GNGTS 2023 - Atti del 41° Convegno Nazionale

Session 1.1 - POSTER GNGTS 2023 Figure 1 – a) The seismological-tectonics map; b) Dataset location map. To constrain the seismo-stratigraphic interpretation phase, the wells were projected above the nearest seismic reflection profiles, combining data from deep tectonic structures and the earthquakes’ location. A time-to-depth conversion (3D depth conversion tool, using Move software) process was carried out to transform the seismic profiles from Two-Way-Time (TWT, seconds) to depth (m) based on an accurately compiled database (lithology, porosity, Young modulus, Poisson Ratio) with constant velocity values for each horizon. Therefore, a dense grid of 30 km spacing was built (according to the initial surface construction), and the points were resampled in such a way as to obtain a good interpolation of the data and return a smooth surface. Finally, a preliminary 3D lithospheric model of the Sicily Channel is obtained, able to discriminate the Moho discontinuity depths (as in previous studies) and to differentiate between the upper, middle, and lower crust (Fig. 2). The realization of a 3D lithospheric model is essential for understanding the dynamics of crustal deformations and earthquakes in active orogenic systems ( Lu et al., 2019 ).