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Scenario-dependence of linear site amplification factors - Adrian Rodriguez-Marek

by Adrian Rodriguez-Marek

Virginia Tech

November 30th, 2017 15:00 – 17:00
Sala del Camino - Palazzo del Broletto
Piazza della Vittoria 15 – Pavia

Models used for the estimation of site response and for capturing site effects in ground motion prediction equations assume that linear amplification factors are independent of the earthquake scenario in consideration.
We present empirical and numerical evidence that for soft sites and low magnitudes, site amplification functions in the response spectral domain have a strong magnitude- and distance-dependence. We present evidence from the KiK-net array to show that the scenario dependence is also observed in site terms of a ground motion prediction equation. Finally, we review the implications of these observations for seismic hazard analysis studies and for the development of ground motion prediction equations.