Site-specific probabilistic seismic hazard analysis for the western area of Naples, Italy

摘要: Probabilistic seismic hazard analysis (PSHA) encompasses quantitative estimation of at a site by considering all plausible earthquake scenarios. The outcome PSHA is often reported as the mean rate exceeding specific ground motion intensity measure given site. This study attempts to perform for western area city Naples (southern Italy) employing most advanced methods and new databases; namely, DISS3.2 (Database Individual Seismogenic Sources) CPTI15 (Parametric Catalogue Italian Earthquakes). models include individual seismogenic structures/faults liable generating major earthquakes with magnitude greater than 5.5, background areal source model evaluate effect less 5.5. built up based on long-term recurrence tectonic faults spatial distribution historical earthquakes. Site amplification considered microzonation maps derived Naples. delineate expected levels reliable geological geotechnical subsoil models. Hazard are number return periods ground-shaking in terms peak acceleration 5%-damped pseudo-spectral range that representative existing construction within area. Detailed comparisons results national code-based design spectra emphasize importance performing site-specific explicit consideration effects.