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A seismological stochastic model for earthquake ground-motion description is presented. Seismological models are based on the physical properties of the source and the medium and have significant advantages over the widely used empirical models. The model discussed here provides a convenient form for estimating structural response by using random vibration theory. A commonly used random process for ground acceleration, filtered white-noise multiplied by an envelope function, introduces some errors in response calculations for structures whose periods are longer than the faulting duration. An alternate random process, filtered shot-noise process, eliminates these errors.
Additional Publication Details
ON NONSTATIONARY STOCHASTIC MODELS FOR EARTHQUAKES.
Earthquake Engineering Research Inst
El Cerrito, CA, USA
Number of Pages:
Proceedings of the Third U. S. National Conference on Earthquake Engineering.