Poster #029, Computational Science (CS)
OpenSHA: New tools and file formats for building and analyzing UCERF3-style rupture sets and running inversions
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Poster Presentation
2021 SCEC Annual Meeting, Poster #029, SCEC Contribution #11351 VIEW PDF
parse and modify. We are currently in the process of updating the legacy UCERF3 file formats to be more user friendly, for use with UCERF4 and the 2023 update to the U.S. National Seismic Hazard Model (NSHM). In this new format, core data are stored in simpler or standard file-formats including CSV and GeoJSON.
As part of this process, we are developing a series of command-line tools that can be used by individual investigators to build their own UCERF3-like models or to modify components of the California model (e.g., updating or adding faults for site-specific analysis and running an inversion). Users can specify their own set of faults in a GeoJSON format, split those fault sections into sub-sections, and use the UCERF3 (or preliminary UCERF4) algorithm to build a Rupture Set from the set of possible single- and multi-fault ruptures on those sub-sections. Then, users can run a simulated annealing inversion on their Rupture Set to generate a Solution, view various model diagnostics including regional and fault magnitude frequency distributions, and compute and disaggregate hazard curves at sites.
These tools and file-formats are currently in active development, and we plan the release of a preview version with limited capabilities to be available for community feedback. Stable versions of the tools will be available before release of the 2023 update to the U.S. NSHM.
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As part of this process, we are developing a series of command-line tools that can be used by individual investigators to build their own UCERF3-like models or to modify components of the California model (e.g., updating or adding faults for site-specific analysis and running an inversion). Users can specify their own set of faults in a GeoJSON format, split those fault sections into sub-sections, and use the UCERF3 (or preliminary UCERF4) algorithm to build a Rupture Set from the set of possible single- and multi-fault ruptures on those sub-sections. Then, users can run a simulated annealing inversion on their Rupture Set to generate a Solution, view various model diagnostics including regional and fault magnitude frequency distributions, and compute and disaggregate hazard curves at sites.
These tools and file-formats are currently in active development, and we plan the release of a preview version with limited capabilities to be available for community feedback. Stable versions of the tools will be available before release of the 2023 update to the U.S. NSHM.
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Lightning Talk
Full Presentation
Citation: Milner, K. R., & Field, E. H. (2021, 08). OpenSHA: New tools and file formats for building and analyzing UCERF3-style rupture sets and running inversions. Poster Presentation at 2021 SCEC Annual Meeting.
Keywords: OpenSHA, UCERF3, UCERF4, Inversion, Hazard, PSHA, NSHM, NSHM23
SCEC Award: 21148
Relevant SCEC Themes:
Community Models
Probabilistic Seismic Hazard Analysis
