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Updating Spatially Variable Seismic Ground Motion Models

Zerva, A. and Beck, J. L. (2001) Updating Spatially Variable Seismic Ground Motion Models. In: Structural safety and reliability : ICOSSAR '01. Balkema , Lisse, The Netherlands. ISBN 905809197X.

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A methodology for the updating of stochastic models for the description of seismic ground motions recorded over extended areas is presented. The approach (i) embeds seismic ground motion parameter estimation in a probabilistic framework, and (ii) identifies temporal and spatial seismic ground motion characteristics simultaneously from either smoothed or unsmoothed nonparametric spectral estimates. It is shown that higher values for the coherency are identified when no smoothing is applied to the empirical data. The approach and its findings have a significant impact on the evaluation of parametric spatially variable ground motion models for the seismic response evaluation of lifelines.

Item Type:Book Section
Additional Information:AZ acknowledges the support of the USA National Science Foundation (NSF) under grants CMS-9725567 and CMS-9870509.
Funding AgencyGrant Number
Subject Keywords:Bayesian updating, seismic ground motion models, coherency
Record Number:CaltechAUTHORS:20120924-143406054
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:34323
Deposited By: Carmen Nemer-Sirois
Deposited On:01 Dec 2012 00:12
Last Modified:03 Oct 2019 04:17

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