A stochastic ground motion model with separable temporal and spectral nonstationarities

  • Rezaeian S
  • Der Kiureghian A
  • 49


    Mendeley users who have this article in their library.
  • 108


    Citations of this article.


A fully nonstationary stochastic model for strong earthquake ground motion is developed. The model employs filtering of a discretized white-noise process. Nonstationarity is achieved by modulating the intensity and varying the filter properties in time. The formulation has the important advantage of separating the temporal and spectral nonstationary characteristics of the process, thereby allowing flexibility and ease in modeling and parameter estimation. The model is fitted to target ground motions by matching a set of statistical characteristics, including the mean-square intensity, the cumulative mean number of zero-level up-crossings and a measure of the bandwidth, all expressed as functions of time. Post-processing by a second filter assures zero residual velocity and displacement, and improves the match to response spectral ordinates for long periods. Copyright q 2008 John Wiley & Sons, Ltd.

Author-supplied keywords

  • Accelerograms
  • Earthquake ground motion
  • Nonstationary process
  • Response spectra
  • Simulation
  • Stochastic models

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document


  • Sanaz Rezaeian

  • Armen Der Kiureghian

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free