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References

Philip Maechling edited this page Nov 14, 2022 · 8 revisions

DEM and GTL Data Sources

A state-wide California standard topography map is distribued with UCVM. This is a statewide topography map, that also includes statewide Vs30 values, combined into an etree structure.

Toopgrahy and Vs30 Map NameDescriptionUCVM Abbreviation
USGS NED DEM and Thompson Vs30, 2018California elevation and Vs30 data in etree formatucvm
USGS NED DEM and Allen-Wald Vs30, 2007Utah elevation and Vs30 data in etree formatucvm_utah

  • 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, doi:10.5066/F7JQ108S.

  • For regions outside of California, UCVM uses the Allen, Wald topography to Vs30 relationship: Allen, T.I., and Wald, D.J., 2007, Topographic slope as a proxy for global seismic site conditions (VS30) and amplification around the globe: U.S. Geological Survey Open-File Report 2007-1357, 69 p.

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