On low-frequency errors of uniformly modulated filtered white-noise models for ground motions
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).
Citation Information
Publication Year | 1988 |
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Title | On low-frequency errors of uniformly modulated filtered white-noise models for ground motions |
DOI | 10.1002/eqe.4290160307 |
Authors | Erdal Safak, David M. Boore |
Publication Type | Article |
Publication Subtype | Journal Article |
Series Title | Earthquake Engineering and Structural Dynamics |
Index ID | 70013694 |
Record Source | USGS Publications Warehouse |