SCEC Unified Community Velocity Model (UCVM)
UCVM Software Developers
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Software Repository
Scientific Point of Contact
Distribution Formats
SCEC GitHub source code
Docker Images Mailing List
Join UCVM mailing list for announcements, new releases
User Resources Software License
BSD-3
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Overview
The Unified Community Velocity Model (UCVM) software framework is designed to provide a standard programmatic interface to multiple seismic velocity models. One important use of UCVM is to create velocity meshes for use as input parameters for high resolution 3D wave propagation simulations. UCVM development is an interdisciplinary research collaboration involving geoscientists and computer scientists. Collaborating geoscientists develop, improve, and validate seismic velocity models. UCVM computer scientists integrate velocity models, geotechnical models, and associated processing utilities into a single software framework. UCVM is open-source scientific software designed to support earth scientists, civil engineers, and other groups interested in detailed information about earth properties. UCVM is primarily used by scientists to work with earth material properties on regional scales.
Current Release
http://moho.scec.org/UCVM_web/web/viewer.php
Release Notes
- Nine southern California basin models have been registered into UCVM. These basin models were extracted from CVM-H and they typically extend down to approximately 5km.
- Los Angeles Basin
- Santa Maria Basin
- Ridge Basin
- San Bernardino Basin
- San Gabriel Basin
- Salton Trough
- Santa Barbara Channel
- Ventura Basin
- Inner Borderland
- Validation tests were added to confirm query by elevation and query by depth for each registered models.
- Installation of the large (~70GB) CyberShake velocity models (cs173and cs173h) were removed as download options.
- Software issues with UCVM installations that installed multiple models including CVM-S, CVM-SI, and WFCVM were resolved.
- Documentation was updated to describe limitations on query by elevation/query by depth for certain UCVM models.
- California Vs30 models was updated to Thompson 2018 v2.0 (see reference below)
Sponsored by
User Resources
- Software Documentation: https://github.com/SCECcode/ucvm/wiki
- Email support: software@scec.org
- Issue Reporting: https://github.com/SCECcode/ucvm/issues
- Join UCVM mailing list for announcements about new releases.
- Community Wiki: https://strike.scec.org/scecpedia
- UCVM is designed to compile and run on recent Linux distributions.
- UCVM Docker images can be run on computers with current Docker clients including Windows, macOS 12+, and Linux.
Developer Resources
- https://github.com/SCECcode/cvmhbn
- https://github.com/SCECcode/cvmsi
- https://github.com/SCECcode/cvms
- https://github.com/SCECcode/wfcvm
- https://github.com/SCECcode/cvms5
- https://github.com/SCECcode/CCA
- https://github.com/SCECcode/cvmh
- https://github.com/SCECcode/cencal
- https://github.com/SCECcode/coachella
- https://github.com/SCECcode/imperial
- https://github.com/SCECcode/cs173h
- https://github.com/SCECcode/cs173
- https://github.com/SCECcode/albacore
Create UCVM Docker scripts
Supporting Documentation
Previous Versions
How to Cite
- Shaw, J. H., A. Plesch, C. Tape, M. P. Suess, T. H. Jordan, G. Ely, E. Hauksson, J. Tromp, T. Tanimoto, R. Graves, K. Olsen, C. Nicholson, P. J. Maechling, C. Rivero, P. Lovely, C. M. Brankman, J. Munster (2015). Unified Structural Representation of the southern California crust and upper mantle. Earth and Planetary Science Letters. 415 1, doi: 10.1016/j.epsl.2015.01.016 SCEC Contribution 2004
- Magistrale, H, Day, S, Clayton, RW, Graves, RW (2000) The SCEC southern California reference three-dimensional seismic velocity model version 2. Bulletin of the Seismological Society of America 90(6B): S65–S76.
