, but later forgotten. In order to have an overview over all ever used geoelectric arrays we collected, classifi ed and presented them in a unifi ed way. It was investigated as well, which strategies were behind the development of these arrays and whether these strategies could be used in the future multielectrode investigations. We derived an equation to calculate parameter-sensitivity maps for arbitrary surface geoelectric arrays and all these maps were presented. We illustrated the usefulness of these maps through examples. We calculated furthermore the Roy and Apparao-, and Edwards-type depth of detection values for 30 different arrays, the resolution values of these arrays, the relation between the depth of investigation values and those of the resolution values and the relation between the depth of investigation values and the noise level, as well. Moreover, we give here the so-called depth of detectability values of 6 arrays for different models assuming different noise levels. The aforementioned theoretical investigations served as a basis for planning the fi eld measurements. First of all, the real positioning errors were measured under different fi eld conditions and the effect of this error type in the case of different multielectriode arrays was calculated. Tensorial geoelectric measurements were carried out, as well. We tested the applicability of 3D electrical resistivity tomography technique to detect landmines in different soil conditions and at various depths. We elaborated moreover a geoelectrical procedure which is able to map multidirectional fi ssure systems. We presented the so-called standardized pricking probe surveying technique and demonstrated its usefulness in an archaeological study. It should be mentioned, that this paper does not contain details. If the reader would like to reproduce the results demonstrated on the fi gures, the referred previous publications of the authors should be studied.

Original languageHungarian
Pages (from-to)209-226
Number of pages18
JournalMagyar Geofizika
Volume51
Issue number4
Publication statusPublished - 2010

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landmine
project
readers
surveying
positioning
tomography
planning
electrical resistivity
soils
probe
probes
sensitivity
noise level
parameter
soil condition
effect
detection

ASJC Scopus subject areas

  • Geology
  • Geophysics

Cite this

A "Nem konvencionális geoelektromos elrendezések" c. K49604. sz. OTKA-projekt eredményeibõl. / Szalai, S.; Varga, M.; Novák, A.; Szarka, L.

In: Magyar Geofizika, Vol. 51, No. 4, 2010, p. 209-226.

Research output: Contribution to journalArticle

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abstract = "In the frame of the OTKA project {"}Non-conventional geoelectric arrays{"} we systematically investigated geoelectric arrays which has never been applied in the fi eld measurements before or which has been applied, but later forgotten. In order to have an overview over all ever used geoelectric arrays we collected, classifi ed and presented them in a unifi ed way. It was investigated as well, which strategies were behind the development of these arrays and whether these strategies could be used in the future multielectrode investigations. We derived an equation to calculate parameter-sensitivity maps for arbitrary surface geoelectric arrays and all these maps were presented. We illustrated the usefulness of these maps through examples. We calculated furthermore the Roy and Apparao-, and Edwards-type depth of detection values for 30 different arrays, the resolution values of these arrays, the relation between the depth of investigation values and those of the resolution values and the relation between the depth of investigation values and the noise level, as well. Moreover, we give here the so-called depth of detectability values of 6 arrays for different models assuming different noise levels. The aforementioned theoretical investigations served as a basis for planning the fi eld measurements. First of all, the real positioning errors were measured under different fi eld conditions and the effect of this error type in the case of different multielectriode arrays was calculated. Tensorial geoelectric measurements were carried out, as well. We tested the applicability of 3D electrical resistivity tomography technique to detect landmines in different soil conditions and at various depths. We elaborated moreover a geoelectrical procedure which is able to map multidirectional fi ssure systems. We presented the so-called standardized pricking probe surveying technique and demonstrated its usefulness in an archaeological study. It should be mentioned, that this paper does not contain details. If the reader would like to reproduce the results demonstrated on the fi gures, the referred previous publications of the authors should be studied.",
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