GNGTS 2024 - Atti del 42° Convegno Nazionale

Session 3.2 GNGTS 2024 layer (cluster no. 2) looks uniformed toned, improving the reconstructon compared to that achieved by individual inversion. Figure 1. Synthetc example: (a) true model, (b) individual inversion, (c) cross-gradient joint inversion, (d) normalized cross-gradient, (e) fuzzy c-means clustering. Field case study The feld case study is the Penne concrete dam located in central Italy (around 130 km east of Rome) and built in the second half of the sixtes as a reservoir for irrigaton (Fig. 2a). The hydro- geological layout of the site consists of Pliocene marly fysch having low permeability (hydraulic conductvity K < 10 −6 m/s), covered by Holocene ancient and recent alluvial deposits of the Tavo River. The alluvium is subdivided into a fne-grained shallower unit (clay and sandy silt) and a