GNGTS 2024 - Atti del 42° Convegno Nazionale

Session 1.1 GNGTS 2024 the eastern Calabrian coast, seems to be today fnally characterised by a compressive and strike-slip regime with the orientaton of the maximum compression in a directon approximately NW-SE. In this area, the new data further highlights the clear separaton between the western Tyrrhenian and eastern Ionian margins. Strike-slip faultng, the less prevalent tectonic regime in Italy, is spatally confned to areas along the southern Apennine foredeep and in eastern Sicily, both onshore and ofshore in the Tyrrhenian and Ionian regions. Situated within the broader context of Mediterranean tectonic plate boundary, the Adriatc area holds geological importance as a dynamic region, with the Adriatc microplate assuming a central role. Notably, recent revisions have been made to data from deep wells in the southern sector of the Adriatc Sea, characterised by a lack of seismic actvity. The results of the analysis carried out along these wells have not shown borehole ovalizaton, thus indicatng the absence of an anisotropic stress feld. References ISIDe Working Group; 2007: Italian seismological instrumental and parametric database (ISIDe). Rome, Italy: Isttuto Nazionale di Geofsica e Vulcanologia. doi:10.13127/ISIDE. Mariucci M.T., Montone P.; 2022: IPSI 1.5, database of Italian present-day stress indicators. Rome, Italy: Isttuto Nazionale di Geofsica e Vulcanologia. doi:10.13127/IPSI.1.5. Montone P., Mariucci M.T.; 2023: Deep well new data in the area of the 2022 Mw 5.5 earthquake, Adriatc Sea, Italy: In situ stress state and P-velocites. Front. Earth Sci. 11:1164929. doi: 10.3389/feart.2023.1164929. Montone P., Mariucci, M.T.; 2016: The new release of the Italian contemporary stress map. Geophys. J. Int. 205, 1525–1531. doi:10.1093/gji/ggw100. Scognamiglio L., Tint E., Quintliani M.; 2006: Time domain moment tensor (TDMT). Rome, Italy: Isttuto Nazionale di Geofsica e Vulcanologia. doi:10.13127/TDMT. Corresponding author: paola.montone@ingv.it