Combining observed linear basin amplification factors with 1D nonlinear site-response analyses to predict site response for strong ground motions: application to Wellington, New Zealand

Christopher de la Torre, Brendon A. Bradley, Felipe Kuncar, Robin L. Lee, Liam M. Wotherspoon & Anna E. Kaiser
This study develops a method for estimating site amplification that combines instrumentally observed site-specific amplification factors with modification factors from nonlinear site-response analyses. This approach provides estimates of site response for large-strain motions based on observations and sophisticated nonlinear modelling. A database of weak- to moderate-intensity ground motions recorded in three basins of Wellington, New Zealand, is used to study the observed site amplification. A subset of nine strong-motion stations was selected to perform nonlinear...
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