Appendix F. Determining earthquake recurrence rates

For each earthquake, a set of source parameters must be chosen that determines the initial condition for propagation modeling. Earthquakemagnitude is the primary parameter that links other source parameters such as rupture area and average amount of slip. Unlike deterministic modeling in which recurrence rates are not considered, probabilistic modeling requires the determination of recurrence rate for each source used in inundation modeling. Recurrence rates can be determined from frequency-magnitude distributions as follows.