Scenario dependence of linear site effect factors for short-period response spectral ordinates

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Title: Scenario dependence of linear site effect factors for short-period response spectral ordinates
Authors: Stafford, PJ
Rodriguez-Marek, A
Edwards, B
Kruiver, PP
Bommer, JJ
Item Type: Journal Article
Abstract: Ground‐motion models for response spectral ordinates commonly partition site‐response effects into linear and nonlinear components. The nonlinear components depend upon the earthquake scenario being considered implicitly through the use of the expected level of excitation at some reference horizon. The linear components are always assumed to be independent of the earthquake scenario. This article presents empirical and numerical evidence as well as a theoretical explanation for why the linear component of site response depends upon the magnitude and distance of the earthquake scenario. Although the impact is most pronounced for small‐magnitude scenarios, the finding has significant implications for a number of applications of more general interest including the development of site‐response terms within ground‐motion models, the estimation of ground‐motion variability components ϕS2SϕS2S and ϕSSϕSS , the construction of partially nonergodic models for site‐specific hazard assessments, and the validity of the convolution approach for computing surface hazard curves from those at a reference horizon, among others. All of these implications are discussed in the present article.
Issue Date: 17-Oct-2017
Date of Acceptance: 9-Aug-2017
URI: http://hdl.handle.net/10044/1/50385
DOI: https://dx.doi.org/10.1785/0120170084
ISSN: 0037-1106
Publisher: Seismological Society of America
Start Page: 2859
End Page: 2872
Journal / Book Title: Bulletin of the Seismological Society of America
Volume: 107
Issue: 6
Copyright Statement: Peter J. Stafford, Adrian Rodriguez‐Marek, Benjamin Edwards, Pauline P. Kruiver, Julian J. Bommer; Scenario Dependence of Linear Site‐Effect Factors for Short‐Period Response Spectral Ordinates. Bulletin of the Seismological Society of America ; 107 (6): 2859–2872. doi: https://doi.org/10.1785/0120170084. Copyright © 2017 GeoScienceWorld
Keywords: Science & Technology
Physical Sciences
Geochemistry & Geophysics
MOTION PREDICTION EQUATIONS
SEISMIC-HAZARD ANALYSIS
WAVE VELOCITY PROFILE
EASTERN NORTH-AMERICA
AMPLIFICATION RATIOS
MODELS
FOURIER
EARTHQUAKES
CALIFORNIA
KAPPA(0)
0404 Geophysics
0905 Civil Engineering
Geochemistry & Geophysics
Publication Status: Published
Appears in Collections:Faculty of Engineering
Civil and Environmental Engineering
Geotechnics



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