CFM 7.0 updates: peer review, web enhancements, and CRESCENT interoperability
Andreas Plesch, Scott T. Marshall, . CFM Evaluation Working Group, Mei-Hui Su, Ellen Yu, & John H. ShawSubmitted September 7, 2025, SCEC Contribution #14646, 2025 SCEC Annual Meeting Poster #TBD
We conducted a full peer evaluation of the central and northern California portions of CFM 7.0, which was released in the fall of 2024. For this evaluation, we subdivided these previously unreviewed portions of the model into five areas following the CFM naming hierarchy (KLMT-GVFA; SNLV; SFBY; CASC; OCCA). Each region included between 18 and 38 faults. For each area, we designated an evaluation leader who assembled a team of regional experts. The expert groups utilized updated 2D and 3D tools provided by the CFM Explorer and were guided in their evaluation by a set of questions both for each individual fault and for the overall fault area. In total, 132 faults were reviewed, and with significant feedback provided. A large majority of the faults received detailed suggestions for updates and 45 faults were recommended to be added to the model.
In collaboration with the SCEC IT group, we have updated the CFM Explorer to add an important and widely requested functionality: visualization of near real time and historic earthquake hypocenters along with faults in 2D and 3D and the ability to generate a direct hyperlink to preselected 2D or 3D views with preselected faults and recent USGS ComCat earthquakes.
Further, we are working to update the earthquake-to-fault association service that is widely used by the SCEC community when discussing near real time events. This service sends near real-time email notifications with the probabilities of which faults are most likely associated with earthquakes > M3 in southern California. The new earthquake-to-fault association service runs on the CFM 7.0 faults, providing the foundation for covering the entire state of California. The service will directly link to the CFM Explorer showing the most likely fault source and the hypocenter in 2D and 3D views. The updated service is in the testing phase but will be accessible to all SCEC account holders soon.
Finally, in collaboration with the Cascadia Region Seismic Center (CRESCENT), we reassessed the CFM representation of ten CA-OR border crossing faults based on available legacy industry seismic reflection data, detailed fault trace mapping, earthquake hypocenters and focal mechanism nodal planes. These updates partially address review comments and will be part of the next CFM release, along with a SLAB 2.0 based megathrust representation and CFM consistent statewide surfaces for seismogenic depth and topography.
Key Words
CFM, evaluation, meta, organization
Citation
Plesch, A., Marshall, S. T., CFM Evaluation Working Group, .., Su, M., Yu, E., & Shaw, J. H. (2025, 09). CFM 7.0 updates: peer review, web enhancements, and CRESCENT interoperability. Poster Presentation at 2025 SCEC Annual Meeting.
Related Projects & Working Groups
Community Earth Models (CEM)
