3D Inversion of Automated Resistivity Profiling (ARP) Data

Papadopoulos, Nikos; Tsokas, Gregory N.; Dabas, Michel; Yi, Myeong‐Jong; Tsourlos, Panagiotis

doi:10.4000/archeosciences.1790

Cited by 4 publications

(4 citation statements)

References 11 publications

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“…Comparing the ERT results and pseudo-sections, it is possible to observe a good agreement of depths for apparent interfaces and spatial resistivity transients, with a slight overestimation of depths under conductive volumes. A similar behavior is also described by Papadopoulos et al [39,40]. Combining ARP, 0.50 m depth, with DTM data (Figure 15), it is possible to evaluate the independence and spatial relations of the widest ARP anomalies to each other.…”

Section: Discussionsupporting

confidence: 73%

“…This electrode array is designed to obtain simultaneously measurements of apparent resistivity simultaneously at three different subsoil depths. Papadopoulos et al [39,40] described a three-dimensional inversion of resistivity data acquired with the ARP system in order to obtain a reliable numerical model capable of describing the spatial distribution of the electrical resistivity in the subsoil of the investigated area. The inversion process described by the authors is based on the least squares method and establishes smoothness constraints in order to consider the instability of the model and the non-uniqueness of solutions [41].…”

Section: Introductionmentioning

confidence: 99%

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Automated Resistivity Profiling (ARP) to Explore Wide Archaeological Areas: The Prehistoric Site of Mont’e Prama, Sardinia, Italy

et al. 2020

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This paper deals with the resistivity continuous surveys on extensive area carried out at the Mont'e Prama archaeological site, in Sardinia (Italy). From 2013 to 2015, new research was performed using both non-destructive surveys and traditional archaeological excavations. The measurements were done in order to find geophysical anomalies related to unseen buried archaeological remains and to define the spatial extension of the ancient necropolis. The electrical resistivity of soils was measured by means of the Automated Resistivity Profiling (ARP©) system. This multi-pole method provided high-resolution maps of electrical resistivity in the whole investigated area using a computer-assisted acquisition tool, towed by a small vehicle. Through this acquisition layout, a surface of 22,800 m 2 was covered. The electrical resistivity data were derived in real time with centimetric horizontal precision through a differential GPS positioning system. Thanks to the simultaneous acquisition of ARP and GPS data, the rigorous georeferencing of the tridimensional experimental dataset was made possible, as well as the reconstruction of a detailed Digital Terrain Model. Here, the experimental results are analyzed and critically discussed by means of the integration of the results obtained by a high-resolution prospection performed with a multi-channel Ground Penetrating Radar system and taking into account other information derived from previous geological and archaeological studies. Geophysical results, jointly with topographic reconstruction, clearly permitted the identification of more interesting areas where future archaeological investigations could be focused.

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Section: Discussionsupporting

confidence: 73%

Section: Introductionmentioning

confidence: 99%

Automated Resistivity Profiling (ARP) to Explore Wide Archaeological Areas: The Prehistoric Site of Mont’e Prama, Sardinia, Italy

et al. 2020

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“…The purpose of electrical resistivity surveys is to determine underground resistivity contrasts by making measurements on the ground surface, which result in electrical anomalies of subsurface materials [7]. Electrical resistivity imaging has been developed to create accurate 2-D and 3-D computational resistivity models of subsurface cross-sections [9? ], and [10]. In all resistivity surveys electrode configuration plays an important role in determination of output resolution and depth of investigation.…”

Section: Introductionmentioning

confidence: 99%

CRSP, numerical results for an electrical resistivity array to detect underground cavities

Amini¹,

Ramazi²

2017

Open Geosciences

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This paper is devoted to the application of the Combined Resistivity Sounding and Profiling electrode configuration (CRSP) to detect underground cavities. Electrical resistivity surveying is among the most favorite geophysical methods due to its nondestructive and economical properties in a wide range of geosciences. Several types of the electrode arrays are applied to detect different certain objectives. In one hand, the electrode array plays an important role in determination of output resolution and depth of investigations in all resistivity surveys. On the other hand, they have their own merits and demerits in terms of depth of investigations, signal strength, and sensitivity to resistivity variations. In this article several synthetic models, simulating different conditions of cavity occurrence, were used to examine the responses of some conventional electrode arrays and also CRSP array. The results showed that CRSP electrode configuration can detect the desired objectives with a higher resolution rather than some other types of arrays. Also a field case study was discussed in which electrical resistivity approach was conducted in Abshenasan expressway (Tehran, Iran) U-turn bridge site for detecting potential cavities and/or filling loose materials. The results led to detect an aqueduct tunnel passing beneath the study area.

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“…Recent developments in survey technology focus on flexible single devices, which use several sensors of one type on mobile platforms. The most widely‐used methods in archaeological geophysics are magnetic gradiometer surveys (MGS), ground‐penetrating radar (GPR) and electrical resistivity imaging or tomography (ERI or ERT, see Leckebusch, ; Erkul et al ., , ; Schultze et al ., ; Gaffney, ; Papadopoulus et al ., ; Rabbel et al ., , and references cited therein).…”

Section: Introductionmentioning

confidence: 97%

Multi‐technique Geophysical Survey in and around the Hillfort Lossow – a Bronze and Iron Age Central Site in Brandenburg, Germany

Ullrich

Freibothe²,

Zoellner³

et al. 2016

Archaeological Prospection

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At the hillfort Lossow, integrated geophysical surveys were applied as part of an interdisciplinary research project. The importance of the prehistoric and Slavic site rests on various shafts within the hillfort, which are dated to the Early Iron Age and contain findings of offering processes associated with cult practices. At present more than 60 shafts with a depth of 5 to 7.5 m are known from test trenches and excavations inside the hillfort. In the settlement in front of the hillfort, large-scale magnetic gradiometer surveys and electrical resistivity mapping were applied to detect new archaeological features, verified by field surveys and targeted excavation. Inside the hillfort, a combination of magnetic gradiometer surveys, electrical resistivity imaging, ground-penetrating radar, and pulse-induction metal detection were used to reveal the complexity of structures like archaeological pits, shafts, pit houses and modern disturbances in varying soil types. These measurements resulted in a very complex signal of the geophysical data. We used an integrated approach for the interpretation of data from magnetic gradiometer surveys, pulse-induction metal detection and ground-penetrating radar surveys. Thus it became possible to interpret most of the detected anomalies as archaeological features from the Slavic period or modern metal artefacts in the topsoil. The detection of the Iron Age shafts covered by complex settlement structures only became possible using high resolution electrical resistivity tomography and low frequency ground-penetrating radar.

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3D Inversion of Automated Resistivity Profiling (ARP) Data

Cited by 4 publications

References 11 publications

Automated Resistivity Profiling (ARP) to Explore Wide Archaeological Areas: The Prehistoric Site of Mont’e Prama, Sardinia, Italy

Automated Resistivity Profiling (ARP) to Explore Wide Archaeological Areas: The Prehistoric Site of Mont’e Prama, Sardinia, Italy

CRSP, numerical results for an electrical resistivity array to detect underground cavities

Multi‐technique Geophysical Survey in and around the Hillfort Lossow – a Bronze and Iron Age Central Site in Brandenburg, Germany

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