Toro, Abrahamson, and Schneider Attenuation
In this example, you can calculate peak ground acceleration and the psuedoacceleration spectrum at a site in eastern or central North America using attenuation relationships by Toro, Abrahamson, and Schneider, 1997. Note that the site-to-fault distance is closest horizontal distance to the vertical projection of the rupture and the relationship is valid over the range of 1 to 100 km only. The valid range of magnitudes is 5 < Mw < 8. Links to tables of coefficients can be found in Appendix A. Interactive examples for all attenuation relationships can be found in Attenuate©.