Comparison between GPR and four electromagnetic methods for stone features characterization: An example

Abstract

Multimethod prospection at shallow depth emphasizes capabilities of detection through the different sensitivity of each method. A comparison between four ‘integrative’ methods (electrical/ electromagnetic) and one ‘quasi‐punctual’ method (GPR) is performed to analyse individual efficiency with various physical or geometrical parameters. The chosen site is located at ‘Le Gué Goujard’ (Nièvre), known to exhibit shallow archeological features at depths rather equivalent to limestone geological settings. The different methods involved allow to distinction between them.

Discovery of the Romanesque church of the Abbey of our lady of Bec (Le Bec‐Hellouin, Normandy, France) by means of geophysical methods

“…Moreover, the very shallow depth of the remnants confirmed by archaeological excavation trenches facilitates the geophysical detection. This case study illustrates the powerful capabilities of GPR for detecting and precisely mapping burried stones and remnants (Camerlynck, Dabas, & Panissod, ) compared to more integrative ERI and MM techniques. However, the method does not provide any result in conductive soils.…”

“…Moreover, the very shallow depth of the remnants confirmed by archaeological excavation trenches facilitates the geophysical detection. This case study illustrates the powerful capabilities of GPR for detecting and precisely mapping burried stones and remnants (Camerlynck, Dabas, & Panissod, 1994) In the counter part, the wall between the Saint Nicolas' tower and the transept was not detected with GPR and the S4 excavation trench results suggest that this basement is too close to the surface to be detected by GPR, as it is located in the ground coupling depth.…”

Discovery of the Romanesque church of the Abbey of our lady of Bec (Le Bec‐Hellouin, Normandy, France) by means of geophysical methods

“…Moreover, the very shallow depth of the remnants confirmed by archaeological excavation trenches facilitates the geophysical detection. This case study illustrates the powerful capabilities of GPR for detecting and precisely mapping burried stones and remnants (Camerlynck, Dabas, & Panissod, ) compared to more integrative ERI and MM techniques. However, the method does not provide any result in conductive soils.…”

“…Moreover, the very shallow depth of the remnants confirmed by archaeological excavation trenches facilitates the geophysical detection. This case study illustrates the powerful capabilities of GPR for detecting and precisely mapping burried stones and remnants (Camerlynck, Dabas, & Panissod, 1994) In the counter part, the wall between the Saint Nicolas' tower and the transept was not detected with GPR and the S4 excavation trench results suggest that this basement is too close to the surface to be detected by GPR, as it is located in the ground coupling depth.…”

Discovery of the Romanesque church of the Abbey of our lady of Bec (Le Bec‐Hellouin, Normandy, France) by means of geophysical methods

“…Moreover, the very shallow depth of the remnants confirmed by archaeological excavation trenches facilitates the geophysical detection. This case study illustrates the powerful capabilities of GPR for detecting and precisely mapping burried stones and remnants (Camerlynck, Dabas, & Panissod, ) compared to more integrative ERI and MM techniques. However, the method does not provide any result in conductive soils.…”

“…Moreover, the very shallow depth of the remnants confirmed by archaeological excavation trenches facilitates the geophysical detection. This case study illustrates the powerful capabilities of GPR for detecting and precisely mapping burried stones and remnants (Camerlynck, Dabas, & Panissod, 1994) In the counter part, the wall between the Saint Nicolas' tower and the transept was not detected with GPR and the S4 excavation trench results suggest that this basement is too close to the surface to be detected by GPR, as it is located in the ground coupling depth.…”

Discovery of the Romanesque church of the Abbey of our lady of Bec (Le Bec‐Hellouin, Normandy, France) by means of geophysical methods

“…Moreover, the very shallow depth of the remnants confirmed by archaeological excavation trenches facilitates the geophysical detection. This case study illustrates the powerful capabilities of GPR for detecting and precisely mapping burried stones and remnants (Camerlynck, Dabas, & Panissod, ) compared to more integrative ERI and MM techniques. However, the method does not provide any result in conductive soils.…”

“…Moreover, the very shallow depth of the remnants confirmed by archaeological excavation trenches facilitates the geophysical detection. This case study illustrates the powerful capabilities of GPR for detecting and precisely mapping burried stones and remnants (Camerlynck, Dabas, & Panissod, 1994) In the counter part, the wall between the Saint Nicolas' tower and the transept was not detected with GPR and the S4 excavation trench results suggest that this basement is too close to the surface to be detected by GPR, as it is located in the ground coupling depth.…”