Ground-motion attenuation equations for rock sites in central and eastern North America are derived, based on the predictions of a stochastic ground-motion model. Four sets of attenuation equations are developed (i.e., 2 crustal regions × 2 magnitude scales). The associated uncertainties are derived by considering the uncertainties in parameter values, as well as those uncertainties associated with the ground-motion model itself. Comparison to data shows a reasonable agreement. Comparison to other attenuation functions for the region shows consistency with most attenuation functions in current use.

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