The Composite Source Model for Broadband Simulations of Strong Ground Motions

John G. Anderson

Published February 2015, SCEC Contribution #1997

My goal is to generate synthetic strong ground motions that are sufficiently realistic to be useful for engineering applications. The composite source model (CSM) uses a kinematic source model for rupture on a finite fault. This source is propagated to the station using a flat-layered velocity model, scattering, and attenuation that can be measured from independent seismological observations. A key objective is to reproduce the wave propagation within the constraints of the measured velocity and Q structure. This paper summarizes the CSM as implemented for the SCEC Broadband Platform validation exercise (Goulet and Abrahamson, 2014).

Citation
Anderson, J. G. (2015). The Composite Source Model for Broadband Simulations of Strong Ground Motions . Seismological Research Letters, 86(1), 68-74. doi: 10.1785/0220140098.

Related Projects & Working Groups
Ground-Motion Prediction