This paper addresses discrepancies in predicted maximum earthquake magnitudes (Mmax) obtained when using empirical relations and paleoearthquake data. To assess the seismic hazard for a particular fault source, it is necessary to estimate Mmax for that source. This is typically estimated using empirical relations derived from historical earthquake data that relate coseismic fault-rupture parameters (e.g., length, displacement, and area) to magnitude (e.g., Bonilla et al. 1984; Wells and Coppersmith 1994; Mason 1996; Leonard 2010). Paleoearthquake parameters estimated from paleoseismological studies are then used to predict Mmax with...

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