Integration of Standalone CVM-H Basin Models into the Unified Community Velocity model(UCVM) Software

Mei-Hui Su, Philip J. Maechling, Scott Callaghan, Andreas Plesch, & John H. Shaw

Published September 11, 2022, SCEC Contribution #12567, 2022 SCEC Annual Meeting Poster #121 (PDF)

Poster Image: 
Several different seismic velocity models have been developed for California and the western United States and new models are under active development. While the geographic regions for these models may overlap, they are often defined for different regional volumes, at different resolutions, and are stored in different data formats. The SCEC Unified Community Velocity Model (UCVM) software offers a standardized interface to these existing seismic velocity models. New seismic velocity models can be registered into UCVM, and then the software can be used to query these models for earth properties (Vp, Vs, density) by latitude, longitude, and depth in a uniform way.

In recent years, the SCEC research community has developed a modular approach to developing and defining seismic velocity models. In this modular approach, small but detailed basin models are defined as standalone models. To take advantage of this approach, UCVM has adopted a unified interface to these basin models and enabled
embedding of these basin models in large-scale regional models that might otherwise have no other basin information.

We have registered nine (9) CVM-H basin models into UCVM as standalone models. These basin models can be queried independently and can be embedded into other models using a UCVM capability called tiling. In our poster, we describe the most recent UCVM v22.7 software release which includes ten (10) 3D seismic velocity models, two (2) 1D seismic velocity models, and nine (9) standalone CVM-H basin models and show how to create new composite velocity models when standalone basin models are tiled with other regional velocity models registered in UCVM.

Key Words
Seismic Velocity Model

Citation
Su, M., Maechling, P. J., Callaghan, S., Plesch, A., & Shaw, J. H. (2022, 09). Integration of Standalone CVM-H Basin Models into the Unified Community Velocity model(UCVM) Software. Poster Presentation at 2022 SCEC Annual Meeting.


Related Projects & Working Groups
Computational Science (CS)