GNGTS 2016 - Atti del 35° Convegno Nazionale

26 GNGTS 2016 S essione A matrice Conclusion. In the context of an extensional deformation regime described both by geophysical stress indicators (Montone and Mariucci, 2016) and GNSS geodesy (Caporali et al. , 2016), we report coseismic displacements of up to 2.5 cm horizontal and 4.5 cm vertical, from a rigorous analysis of daily solutions of a 600+ permanent GNSS sites, of which 22 are within 100 km from the epicenter of the two Mw>5.5 August 24, 2016 events. The data are perfectly consistent with the normal faulting regime, and appear more in keeping with the Tab. 2 – Hypocenter location of the two events of August 24, 2016, and estimated plane orientation (SE strike assumed), and moment magnitude, according to three different seismic networks. The last two columns give the rms of the fit of the observed displacements in plane and vertical for the three estimates. The last solution by INGV is the one best fitting the geodetic data. Network E Long N Lat Depth strike dip rake Mw Rms horiz Rms vert. (deg) (deg) (km) (mm) (mm) Glob. 13.20 42.66 12 142 45 -106 6.2 CMT 6 6 Glob. 13.15 42.68 12 127 45 -112 5.6 CMT GFZ 13.20 42.74 10 157 43 -76 6.2 4 7 GFZ 13.12 42.84 10 143 44 -82 5.5 INGV 13.23 42.70 8 156 50 -85 6.0 TDMT 4 5 INGV 13.15 42.79 5 135 47 -98 5.4 TDMT Fig. 3 – comparison of model and measured displacements (left) and displacement map of the best fitting solution (red arrows/vertical lines) compared with the observed displacements (blue arrows/lines).