GNGTS 2021 - Atti del 39° Convegno Nazionale

GNGTS 2021 S essione 1.3 138 from purely isotropic tomographies. P-wave fast azimuths orient mostly parallel to the trend of the Balcanic and the Alpine orogens in Eastern and Central Europe, respectively. In the Central Mediterranean the P-wave fast azimuths are sub-parallel to the Oligocene/Miocene-to-present retreating direction of the Ionian trench which led to the opening of the Liguro-Provençal and Thyrrenian basins and rotation of the Corsica-Sardinia block (Fig. 1). In synthesis, the pattern of the P-wave fast azimuths is largely consistent with the S-wave fast azimuths determined from the splitting of SKS waves and from Rayleigh waves. Together, these observations provide further constraints on the interpretation of the regional geodynamic evolution and on the accuracy of our anisotropic inverse method. References VanderBeek B. P. and Faccenda M.; (2021): Imaging upper mantle anisotropy with teleseismic P-wave de- lays: insights from tomographic reconstructions of subduction simulations. Geophysical Journal Inter- national, 225(3), 2097-2119. Corresponding author: francesco.rappisi@phd.unipd.it