UCVM FAQ
Profiles
Official Version of UCVM
The current (May 2018) official release of UCVM is UCVM v17.1 which is the last release of the C-language version of UCVM. This can be obtained by cloning the UCVMC github repository. The UCVMP (Python language version of UCVM) release is under review, but is not currently used for research purposes.
Naming of CVMs
First, we should confirm which CVM you would like to work with. The naming of CVM's can be confusing, because the names have not been used consistently over the last few years. As of 2017, the CVM names have settled, and CVM-S4.26 refers to a specific tomography improved CVM.
CVM-S4.26 refers to a version of CVM-S4 that was developed using full 3D tomography by Po Chen and En-Jui Lee. It has a high min Vs (about 900m/s) and it defines Vp, Vs, and rho on a 500 meter spaced grid. It has no background model, and it is only defined to about 50km.
When you query it, UCVM does trilnear interpolation to determine material properties between grid points. If this is the CVM model you want to work with, you can download it from a public repository at:
Before you can query CVM-S4.26, UCVM must be built and installed on a Linux computer, such as USC HPC research computing center. If your group is used to building open-source software on Linux computers, then they may be able to work through the installation process described on the UCVM github wiki. I have gone through the UCVM installation process many times, and I know it can be challenging to new users.
If you are planning small-scale tests of the CVM-S4.26, we can provide a Virtual Box installation which would enable users to query CVM-S4.26 on a Mac.
