Indirect preservation of Egyptian historical sites using 3D GPR survey

Gaber, Ahmed; El-Qady, Gad; Khozym, Ashraf; Abdallatif, T. F.; Kamal, Sherif A.

doi:10.1016/j.ejrs.2017.11.004

Cited by 8 publications

(9 citation statements)

References 5 publications

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“…The limitation of this technology, however, comes from the analysis of the seismic data, which is complex and can only be understood by experts in the field. In addition, the wide approach to 2D GPR profile investigations does not wholly determine the embedded object's true geometry and location [5]. Therefore, this paper proposes the Synthetic Aperture Focusing Technique and 3D interpolation by threshold to reconstruct the 3D model of a buried metal sphere.…”

Section: Introductionmentioning

confidence: 99%

3D Reconstruction of embedded object using ground penetrating radar

Fadil,

Ali,

Zaidi

et al. 2023

J. Phys.: Conf. Ser.

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Ground Penetrating Radar (GPR) is a non-destructive device widely used to locate and map underground utilities such as pipes, cables, etc. Its principle is based on the reflection signal of a transmitter-receiver antenna that strikes underground objects by means of the propagation of a short pulse of electromagnetic waves into the ground. The GPR will produce a hyperbolic curve as a result of the object’s presence. Accurate interpretation of hyperbola curves is greatly important and highly depends on user expertise; thus, it is considered a challenge. To address this issue, this study aims to develop 3D reconstructions of embedded objects. In this study, C-scan images were acquired, and 3D interpolation and the Synthetic Aperture Focusing Technique (SAFT) were introduced. In this framework, the acquired data is subjected to pre-processing techniques via time-zero correction, background removal using average background subtraction, and Kirchoff’s migration method. The software Reflex 3D Scan has been used to analyse and preprocess the 3D reconstruction of embedded objects. The obtained results show that 3D interpolation and SAFT methods are not only able to reconstruct 3D models but are also able to reveal information on the dimension and location of the buried object represented by voxel points in the 3D space cube.

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Section: Introductionmentioning

confidence: 99%

3D Reconstruction of embedded object using ground penetrating radar

Fadil,

Ali,

Zaidi

et al. 2023

J. Phys.: Conf. Ser.

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“…Geophysical studies have been widely used since the last decade for archaeological prospecting in many sites around the world (e.g., Arka et al, 2019, Conyers, 2013Drahor, 2006Drahor, , 2011Gaber et al, 2018;Imposa et al, 2018;Kampke, 1999;Zhao et al, 2015Zhao et al, , 2018. The geophysical techniques are used as nondestructive as well as fast methods in archaeology to locate, and characterize the subsurface features by measuring its physical properties, such as resistivity and permittivity responses as a function of time and space domains.…”

Section: Introductionmentioning

confidence: 99%

Integration of 2D/3D ground penetrating radar and electrical resistivity tomography surveys as enhanced imaging of archaeological ruins: A case study in San El‐Hager (Tanis) site, northeastern Nile Delta, Egypt

Gaber

Gemail

Kamel

et al. 2021

Archaeological Prospection

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In archaeo-geophysical investigations, the accuracy and resolution of the generated geophysical models are crucial parameters for excavation decision. Therefore, the combined use of different geophysical data sets is necessary to improve the interpretability of archaeological ruins, particularly in case of low physical contrast objects.The present study's objective is to validate the outputs of integrated ground penetrating radar (GPR) and electrical resistivity tomography (ERT) surveys in Tanis, which is considered one of the most important archaeological sites in the Nile Delta, Egypt.The GPR survey was carried out along an area of 24 × 31.5 m with profile interval of 0.5 m in two orthogonal directions using 100, 200 and 600 MHz shielded antenna.Moreover, nine ERT profiles were performed along the same GPR lines for comparison and integration using Wenner-beta (WB) and dipole-dipole (DD) arrays with 1 m

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“…Non-invasive testing conducted within the flooring area allows detecting crypts, tombs and hidden rooms, as well as evaluating the technical condition of the floors and ceilings. GPR was successfully used for the diagnostics and condition assessment of different historical objects [11][12][13][14][15][16][17]. Despite the advances in non-destructive testing technology, there is no one technique suitable for every situation.…”

Section: Introductionmentioning

confidence: 99%

Integrated Application of GPR and Ultrasonic Testing in the Diagnostics of a Historical Floor

2020

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The paper presents the results of integrated ground penetrating radar (GPR) and ultrasonic testing (UT) measurements conducted on a historical floor in St. Nicholas’ Church, Gdańsk, Poland. The described inspection was the first stage of the technical state assessment of the building. The aim of the study was the detection of underfloor air gaps, which were observed in a few trial pits. The condition of the ground under the floor was determined by localizing other inclusions such as rubble, human remains, brick walls and pipes. To identify the phenomenon of electromagnetic and ultrasonic wave propagation within the air gap, laboratory tests were conducted on physical models consisting of two concrete slabs stacked on top of each other and gradually moved apart to simulate a slot of varying thickness. The conducted research was supported by the numerical models of electromagnetic wave propagation. The obtained results showed that the integration of the GPR and UT methods provided an effective imaging of the floor and the area under it. Ultrasonic testing was proved to be a good technique for identifying air voids, while the GPR method allowed detecting concentrated anomalies and determining the degree of ground homogeneity under the floor.

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Indirect preservation of Egyptian historical sites using 3D GPR survey

Cited by 8 publications

References 5 publications

3D Reconstruction of embedded object using ground penetrating radar

3D Reconstruction of embedded object using ground penetrating radar

Integration of 2D/3D ground penetrating radar and electrical resistivity tomography surveys as enhanced imaging of archaeological ruins: A case study in San El‐Hager (Tanis) site, northeastern Nile Delta, Egypt

Integrated Application of GPR and Ultrasonic Testing in the Diagnostics of a Historical Floor

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