GPR Investigation at the Archaeological Site of Le Cesine, Lecce, Italy

Abstract

In this contribution, we present some results achieved in the archaeological site of Le Cesine, close to Lecce, in southern Italy. The investigations have been performed in a site close to the Adriatic Sea, only slightly explored up to now, and where the presence of an ancient Roman harbour is alleged on the basis of remains visible above all under the current sea level. This measurement campaign has been performed in the framework of a short-term scientific mission (STSM) performed in the framework of the European Cost Action 17131 (acronym SAGA), and has been aimed to identify possible points where future localized excavation might and hopefully will be performed in the next few years. Both a traditional elaboration and an innovative data processing based on a linear inverse scattering model have been performed on the data.

Integrated Geophysical And Geomatics Study At Xrobb L-Ghagin Archaeological Site: Preliminary Results

“…would enhance the vibration of this block and cave formation facilitating a potential collapse. Figure 3 reports the preliminary results of the ground-penetrating radar (GPR) investigation [4,5,6] in the area. The survey was conducted by using a UAV mounted GPR.…”

GPR Mapping of Cavities in Complex Scenarios with a Combined Time–Depth Conversion

“…After a common pre-processing, the data were focused on using a traditional migration algorithm working in a time domain and a linear inverse scattering approach working in a frequency domain. It is worth pointing out that the linear inverse scattering approach can be applied efficiently also in the case of electrically large-scale investigated domains, thanks to a technique called shifting zoom [31], which can dramatically reduce the computational burden without any meaningful loss of information.…”

A posteriori insertion of information for focusing and time–depth conversion of ground‐penetrating radar data

“…A typical example is the soil representation, being the soil usually modelled as a homogeneous medium with a flat air–soil interface, even if this is not always true. In this frame, it is worth remarking that, if the soil is homogeneous and the air–soil interface is flat, the exact value of propagation velocity of the medium is also the value that guarantees the correct time–depth conversion and that provides the best focusing of buried anomalies when inserted in a migration (Schneider, 1978; Stolt, 1978; Webster et al., 2019) or an inverse scattering (Catapano et al., 2019; Colica et al., 2021; Webster et al., 2019) algorithm. Conversely, outside this canonical situation, the focusing step can get more complicated if the user does not have the possibility to model properly the reference scenario at hand.…”