- Kohler, MD, Magistrale, H, Clayton, RW (2003) Mantle heterogeneities and the SCEC reference three-dimensional seismic velocity model version 3. Bulletin of the Seismological Society of America 93(2): 757–774. SCEC Contribution 630
- Lee, E.-J., P. Chen, T. H. Jordan, P. J. Maechling, M. A. M. Denolle, and G. C.Beroza (2014), Full 3-D tomography for crustal structure in Southern California based on the scattering-integral and the adjoint-wavefield methods, J. Geophys. Res. Solid Earth, 119, doi:10.1002/2014JB011346. SCEC Contribution 6093
- Brocher, Tom & Aagaard, Brad & Simpson, R. & Jachens, R.. (2006). The USGS 3D Seismic Velocity Model for Northern California. AGU Fall Meeting Abstracts. -1. 1266.
- Bowden, D. C., Kohler, M. D., Tsai, V. C., & Weeraratne, D. S. (2016). Offshore southern California lithospheric velocity structure from noise cross-correlation functions. Journal of Geophysical Research, 121(5), 3415-3427. doi: 10.1002/2016JB012919.
- Persaud P., Y. Ma, J. M. Stock, J. Hole, G. Fuis and L. Han (2016), Fault zone characteristics and basin complexity in the southern Salton Trough, California, Geology, 44(9), p. 747-750, doi:10.1130/G38033.1.
- Ajala, R., Persaud, P., Stock, J. M., Fuis, G. S., Hole, J. A., Goldman, M., & Scheirer, D. (2019). Three‐Dimensional Basin and Fault Structure From a Detailed Seismic Velocity Model of Coachella Valley, Southern California. Journal of Geophysical Research: Solid Earth,. doi: 10.1029/2018JB016260. https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2018JB016260
- Magistrale, H, Olsen, KB, Pechmann, JC (2008) Construction and verification of a Wasatch front community velocity model. Technical report no. HQGR.060012, 14 pp. Reston, VA: US Geological Survey.
- Lin, G., C. H. Thurber, H. Zhang, E. Hauksson, P. Shearer, F. Waldhauser, T. M. Brocher, and J. Hardebeck (2010), A California statewide three-dimensional seismic velocity model from both absolute and differential times. Bulletin of the Seismological Society of America, 100, 225-240. doi: 10.1785/0120090028. SCEC Contribution 1360
- Ely, G., T. H. Jordan, P. Small, P. J. Maechling (2010), A Vs30-derived Near-surface Seismic Velocity Model Abstract S51A-1907, presented at 2010 Fall Meeting, AGU, San Francisco, Calif., 13-17 Dec.
- Wald, D. J., and T. I. Allen (2007), Topographic slope as a proxy for seismic site conditions and amplification, Bull. Seism. Soc. Am., 97 (5), 1379-1395, doi:10.1785/0120060267.
- Wills, C. J., and K. B. Clahan (2006), Developing a map of geologically defined site-condition categories for California, Bull. Seism. Soc. Am., 96 (4A), 1483-1501, doi:10.1785/0120050179.
Thompson California Vs30 Model
- Thompson, E.M. (2018), An Updated Vs30 Map for California with Geologic and Topographic Constraints (ver. 2.0, July 2022): U.S. Geological Survey data release, https://doi.org/10.5066/F7JQ108S.
Selected Publications
- Jia, Z., & Clayton, R.W. (2021). Determination of Near Surface Shear‐Wave Velocities in the Central Los Angeles Basin With Dense Arrays. Journal of Geophysical Research: Solid Earth, 126.
- Maechling P, Gill D, Taborda R, Shaw J, Plesch A, Olsen K, Jordan T, and Goulet C (2018) The SCEC UCVM Software Framework for Distributing and Querying Seismic Velocity Models Broadband Platform. Proceedings of the 11th National Conference in Earthquake Engineering, Earthquake Engineering Research Institute, Los Angeles, CA. 2018
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Plesch, A., Thurber, C. H., Tape, C., & Shaw, J. H. (2021, 08). The SCEC CVM effort: basin models, enhanced access and tomographic updates. Oral Presentation at SCEC Annual Meeting.