Implements the Subduction Interface GMPE of Atkinson & Macias (2009) for large interface earthquakes in the Cascadia subduction zone. Atkinson, G. M. and Macias, M. (2009) “Predicted Ground Motions for Great Interface Earthquakes in the Cascadia Subduction Zone”, Bulletin of the Seismological Society of America, 99(3), 1552 - 1578
Supported intensity measure component is assumed to be equivalent to the random horizontal component
Supported intensity measure types are peak ground acceleration and Spectral Acceleration
Supported standard deviation types is total.
The GMPE is derived for subduction interface earthquakes in Cascadia
Required distance measure is rupture distance
Required rupture parameters are magnitude
No required site parameters, the GMPE is derived for B/C site conditions