Scenario dependence of linear site-effect factors for short-period response spectral ordinates
File(s)
Accepted version
Author(s)
Stafford, PJ
Rodriguez-Marek, A
Edwards, B
Kruiver, PP
Bommer, JJ
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.
Date Issued
2017-10-17
Date Acceptance
2017-08-09
Citation
Bulletin of the Seismological Society of America, 2017, 107 (6), pp.2859-2872
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
Identifier
https://pubs.geoscienceworld.org/ssa/bssa/article-abstract/107/6/2859/519567/Scenario-Dependence-of-Linear-Site-Effect-Factors
Subjects
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)
Geochemistry & Geophysics
0404 Geophysics
0905 Civil Engineering
Publication Status
Published
Date Publish Online
2017-10-17