View source for SSA Velocity Model Workshop 2019

SSA 2019 Velocity Model Workshop

[[File:Ucvm ssa 2019 coverage.png|256px|thumb|right|Fig 1: Coverage regions for 3D velocity models included in the SSA 2019 UCVM VirtualBox distribution, including (Red) CVM-S4, (Blue) CVM-H, (inner Yellow) CCA06, (White) USGS Bay Area, and (outer Yellow) Digital Elevation Model]]

== Pre-Workshop Announcements and Instructions ==
*[https://www.seismosoc.org/annual-meeting/workshops/#velocity-models Velocity Model Workshop Description]
*[http://hypocenter.usc.edu/research/SSA/Pre_Workshop_Instructions.pdf Pre-Workshop Instruction (pdf)]

== Velocity Model Image ==
A VirtualBox image file (also known as an Appliance file) containing the UCVM software and 4 California Velocity models is available for download from a SCEC server. This link will download a large file, and, depending on your network connection, it may take 30 minutes, or more, to download.

*[http://hypocenter.usc.edu/research/SSA/ucvm_ssa_2019.ova UCVM SSA 2019 Virtual Box Image] (17GB download from SCEC servers)

== Detailed UCVM VirtualBox Installation Guide ==
*[http://hypocenter.usc.edu/research/SSA/SCEC_UCVM_VirtualBox_Installation_Guide.pdf UCVM VirtualBox Installation Guide]

== Workshop UCVM Presentation and Tutorial Handouts ==
*[http://hypocenter.usc.edu/research/SSA/SCEC_UCVM_SSA_Overview.pdf UCVM Overview Presentation]
*[http://hypocenter.usc.edu/research/SSA/SCEC_UCVM_SSA_Tutorial.pdf UCVM Tutorial Presentation]
*[http://hypocenter.usc.edu/research/SSA/SCEC_UCVM_SSA_Workshop_Tutorial_2019.pdf UCVM Tutorial Users Guide]

== CVM Coverage Regions ==
A Google Earth KML format file showing the coverage area of UCVM SSA models:
*[http://hypocenter.usc.edu/research/SSA/ucvm_ssa_2019.kml UCVM SSA CVM Model Regions in KML format] This shows the coverage region for the 4 CVMs included in the SSA workshop VirtualBox version of UCVM.

A Google Earth KML format file showing the coverage area of eight (8) California velocity models included in the latest version of UCVM v19.4:
*[http://hypocenter.usc.edu/research/SSA/UCVM_v19_4_Coverage_Regions_v1.kml UCVM v19.4 CVM Model Regions in KML format] This shows the coverage region for the eight (8) CVMs included in the most recent release of the SCEC UCVM software.

== California Velocity Models In UCVM VirtualBox Image ==
The Virtual Box Image prepared for this workshop contains 4 California Velocity Models
*[[CVM-H]]: Southern California Velocity Model developed by Harvard Structural Geology Group with optional geotechnical layer	cvmh
*[[CVM-S4]]: Southern California Velocity Model developed by SCEC, Caltech, USGS Group with geotechnical layer	cvms
*[https://earthquake.usgs.gov/data/3dgeologic/ USGS Bay Area]: USGS developed San Francisco and Central California velocity model	cencal
*CCA06:	Central California Area Velocity Model at iteration 6 with added optional Ely-Jordan GTL

== md5sum for Image file ==
Since this is a large file, you can check the integrity of the downloaded file using md5sum tools:
On a Linux system, download the md5sum file, then run the following command to verify the image file was downloaded without errors:
[http://hypocenter.usc.edu/research/ucvmc_result/ucvm_ssa_2019.ova.md5 md5 checksum file for Linux] 
<pre>
$ md5sum -c ucvm_ssa_2019.ova.md5
</pre>
On a mac, you can check the file using the md5 utility:
<pre>
$ MD5 (ucvm_ssa_2019.ova) = e4f4597beccb42c3ad708d5972380bfc
</pre>

== Smaller UCVM Image Available ==
If the disk requirements (60GB) free for the SSA workshop image are too much for your system, a smaller VirtualBox image, with fewer CVMs, prepared for an earlier workshop is available on this SCEC webpage:
*[https://www.scec.org/workshops/2018/software 2018 UCVM Workshop]

== California Velocity Models in NetCDF format ==
These Netcdf format files contain 1km resolution versions of three of the California velocity models contained in the SSA UCVM VirtualBox software distribution.
*[http://hypocenter.usc.edu/research/SSA/mesh_cencal.nc USGS Bay Area Model (cencal)] (435Mb)
*[http://hypocenter.usc.edu/research/SSA/mesh_cvmh.nc CVM-H Model (cvmh)] (435Mb)
*[http://hypocenter.usc.edu/research/SSA/mesh_cvms.nc CVM-S Model (cvms)] (435Mb)

== Processing UCVM Data and Metadata files ==
The UCVM plotting scripts output metadata and binary data files. The following wiki entries describes how these files can be used to plot the results in an external plotting program.
*[[UCVMC_How_to_process_bin_data]]

== Workshop Follow-up Information ==
*[https://github.com/SCECcode/UCVMC/wiki/Geotechnical-Layer-(GTL) Infor on Geotechnical layer]
*[https://elygeo.net/2016-Vs30GTL-Ely+4.html Ely Jordan GTL]

== UCVM Poster at SSA 2019 ==
The UCVM poster we are presenting at SSA 2019 is available here:
*[http://hypocenter.usc.edu/research/SSA/UCVM_SSA_Poster_2019.pdf UCVM SSA Poster 2019]

== Related Entries ==
*[[UCVM]]
*[[CVM-H]]