• Identification of resonant earthquake ground motion

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/sadh/035/03/0355-0371

    • Keywords

       

      Disorder; dispersion index; entropy rate; frequency content; resonant ground motion, uncertainty.

    • Abstract

       

      Resonant ground motion has been observed in earthquake records measured at several parts of the world. This class of ground motion is characterized by its energy being contained in a narrow frequency band. This paper develops measures to quantify the frequency content of the ground motion using the entropy principle and the dispersion index. These measures are based on the geometric properties of the power spectral density function of the ground acceleration. The application of these measures to quantify the frequency content of random earthquake models is demonstrated first. Subsequently, these measures are used to quantify the frequency content of the ground acceleration for near-field records measured at rock and soil sites, short-duration and long-duration earthquakes.

    • Author Affiliations

       

      Abbas Moustafa1

      1. Department of Civil Engineering, Minia University, Minia 61111, Egypt
    • Dates

       

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