GNGTS 2024 - Atti del 42° Convegno Nazionale

Session 1.1 GNGTS 2024 Integrated analysis of geophysical data: a case study from Central Italy M.M. Tibert 1 , F.E. Maesano 1 , M. Butnelli 1 , P. De Gori 1 , F. Ferri 2 , L. Minelli 1 , M. Di Nezza 1 , C. D'Ambrogi 2 1 Isttuto Nazionale di Geofsica e Vulcanologia, Rome, Italy 2 Isttuto Superiore per la Protezione e la Ricerca Ambientale, Servizio Geologico d’Italia, Rome, Italy We performed a 2D gravity modeling across the Central Apennines, spanning from the Tyrrhenian coast to the Adriatc Sea, in the area afected by the Amatrice-Visso-Norcia earthquakes. The cross-secton was built exploitng the results of the 3D model proposed by the RETRACE 3D project ( www.retrace3d.it ) and aimed at completng and verifying the crustal geometries resultng from the project itself. The results were checked against the velocity model provided by local tomography (LET), adding further details, and, fnally, against seismicity recorded during the 2016-2017 sequence. The results indicate that the geometries proposed in the RETRACE 3D model ft well with the Bouguer anomalies, except for some local misfts. We were also able to determine some new elements in the surroundings of the RETRACE study area, where the cross-secton length exceeds the 3D model. In additon, the gravity model allowed us to investgate the nature of the basement top and its relatonship with seismotectonics. Corresponding author: mara.tbert @ingv.it