GNGTS 2014 - Atti del 33° Convegno Nazionale

GNGTS 2014 S essione 2.1 Fig. 2 – Gain level versus sigma. The gain level is simply defined as the ratio of the PGA hazard corresponding to a given value of sigma to a reference hazard level [σ log(PGA) = 0.2 ≈ σ log(PGA) of the GMPE of Sabetta and Pugliese (1996)]. Fig. 3 – Comparison between the PGA (a) and 1 s spectral acceleration (b) hazard values as resulting from the application of the original and component-adjusted ITA10 model.