Scenario Dependence of Linear Site‐Effect Factors for Short‐Period Response Spectral Ordinates
| Autor: | Benjamin Edwards, Peter J. Stafford, Julian J. Bommer, Adrian Rodriguez-Marek, Pauline P. Kruiver |
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| Rok vydání: | 2017 |
| Předmět: |
Geochemistry & Geophysics
EASTERN NORTH-AMERICA AMPLIFICATION RATIOS Period (periodic table) MODELS CALIFORNIA 0211 other engineering and technologies 0404 Geophysics 02 engineering and technology 010502 geochemistry & geophysics 01 natural sciences FOURIER 0905 Civil Engineering symbols.namesake Geochemistry and Petrology 0105 earth and related environmental sciences 021110 strategic defence & security studies Science & Technology WAVE VELOCITY PROFILE EARTHQUAKES Geodesy MOTION PREDICTION EQUATIONS Geophysics Fourier transform Physical Sciences symbols KAPPA(0) SEISMIC-HAZARD ANALYSIS Geology |
| Zdroj: | BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA |
| ISSN: | 1943-3573 0037-1106 |
| DOI: | 10.1785/0120170084 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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