Figure 1. The seismicity near Rome estimated from earthquakes of the Italian catalog, Catalogo Parametrico dei Terremoti Italiani (Gruppo di Lavoro, CPTI, 1999). Dotted rectangles present the two main seismogenic districts affecting the city (the Central Apennines and the Alban Hills). We simulate ground motions produced in the city by two scenario earthquake locations: (1) the Alban Hills, at an average distance of 25 km from Rome and (2) the Central Apennines located 80–100 km from Rome. The filled star shows the epicenter location of the M 5.3 Alban Hills scenario earthquake. Solid rectangles depict the Rome model and the fault projection that is used for the Central Apennines scenario earthquake, taken from the database of Valensise and Pantosti, (2001) for the 13 January 1915 Fucino earthquake, M 7.0. The horizontal line depicts the profile used to display synthetic seismograms for the Fucino earthquake scenario in Figure 9.