GNGTS 2022 - Atti del 40° Convegno Nazionale

518 GNGTS 2022 Sessione 3.3 where d x R , z R are the data acquired on the ground surface in the positions x R , z R and G x R , z R (Δ χ x P , z P ) is the theoretical gradient obtained in the positions x R , z R by considering the map of susceptibility Δ χ x P , z P for the investigated section. The normalized probability values, associated with each magnetic susceptibility 2D map, are sorted in descending order from most likely to less likely. In a second step, the algorithm selects the most likely maps to be furtherly discretized. In particular, the algorithm identifies Fig. 1 - a) Google Earth geographical map of the San Pietro Infine archaeological site; b) geophysical surveys area. The yellow lines limit the four meshes where MAG, FDEM, and GPR measurements were performed. The blue square indicates the location of the ancient apse defined as Il Torrione .