ON LOW-FREQUENCY ERRORS OF UNIFORMLY MODULATED FILTERED WHITE-NOISE MODELS FOR GROUND MOTIONS.

被引：0

作者：

Safak, Erdal ^{[1
]}

Boore, David M. ^{[1
]}

机构：

[1] US Geological Survey, Menlo Park,, CA, USA, US Geological Survey, Menlo Park, CA, USA

来源：

Earthquake Engineering & Structural Dynamics | 1988年 / 16卷 / 03期

关键词：

EARTHQUAKES - MATHEMATICAL MODELS - NOISE; SPURIOUS SIGNAL - White Noise - SIGNAL FILTERING AND PREDICTION;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

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).

引用

页码：381 / 388