Ray J. Weldon II Thomas Parsons Chris J. Wills Timothy E. Dawson Ross S. Stein Mark D. Petersen Edward H. Field 2008 This appendix discusses how we compute the magnitude and rate of earthquake ruptures for the seven Type-A faults (Elsinore, Garlock, San Jacinto, S. San Andreas, N. San Andreas, Hayward-Rodgers Creek, and Calaveras) in the WGCEP/NSHMP Earthquake Rate Model 2 (referred to as ERM 2. hereafter). By definition, Type-A faults are those that have relatively abundant paleoseismic information (e.g., mean recurrence-interval estimates). The first section below discusses segmentation-based models, where ruptures are assumed be confined to one or more identifiable segments. The second section discusses an un-segmented-model option, the third section discusses results and implications, and we end with a discussion of possible future improvements. General background information can be found in the main report. application/pdf 10.3133/ofr20071437G en U.S. Geological Survey Development of final a-fault rupture models for WGCEP/ NSHMP Earthquake Rate Model 2 reports