Figure 7. (top) Maps of maximum peak velocities in the Tiber River valley for the M 5.3 Alban Hills scenario, superimposed with the 50-m-depth contours for the isosurface of V_s = 250 m/sec. The peak velocities are scaled by the same constant for all components. The triangles indicate the location of Prati (Pra), Colosseum (Col), and Vatican City (Vat). The dashed line depicts the profile used to display synthetic seismograms (bottom).