Validation of the SCEC Broadband Platform V14.3 Simulation Methods Using Pseudo Spectral Acceleration Data

Douglas S. Dreger, Gregory C. Beroza, Steven M. Day, Christine A. Goulet, Thomas H. Jordan, Paul A. Spudich, & Jonathan P. Stewart

Published December 17, 2014, SCEC Contribution #1983

This article summarizes the evaluation of ground‐motion simulation methods implemented on the Southern California Earthquake Center (SCEC) Broadband Platform (BBP), version 14.3 (as of March 2014). A seven‐member panel, the authorship of this article, was formed to evaluate those methods for the prediction of pseudospectral accelerations (PSAs) of ground motion. The panel’s mandate was to evaluate the methods using tools developed through the validation exercise (Goulet et al., 2015) and to define validation metrics for the assessment of the methods’ performance. This article summarizes the evaluation process and conclusions from the panel. The five broadband, finite‐source simulation methods on the BBP include two deterministic approaches herein referred to as CSM (Anderson, 2015) and UCSB (Crempien and Archuleta, 2015); a band‐limited stochastic white noise method called EXSIM (Atkinson and Assatourians, 2015); and two hybrid approaches, referred to as G&P (Graves and Pitarka, 2015) and SDSU (Olsen and Takedatsu, 2015), which utilize a deterministic Green’s function approach for periods longer than 1 s and stochastic methods for periods shorter than 1 s.

Citation
Dreger, D. S., Beroza, G. C., Day, S. M., Goulet, C. A., Jordan, T. H., Spudich, P. A., & Stewart, J. P. (2014). Validation of the SCEC Broadband Platform V14.3 Simulation Methods Using Pseudo Spectral Acceleration Data. Seismological Research Letters, 86(1), 39-47. doi: 10.1785/0220140118.

Related Projects & Working Groups
Ground-Motion Prediction, Community Modeling Environment