Abstract

Abstract We present a simple and robust approach to estimate moment magnitude ( M ) for events of M M can be estimated from 1‐Hz response spectral amplitudes for events in North America with an uncertainty (standard deviation of residuals) of M across regions, and that it provides relationships that are consistent with the predictions of a stochastic point‐source model for typical regional attenuation models. Online Material: Table of events for which the moment magnitude was estimated.

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