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Probabilistic generation of hazard‐consistent suites of fully non‐stationary seismic records.

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Title: Probabilistic generation of hazard‐consistent suites of fully non‐stationary seismic records.
Authors: Yanni, Hera1 (AUTHOR), Fragiadakis, Michalis1 (AUTHOR) mfrag@mail.ntua.gr, Mitseas, Ioannis P.1,2 (AUTHOR)
Source: Earthquake Engineering & Structural Dynamics. Aug2024, Vol. 53 Issue 10, p3140-3164. 25p.
Subjects: Ground motion, Accelerograms, Earthquake engineering, Hazard mitigation
Abstract: A novel, practical, and computationally efficient probabilistic methodology for the stochastic generation of suites of fully non‐stationary artificial accelerograms is presented. The proposed methodology ensures that the produced ground motion suites match a given target spectral mean and target variability for the whole period range of interest. This is achieved by first producing an ensemble of random target spectra with the given mean and variability and then using them to generate artificial, target spectrum‐compatible, acceleration time‐histories with spectral representation techniques. Spectral correlation can also be assumed for the generated ground motion spectra. Based on the same backbone, two different formulations are proposed for generating spectrum‐compatible acceleration time‐histories of the non‐stationary kind. The distinction between these two variants lies in the techniques employed for modeling the temporal and spectral modulation, focusing on the site‐compatibility of the produced records. The first approach uses past‐recorded seismic accelerograms as seed records, and the second proposes and uses a new, probabilistic time‐frequency modulating function. The outcome of the proposed methodology is suites containing site‐compatible ground motion time‐histories whose spectral mean and variability match those obtained from any of the usually employed target spectra used in the earthquake engineering practice. An online tool implementing the proposed methodology is also freely provided. [ABSTRACT FROM AUTHOR]
Copyright of Earthquake Engineering & Structural Dynamics is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 178396270
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Probabilistic generation of hazard‐consistent suites of fully non‐stationary seismic records.
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  Data: <searchLink fieldCode="AR" term="%22Yanni%2C+Hera%22">Yanni, Hera</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Fragiadakis%2C+Michalis%22">Fragiadakis, Michalis</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> mfrag@mail.ntua.gr</i><br /><searchLink fieldCode="AR" term="%22Mitseas%2C+Ioannis+P%2E%22">Mitseas, Ioannis P.</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Earthquake+Engineering+%26+Structural+Dynamics%22">Earthquake Engineering & Structural Dynamics</searchLink>. Aug2024, Vol. 53 Issue 10, p3140-3164. 25p.
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  Data: <searchLink fieldCode="DE" term="%22Ground+motion%22">Ground motion</searchLink><br /><searchLink fieldCode="DE" term="%22Accelerograms%22">Accelerograms</searchLink><br /><searchLink fieldCode="DE" term="%22Earthquake+engineering%22">Earthquake engineering</searchLink><br /><searchLink fieldCode="DE" term="%22Hazard+mitigation%22">Hazard mitigation</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: A novel, practical, and computationally efficient probabilistic methodology for the stochastic generation of suites of fully non‐stationary artificial accelerograms is presented. The proposed methodology ensures that the produced ground motion suites match a given target spectral mean and target variability for the whole period range of interest. This is achieved by first producing an ensemble of random target spectra with the given mean and variability and then using them to generate artificial, target spectrum‐compatible, acceleration time‐histories with spectral representation techniques. Spectral correlation can also be assumed for the generated ground motion spectra. Based on the same backbone, two different formulations are proposed for generating spectrum‐compatible acceleration time‐histories of the non‐stationary kind. The distinction between these two variants lies in the techniques employed for modeling the temporal and spectral modulation, focusing on the site‐compatibility of the produced records. The first approach uses past‐recorded seismic accelerograms as seed records, and the second proposes and uses a new, probabilistic time‐frequency modulating function. The outcome of the proposed methodology is suites containing site‐compatible ground motion time‐histories whose spectral mean and variability match those obtained from any of the usually employed target spectra used in the earthquake engineering practice. An online tool implementing the proposed methodology is also freely provided. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Earthquake Engineering & Structural Dynamics is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Type: doi
        Value: 10.1002/eqe.4153
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 25
        StartPage: 3140
    Subjects:
      – SubjectFull: Ground motion
        Type: general
      – SubjectFull: Accelerograms
        Type: general
      – SubjectFull: Earthquake engineering
        Type: general
      – SubjectFull: Hazard mitigation
        Type: general
    Titles:
      – TitleFull: Probabilistic generation of hazard‐consistent suites of fully non‐stationary seismic records.
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            NameFull: Yanni, Hera
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            NameFull: Fragiadakis, Michalis
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            NameFull: Mitseas, Ioannis P.
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            – D: 01
              M: 08
              Text: Aug2024
              Type: published
              Y: 2024
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              Value: 53
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            – TitleFull: Earthquake Engineering & Structural Dynamics
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