GNGTS 2013 - Atti del 32° Convegno Nazionale

Microzoning strategy in near field areas: some evidences and open problems M.L. Rainone, P. Signanini, G. Vessia Department of Engineering and Geology (INGEO), University “G. d’Annunzio” of Chieti-Pescara, Chieti Scalo, Italia Introduction. The recent “strong motion” earthquake sequences recorded along the Italian territory since 2009, showed common characters: 1) surficial hypocenter (lower then 12 km depth); 2) relevant shaking suffered within a radius of 30 km from the epicenter and 3) differentiated damages on structures mainly due to local seismic amplification of surficial Fig. 1 – a) Intensity map of 2009 L’Aquila earthquake on April 6 th at 3:32 local time; b) seismic hazard map for microzoning studies issued by OPCM N. 3519 (2006); c) intensity map of the 2012 Emilia Romagna earthquakes after all shocks up to June 3 rd (after Quest Working Group, 2012). 325 GNGTS 2013 S essione 2.2