| Abstract: | Empirical mb, Ms and Mo data are used to develop an average spectral scaling relation for plate-margin earthquakes. Using equations based upon a rectangular, bilateral dislocation model with uniform rupture velocity, the spectra give values of fault rupture length and width, static stress drop and average fault displacement as a function of mb, Ms and Mo. Compared to mid-plate earthquakes of the same seismic moment, the large average plate-margin earthquake has a bigger rupture length, rupture area and average fault displacement and a smaller rupture width and static stress drop. |
