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This wiki documents SCEC's UCVM source code repository for UCVM v21.10. This version of UCVM integrates new velocity models and new capabilities.
The SCEC Unified Community Velocity Model (UCVM) software is used to access information, including estimated Vp and Vs seismic wave velocities and density, about the earth's crust.
UCVM provides seismic velocity information for several California regions. Seismic velocities of rocks and sediments at shallow depths determine how strongly an area will shake. By assigning velocities to rock types in the 3-D geologic model, geologists can gain an understanding of the extent of areas of low shear velocity that are most likely to experience localized strong shaking and future earthquake damage. An important application for UCVM is for use in computer simulations of California earthquakes.
The Unified Community Velocity Model (UCVM) software framework is a collection of software tools designed to provide a standard interface to multiple, alternative, California velocity models. UCVM development is an interdisciplinary research collaboration involving geoscientists, computer scientists, and software developers. UCVM is used in high resolution 3D wave propagation simulations for California.
To simplify UCVM software development, we have separated the previous version of the UCVM software (called UCVM v19.4) into a collection of compatible software packages. The following collection of repositories are now used to manage UCVM software.
- This UCVM github repository is for the UCVM core package that provides the UCVM query interface.
- The velocity models are managed in their own github repositories (e.g. CVM-S4, CVM-H v15.1, CVM-S4.26, CVM-S4.26.M01).
- UCVM plotting scripts are now located in the UCVM plotting package github repository.
UCVM is distributed as open-source scientific software. It can be installed compiled and run on most Linux-based computer systems if the system includes software development tools including Python, C, and Fortran compilers, and other software tools.
Online UCVM documentation is available at:
Additional documentation advanced features and previous versions of UCVM are posted at:
Issue Tracking:
- GitHub: UCVM Github Issues Email:
- Contact: [email protected]
UCVM was developed with support from National Science Foundation (NSF), US Geological Survey (USGS), and other sources.
UCVM software repository contains a software codebase developed by Patrick Small, Mei-Hui Su, Philip Maechling, David Gill, and others at SCEC.
References help us obtain continued financial support for the development of the UCVM software. If you use the UCVM software in your research, please include a reference to UCVM in your research publications. The preferred reference for the UCVM software is:
Small, P., Gill, D., Maechling, P. J., Taborda, R., Callaghan, S., Jordan, T. H., Ely, G. P., Olsen, K. B., & Goulet, C. A. (2017). The SCEC Unified Community Velocity Model Software Framework. Seismological Research Letters, 88(5). doi:10.1785/0220170082.
The UCVM software is released using a BSD-3 open-source license. Please see the LICENSE file for distribution license and disclaimers. The underlying velocity models may be released under their own open-source license.
