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Application of Two Dimensional Electrical Resistivity Tomography (ERT) For Moisture Detection in Thessaloniki’s Rotunda Pillars and Three-Dimensional ERT Modeling Using Optimized Electrode Arrays

Prodromos Louvaris, Panagiotis Tsourlos, Gregory Tsokas, George Vargemezis, Nectaria Diamanti, Konstantinos Polydoropoulos et Georgia Zacharopoulou
p. 179-181

Résumé

– Moisture detection inside pillars using electrical resistivity tomography (ERT).

– Three-dimensional ERT modeling using non-conventional arrays.

– Jacobian matrix optimization method.

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Electrical Resistivity Tomography (ERT) is widely known for providing valuable information for numerous archaeological prospection problems in two and three dimensions. The purpose of this work was to detect possible moisture inside one of the main pillars of Thessaloniki’s Rotunda (Region of Macedonia, Greece), a Unesco heritage monument using various geophysical methods, including two and three dimensional (2D & 3D) ERTs, as well as the Ground Penetrating Radar method (GPR).

2D ERT lines were initially performed directly on the wall, in order to show the pillar’s current state using 23 electrodes with conventional arrays such as the dipole–dipole and multi-gradient (Fig. 1). Holes for fixing the electrodes, approximately 6 mm wide, had to be drilled in the mortar of the wall. The electrodes were placed along a single line with inter-electrode spacing set to 0.6 m, encircling a large part of the pillar to obtain the maximum possible coverage. To minimize contact resistance, a small ...

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Prodromos Louvaris, Panagiotis Tsourlos, Gregory Tsokas, George Vargemezis, Nectaria Diamanti, Konstantinos Polydoropoulos et Georgia Zacharopoulou, « Application of Two Dimensional Electrical Resistivity Tomography (ERT) For Moisture Detection in Thessaloniki’s Rotunda Pillars and Three-Dimensional ERT Modeling Using Optimized Electrode Arrays »ArcheoSciences, 45-1 | 2021, 179-181.

Référence électronique

Prodromos Louvaris, Panagiotis Tsourlos, Gregory Tsokas, George Vargemezis, Nectaria Diamanti, Konstantinos Polydoropoulos et Georgia Zacharopoulou, « Application of Two Dimensional Electrical Resistivity Tomography (ERT) For Moisture Detection in Thessaloniki’s Rotunda Pillars and Three-Dimensional ERT Modeling Using Optimized Electrode Arrays »ArcheoSciences [En ligne], 45-1 | 2021, mis en ligne le 16 août 2021, consulté le 24 septembre 2021. URL : http://journals.openedition.org/archeosciences/9443 ; DOI : https://doi.org/10.4000/archeosciences.9443

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Auteurs

Prodromos Louvaris

Corresponding author, Laboratory of Exploration Geophysics, Aristotle University of Thessaloniki

Panagiotis Tsourlos

Laboratory of Exploration Geophysics, Aristotle University of Thessaloniki

Articles du même auteur

Gregory Tsokas

Laboratory of Exploration Geophysics, Aristotle University of Thessaloniki

George Vargemezis

Laboratory of Exploration Geophysics, Aristotle University of Thessaloniki

Articles du même auteur

Nectaria Diamanti

Laboratory of Exploration Geophysics, Aristotle University of Thessaloniki

Konstantinos Polydoropoulos

Laboratory of Exploration Geophysics, Aristotle University of Thessaloniki

Georgia Zacharopoulou

Hellenic Ministry of Culture, Ephorate of Antiquities of Thessaloniki

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Droits d’auteur

Article L.111-1 du Code de la propriété intellectuelle.

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