Summary

The SCEC Community Geodetic Model (CGM) is a long-term effort to integrate GNSS and InSAR data from the modern satellite-based geodetic era in a self-consistent, rigorous, and open manner. This integration aims to derive secular and time-dependent surface velocity and strain rate fields across California.

We hosted a one-day CGM Workshop in conjunction with the SCEC Annual Meeting on Saturday, September 7th, 2024, at the Hilton Palm Springs in California. The workshop aimed to identify key research issues, educate users, and address critical questions in the context of SCEC science goals. We invited diverse expertise to contribute to and benefit from extending the CGM’s temporal and geographic range statewide.

The workshop announcement targeted current or potential users and contributors, encouraging early-career students, postdocs, researchers, and faculty to help shape the next generation of the CGM. Due to space limitations, interested individuals were asked to apply in advance. We accommodated 28 in-person participants and one online participant.

The workshop featured initial presentations to introduce recent research by CGM Working Group members and the wider community, demonstrations of CGM activities, products and access to date, breakout groups for feedback and input, and open discussions to map out pressing research and future directions. 

In our original workshop proposal, we aimed to achieve two major outcomes: (1) expanding geographic interest and CGM contributors/users, and (2) providing guidance for geodesy in general and the CGM specifically during years 2 and 3 of the current Statewide California Earthquake Center. The workshop successfully attracted participants, especially those focused on northern California, thereby broadening geographic scope and expertise. We also encouraged early-career participants to attend and have their voices heard. We received detailed feedback and priorities for future CGM development. Immediate tasks include improving product accessibility, advertising, exploration, and providing searchable online documentation and metadata with working examples. We concluded with renewed enthusiasm for the collective effort and increased awareness among the geodetic and user communities. The SCEC CGM was prominently mentioned in presentations and posters throughout the remainder of the SCEC Annual Meeting.