In his comment, Haddon attempts to refute the conclusions of our 1998 article, in which we evaluated proposed source models for eastern North America (ENA). We used a clearly defined procedure based on the well-known stochastic model to make ground-motion predictions based on each proposed source model, and then we compared the predicted motions with all recorded ENA data of M > 4. Haddon's objections to the stochastic approach, and more specifically to one of the evaluated source models (ours), are based on his theoretical interpretations. We disagree with almost all of Haddon's opinions and the manner in which he...

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