Imperial College London
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ProfessorPeterStafford

Faculty of Engineering, Department of Civil and Environmental Engineering

Professor of Engineering Seismology
 
 
 
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Contact

 

+44 (0)20 7594 7916p.stafford

 
 
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Assistant

 

Ms Ruth Bello +44 (0)20 7594 6040

 
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Location

 

321Skempton BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Stafford:2021:10.1007/s10950-021-10053-w,
author = {Stafford, P},
doi = {10.1007/s10950-021-10053-w},
journal = {Journal of Seismology},
pages = {1--13},
title = {Constraints on near-source saturation models for avoiding over-saturation of response spectral ordinates in RVT-based stochastic ground-motion simulations},
url = {http://dx.doi.org/10.1007/s10950-021-10053-w},
volume = {26},
year = {2021}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Inversions of empirical data and ground-motionmodels to find Fourier spectral parameters can result in parameter combinations that produce over-saturation of shortperiod response spectral ordinates. While some evidence forover-saturation in empirical data exists, most ground-motionmodellers do not permit this scaling within their models.Host-to-target adjustmentsthat are made to published groundmotion models for use in site-specific seismic hazard analyses frequently require the identification of an equivalentset of Fourier spectral parameters. In this context, when inverting response spectral models that do not exhibit oversaturation effects, it is desirable impose constraints upon theFourier parameters to match the scaling of the host-regionmodel. The key parameters that determine whether oversaturation arises are the geometric spreading rate (γ) and theexponential rate within near-source saturation models (hβ ).The article presents the derivation of simple nonlinear constraints that can be imposed to prevent over-saturation whenundertaking Fourier spectral inversions.
AU  - Stafford,P
DO  - 10.1007/s10950-021-10053-w
EP  - 13
PY  - 2021///
SN  - 1383-4649
SP  - 1
TI  - Constraints on near-source saturation models for avoiding over-saturation of response spectral ordinates in RVT-based stochastic ground-motion simulations
T2  - Journal of Seismology
UR  - http://dx.doi.org/10.1007/s10950-021-10053-w
UR  - https://link.springer.com/article/10.1007/s10950-021-10053-w
UR  - http://hdl.handle.net/10044/1/92528
VL  - 26
ER  -
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