GNGTS 2019 - Atti del 38° Convegno Nazionale

GNGTS 2019 S essione 2.2 473 Fig. 2 - a) H/Vcurves at different sites along the NS1 profile fromnorth (top) to south (bottom). The dashed line connects the fundamental H/V resonance peaks (coarse dashed line for 1D resonance, fine dashed line for 2D resonance). b) Individual spectral components of motion. Blue and green dots indicate the longitudinal and transversal 2D resonance peaks respectively. c) Peak amplitudes of the spectral ratios as a function of distance from north evaluated at about 0.35 Hz for H/V, 0.3 Hz for the EW/V (longitudinal) and 0.4 Hz for the NS/V (transversal).