Updates to the SCEC Geologic Slip Rate Database (GSRD)

Sally F. McGill, Alex Hatem, Scott T. Marshall, Miranda Owen, Maria Mendoza Gutierrez, Mei-Hui Su, & Philip J. Maechling

Submitted September 7, 2025, SCEC Contribution #14744, 2025 SCEC Annual Meeting Poster #TBD

The first version of the SCEC Geologic Slip Rate Database (GSRD) was released in summer 2023. Here, we report on updates to the GSRD. The GSRD currently consists of spatially registered geologic fault slip rate estimates from previously published databases. The GSRD covers a rectangular region that encompasses all of California, Nevada, and a small portion of northern Mexico. The GSRD is hosted with the SCEC Community Earth Models and highlights the importance of slip rate estimates for a wide range of research activities. The USGS recently led an effort to compile published slip rate data along active faults in the western U.S. (Hatem et al., 2022) as part of the 2023 update to the U.S. National Seismic Hazard Model; this database also contains the slip rates compiled for the 3rd Uniform California Earthquake Rupture Forecast (Dawson and Weldon, 2013). The GSRD builds on these slip rate compilations and enhances the source database by providing web-based tools for users to quickly query, download, and visualize the existing slip rate data. The web tools also allow users direct web links to the GSRD references and the ability to upload their own spatial data (in .kml/.kmz format) to compare directly in the viewer with the GSRD. To keep the GSRD up to date when new data are published, the EGD homepage provides a user-submission tool for users to notify the GSRD maintainers of new/missing slip rate data. The USGS slip rate compilation only included references from 2020 and before. We are currently working to complete a systematic literature review to update the GSRD with new references since 2020. To help tie the GSRD to SCEC Community Earth Models, we wrote an algorithm that cross-references GSRD slip rate sites to the appropriate SCEC Community Fault Model object. Once the literature review is complete, we plan to release version 2 of the GSRD complete with a citable doi through Zenodo.org.

Key Words
geologic slip-rate database

Citation
McGill, S. F., Hatem, A., Marshall, S. T., Owen, M., Mendoza Gutierrez, M., Su, M., & Maechling, P. J. (2025, 09). Updates to the SCEC Geologic Slip Rate Database (GSRD). Poster Presentation at 2025 SCEC Annual Meeting.

Related Projects & Working Groups
Community Earth Models (CEM)