Parametric spectral inversion for North-eastern Italy

Strong motion prediction holds great interest for engineering seismology, as it is strictly related to vulnerability and risk assessment. In the case of areas of low or moderate seismicity with little strong motion records, such as North-eastern Italy, models obtained for other regions can be calibrated for application to the area of interest with the help of precise information on site-specific amplification and regional attenuation. The aim of this study is to provide high-quality estimates for seismological parameters for a trans-frontier study area in NE Italy by using parametric spectral inversion. The Fourier amplitude spectral model is built based on region-specific literature with the addition of uncertainty estimators. Frequency dependent site response functions are extracted using residual analysis. Results are in good agreement with available literature and provide a complementary empirical description of site response that can be directly applied into site-specific hazard assessment.