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HYBRID EMPIRICAL GROUND-MOTION PREDICTION EQUATIONS FOR EASTERN NORTH AMERICA USING NGA MODELS AND UPDATED SEISMOLOGICAL PARAMETERS (2011)

In the field of earthquake engineering, ground-motion prediction models are frequently used to estimate the peak ground acceleration (PGA) and the pseudospectral acceleration (PSA). In regions of the world where ground-motion recordings are plentiful, such as western North America (WNA), the ground-motion prediction equations are obtained using empirical methods. In other regions, such as eastern North America (ENA), with insufficient ground motion data, alternative methods must be used to develop ground-motion prediction equations (GMPEs). The hybrid empirical method is one such method used to develop ground-motion prediction equations in areas with sparse ground motions. This method employs the stochastic simulation method to adjust empirical GMPEs developed for a region with abundant strong motion recordings in order to estimate strong-motion parameters in a region with a sparse database. The adjustments take into account differences in the earthquake source, wave propagation, and site response characteristics between the two regions.
Reference:
Bulletin of the Seismological Society of America, Vol. 101, No. 4, pp. 1859–1870, August 2011
Organization:
Department of Civil Engineering The University of Memphis Memphis, Tennessee
USA
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