GNGTS 2024 - Atti del 42° Convegno Nazionale

Session 2.3 GNGTS 2024 BACKGROUND FRAMEWORK In Italy according to OPCM 3274 of 2003, 4 seismic zones were established. Highest hazard areas are spread along the Apennine, in the south and eastern part of the country. The Lombardy region is among the areas where seismic hazard is relatvely low. Most of its land belongs to Seismic Zones 3 and 4 (Fig. 1). Fig. 1: Real and perceived seismic hazard. The diagram presents the frequency distributon of diferences in hazard percepton for Italian seismic zonaton (Crescimbene et al., 2015); the map displays the seismic classifcaton of the Lombardy region where no more than 40% of the populaton perceives seismic hazard properly.