Autoregressive parameters for a suite of strong-motion accelerograms
- 1 December 1979
- journal article
- Published by Seismological Society of America (SSA) in Bulletin of the Seismological Society of America
- Vol. 69 (6) , 2025-2036
- https://doi.org/10.1785/bssa0690062025
Abstract
The time-adaptive technique of Jurkevics and Ulrych (1978) has been used to analyze a suite of rock-site accelerograms recorded during two ML = 6.4 earthquakes in California. One of the parameters which models the earthquake, the innovation variance σe2, has been found to vary with epicentral distance according to (σe2)max ∝ D-3.23. The shaking duration exhibits a linear variation with log(D) after a finite distance away from the fault. The above results allow the construction of artificial accelerograms for arbitrary epicentral distances ML = 6.4 earthquakes in California.Keywords
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