Journal Article10.1785/GSSRL.68.1.128
Equations for Estimating Horizontal Response Spectra and Peak Acceleration from Western North American Earthquakes: A Summary of Recent Work
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TL;DR: In this article, the authors provide tables for estimating random horizontal component peak acceleration and 5 percent damped pseudo-acceleration response spectra in terms of the natural, rather than common, logarithm of the ground-motion parameter.
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Abstract: In this paper we summarize our recently-published work on estimating horizontal response spectra and peak acceleration for shallow earthquakes in western North America. Although none of the sets of coefficients given here for the equations are new, for the convenience of the reader and in keeping with the style of this special issue, we provide tables for estimating random horizontal-component peak acceleration and 5 percent damped pseudo-acceleration response spectra in terms of the natural, rather than common, logarithm of the ground-motion parameter. The equations give ground motion in terms of moment magnitude, distance, and site conditions for strike-slip, reverse-slip, or unspecified faulting mechanisms. Site conditions are represented by the shear velocity averaged over the upper 30 m, and recommended values of average shear velocity are given for typical rock and soil sites and for site categories used in the National Earthquake Hazards Reduction Program's recommended seismic code provisions. In addition, we stipulate more restrictive ranges of magnitude and distance for the use of our equations than in our previous publications. Finally, we provide tables of input parameters that include a few corrections to site classifications and earthquake magnitude (the corrections made a small enough difference in the ground-motion predictions that we chose not to change the coefficients of the prediction equations).
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Citations
Using metaheuristic algorithms to optimize a mixed model-based ground-motion prediction model and associated variance components
Mohsen Akhani,Shahram Pezeshk +1 more
TL;DR: This study employed two metaheuristic optimization algorithms to estimate a mixed model-based ground-motion model (GMM) with several variance components, and shows that using the proposed algorithms provides better results compared to the existing search algorithms.
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Response spectrum modelling for regions lacking earthquake records
A.M. Chandler,Nelson Lam,John Wilson,Graham Hutchinson +3 more
- 01 Jan 2001
TL;DR: In this article, a critical evaluation of the various deterministic and probabilistic approaches to response spectrum modelling, including an introduction to the component attenuation model (CAM), is provided.
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Shallow elasticity structure from colocated pressure and seismic stations in the Piñon Flat Observatory and estimation of Vs30
Toshiro Tanimoto,Jiong Wang +1 more
TL;DR: Tanimoto et al. as discussed by the authors developed an algorithm for deriving shallow elasticity structure from colocated pressure and seismic instruments, which is applied to data at nine stations in the Pinon Flat Observatory (PFO) in Southern California.
Bayesian inference of earthquake rupture models using polynomial chaos expansion
TL;DR: A sensitivity analysis based on the PC surrogate model suggests that the hypocenter location plays a dominant role in peak ground velocity (PGV) responses, while elliptical patch properties only show secondary impact.
Development of a site-conditions map for the Campania-Lucania region (southern Apennines, Italy)
TL;DR: In this paper, a site classification map for the Campania-Lucania region (southern Apennines, Italy) is presented, where the geological units shown on a 1:250,000 scale geological map have been combined into four categories based on age and geological similarities.
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