Group B, Poster #302, Research Computing (RC)
New Seismic Hazard Research Capabilities and Software Improvements in OpenSHA v25.4
Poster Image:
Poster Presentation
2025 SCEC Annual Meeting, Poster #302, SCEC Contribution #14464 VIEW PDF
ctiles and curves.
The OpenSHA Hazard Curve Control Panel now integrates a Generalized Conditional Intensity Measure (GCIM) option, which allows users to refine their selection of ground motions conditioned on specific earthquake scenarios.
OpenSHA software and model distribution have been improved by integrating the open-source GetFile software framework, which helps retrieve validated and versioned ERF data, decoupling data from release cycles and improving reliability.
To improve accessibility and transparency, we installed and configured OpenSHA-based UCERF3-ETAS simulations on a variety of HPC environments, including USC CARC Discovery, SDSC Expanse, TACC Stampede3, and TACC Frontera. We have also installed two UCERF3-ETAS apps into the Quakeworx science gateway. One of which is designed to configure and run simulations that generate aftershock probabilities following significant California earthquakes. This capability was used for several recent earthquakes, including the March 9, 2025 M4.1 Malibu event and the April 14, 2025 M5.3 Julian earthquake. In addition, we installed a tutorial app that was used during a SCEC Cybertraining workshop conducted in January 2025, where more than 60 early-career scientists and engineers participated.
We are planning several additional capabilities for future releases of OpenSHA, including an Intensity Measure Event Set Calculator, time-dependent earthquake forecast tools, improvements in software distribution tools, and documentation. This work will ensure that OpenSHA continues to provide essential capabilities that implement and deliver the best available science to the seismic hazard and seismic risk communities.
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The OpenSHA Hazard Curve Control Panel now integrates a Generalized Conditional Intensity Measure (GCIM) option, which allows users to refine their selection of ground motions conditioned on specific earthquake scenarios.
OpenSHA software and model distribution have been improved by integrating the open-source GetFile software framework, which helps retrieve validated and versioned ERF data, decoupling data from release cycles and improving reliability.
To improve accessibility and transparency, we installed and configured OpenSHA-based UCERF3-ETAS simulations on a variety of HPC environments, including USC CARC Discovery, SDSC Expanse, TACC Stampede3, and TACC Frontera. We have also installed two UCERF3-ETAS apps into the Quakeworx science gateway. One of which is designed to configure and run simulations that generate aftershock probabilities following significant California earthquakes. This capability was used for several recent earthquakes, including the March 9, 2025 M4.1 Malibu event and the April 14, 2025 M5.3 Julian earthquake. In addition, we installed a tutorial app that was used during a SCEC Cybertraining workshop conducted in January 2025, where more than 60 early-career scientists and engineers participated.
We are planning several additional capabilities for future releases of OpenSHA, including an Intensity Measure Event Set Calculator, time-dependent earthquake forecast tools, improvements in software distribution tools, and documentation. This work will ensure that OpenSHA continues to provide essential capabilities that implement and deliver the best available science to the seismic hazard and seismic risk communities.
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Lightning Talk
Full Presentation
Citation: Bhatthal, A., & Maechling, P. J. (2025, 09). New Seismic Hazard Research Capabilities and Software Improvements in OpenSHA v25.4. Poster Presentation at 2025 SCEC Annual Meeting.
Keywords: OpenSHA,UCERF3-ETAS
SCEC Award: 25286
Relevant SCEC Themes:
Research Computing & Cyberinfrastructure
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