Non-Stationary Modelling and Simulation of Near-Source Earthquake Ground Motion: ARMA and neural network methods

P. S. Skjærbæk, Poul Henning Kirkegaard, G. N. Fouskitakis, S. D. Fassois

    Publikation: Bidrag til bog/antologi/rapport/konference proceedingKonferenceartikel i proceedingForskningpeer review

    2 Citationer (Scopus)

    Abstract

    This paper is concerned with modelling and simulation of near-source earthquake ground motion. Recent studies have revealed that these motions show heavy non-stationary behaviour with very low frequencies dominating parts of the earthquake sequence. Modeling and simulation of this behaviour is of crucial importance in the design of flexible structures and other applications. This paper examines three approaches for the modelling and simulation of non-stationary nearsource ground accelerograms: The first one makes use of
    ARMA models combined with frequency and variance "stabilization". The second is based upon inherently nonstationary Time-dependent ARMA (TARMA) models, the parameters and variance of which are allowed to be explicit functions of time. The third approach is based on Neural Networks. The three approaches are used for the modelling and simulation of an accelerogram characterized by an epicentral distance of 16 km and measured during the 1979 Imperial Valley earthquake in California (U .S .A.). The results of the study indicate that while all three approaches can successfully predict near-source ground motions, the Neural Network based
    one gives somewhat poorer simulation results.
    OriginalsprogEngelsk
    TitelProceedings of the 15th International Modal Analysis Conference : February 3-6, 1997, Orlando, Florida
    Antal sider7
    Vol/bind2
    UdgivelsesstedBethel, Connecticut
    ForlagSociety for Experimental Mechanics
    Publikationsdato1997
    Sider1904-1910
    ISBN (Trykt)0-912053-53-4
    StatusUdgivet - 1997
    BegivenhedThe International Modal Analysis Conference - Orlando, Florida, USA
    Varighed: 3 feb. 19976 feb. 1997
    Konferencens nummer: 15

    Konference

    KonferenceThe International Modal Analysis Conference
    Nummer15
    Land/OmrådeUSA
    ByOrlando, Florida
    Periode03/02/199706/02/1997
    NavnIMAC
    Vol/bind2
    ISSN1046-6770

    Bibliografisk note

    Accepted for presentation at the 15th Int. Conference on Modal Analysis, Orlando, Florida, February 3-6, 1997

    PDF for print: 16

    Emneord

    • Earthquakes
    • New-Source Areas
    • Non-Stationary Signals
    • Stochastic Signals
    • ARMA
    • Tarma

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