GNGTS 2016 - Atti del 35° Convegno Nazionale

GNGTS 2016 S essione 2.1 319 and GMPEs as inputs. A comparison is possible in terms of areal distribution of the PGAvalues. The expected ground motion computed with this seismogenic zonation is much more articulated than that of MPS04 because of the more detailed zonation with narrower SZs, which sometimes concentrate the shaking. Conversely to MPS04 (Fig. 3a), where the largest hazard refers to the central-southern Apennines, the new maps show the largest hazard in the northern Apennines and in Friuli. An additional comparison has been established with the European seismic hazard map developed within the framework of the SHARE project (Giardini et al., 2013), where an articulated logic tree was considered for several parameters, among which zonation and GMPE (see Slejko et al., 2014). Differences between the two maps (compare Figs. 3b and 3d) can be observed in several sectors of the study region (e.g. the Friuli area in the north-eastern Italy). 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