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Implementation and Application of GEM's Openquake Software on Palmetto Cluster

Peyghaleh et al.

Physical risk



This study presents the implementation of Global Earthquake Model’s (GEM) OpenQuake software on the Clemson University’s High Performance Computing (HPC) system, the Palmetto cluster, to get the advantage of its multitasking feature to run various seismic hazard analysis. This way of installation of OpenQuake provides a new state-of-the-art scenario-based analysis as well as probabilistic seismic hazard analysis (PSHA) in a large-scale area with high-resolution output in a reasonable runtime. This study also presents the application of both classical PSHA and event based PSHA in California for various site conditions using the high-resolution VS30 soil profile throughout the whole region. The results of event-based PSHA includes the stochastic earthquake catalogues worth for 10,000 years, which is calibrated with USGS earthquake catalogue for California State. In addition, both classical and event-based analysis provide the hazard curves and maps in terms of PGA and SA (multiple periods) with multiple probabilities of exceedance in 50-year for the study area. For sample locations in San Francisco and Los Angeles, these generated curves are calibrated with the ones provided by USGS, in order to verify the installation of OpenQuake on the Palmetto cluster.

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