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Representing and simulating strong ground motion

DEPARTMENT OF GEOPHYSICS AND ASTRONOMY UNIVERSITY OF BRITISH COLUMBIA, VANCOUVER, BRITISH COLUMBIA, Canada

Abstract

This paper presents a procedure for representing and synthesizing strongmotion accelerograms to be used in computing structural response in earthquake prone areas. This procedure models the target earthquake as a nonstationary second-order autoregressive (AR) process. The AR parameters are determined either by segmenting the record or by continuously updating the parameters in a time adaptive manner. The outlined procedure is applied to the simulation of accelerograms using the Orion Boulevard recording of the 1971 San Fernando earthquake as a target.

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