On low-frequency errors of uniformly modulated filtered white-noise models for ground motions

Earthquake Engineering and Structural Dynamics
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Abstract

Low-frequency errors of a commonly used non-stationary stochastic model (uniformly modulated filtered white-noise model) for earthquake ground motions are investigated. It is shown both analytically and by numerical simulation that uniformly modulated filter white-noise-type models systematically overestimate the spectral response for periods longer than the effective duration of the earthquake, because of the built-in low-frequency errors in the model. The errors, which are significant for low-magnitude short-duration earthquakes, can be eliminated by using the filtered shot-noise-type models (i. e. white noise, modulated by the envelope first, and then filtered).
Publication type Article
Publication Subtype Journal Article
Title On low-frequency errors of uniformly modulated filtered white-noise models for ground motions
Series title Earthquake Engineering and Structural Dynamics
DOI 10.1002/eqe.4290160307
Volume 16
Issue 3
Year Published 1988
Language English
Publisher Wiley
Larger Work Type Article
Larger Work Subtype Journal Article
Larger Work Title Earthquake Engineering and Structural Dynamics
First page 381
Last page 388
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