Utah FORGE: Seismic Velocity Models, February 2021

This dataset contains a map, showing the Utah FORGE seismic stations, and seismic velocity model data. There are 61 1-D velocity models which are in a compressed TAR file. A paper is referenced at the end of this description which discusses the use of these data in 3D modelling. The paper summary follows:

We expand the application of spatial autocorrelation (SPAC) from typical 1-D Vs profiles to quasi-3-D imaging via Bayesian Monte Carlo inversion (BMCI) using a dense nodal array (49 nodes) located at the Utah Frontier Observatory for Research in Geothermal Energy (FORGE) site. Combinations of 4 and 9 geophones in subarrays provide for 36 and 25 1-D Vs profiles, respectively. Profiles with error bars are determined by calculating coherency functions that fit observations in a frequency range of 0.2-5 Hz. Thus, a high-resolution quasi-3-D Vs model from the surface to 2.0 km depth is derived and shows that surface-parallel sedimentary strata deepen to the west, consistent with a 3-D seismic reflection survey. Moreover, the resulting Vs profile is consistent with a Vs profile derived from distributed acoustic sensing (DAS) data located in a borehole at the FORGE site. The quasi-3-D velocity model shows that the base of the basin dips ~22 degrees to the west and topography on the basement interface coincident with the Mag Lee Wash suggests that the bedrock interface is an unconformity.

Reference: Zhang, H. and K. L. Pankow (2021). High-resolution Bayesian spatial auto-correlation (SPAC) pseudo-3D Vs model of Utah FORGE site with a dense geophone array, Geophys. Res. Int, https://doi.org/10.1093/gji/ggab049

Data and Resources

Field Value
DOI 10.15121/1776592
accessLevel public
bureauCode {019:20}
catalog_@context https://openei.org/data.json
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dataQuality true
datagov_dedupe_retained 20250120155001
identifier https://data.openei.org/submissions/7412
issued 2021-02-28T07:00:00Z
landingPage https://gdr.openei.org/submissions/1294
license https://creativecommons.org/licenses/by/4.0/
modified 2021-12-17T18:53:33Z
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programCode {019:006}
projectLead Lauren Boyd
projectNumber EE0007080
projectTitle Utah FORGE
publisher Energy and Geoscience Institute at the University of Utah
resource-type Dataset
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source_hash 5785eb035106cbd87544ac667d07918a351dfc0d7134f28a6725433c90a457d4
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Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • 1d-seismic-velocity
  • AmeriGEO
  • AmeriGEOSS
  • CKAN
  • GEO
  • GEOSS
  • National
  • North America
  • United States
  • bayesian-monte-carlo-inversion
  • distributed-acoustic-sensing
  • egs
  • energy
  • forge
  • geophone
  • geophysics
  • geospatial-data
  • geothermal
  • milford
  • model
  • modeling
  • pseudo-3d
  • roosevelt-hot-springs
  • sedimentary-basin
  • seismic
  • seismic-data
  • seismic-noise
  • seismic-velocity
  • spac
  • spatial-auto-correlation
  • tar
  • utah
  • utah-forge
  • utah-geothermal
  • velocity
  • velocity-models
  • waveform-inversion
isopen True
license_id cc-by
license_title Creative Commons Attribution
license_url http://www.opendefinition.org/licenses/cc-by
maintainer Kristine Pankow
maintainer_email pankow@seis.utah.edu
metadata_created 2025-09-23T14:23:18.103085
metadata_modified 2025-09-23T14:23:18.103091
notes This dataset contains a map, showing the Utah FORGE seismic stations, and seismic velocity model data. There are 61 1-D velocity models which are in a compressed TAR file. A paper is referenced at the end of this description which discusses the use of these data in 3D modelling. The paper summary follows: We expand the application of spatial autocorrelation (SPAC) from typical 1-D Vs profiles to quasi-3-D imaging via Bayesian Monte Carlo inversion (BMCI) using a dense nodal array (49 nodes) located at the Utah Frontier Observatory for Research in Geothermal Energy (FORGE) site. Combinations of 4 and 9 geophones in subarrays provide for 36 and 25 1-D Vs profiles, respectively. Profiles with error bars are determined by calculating coherency functions that fit observations in a frequency range of 0.2-5 Hz. Thus, a high-resolution quasi-3-D Vs model from the surface to 2.0 km depth is derived and shows that surface-parallel sedimentary strata deepen to the west, consistent with a 3-D seismic reflection survey. Moreover, the resulting Vs profile is consistent with a Vs profile derived from distributed acoustic sensing (DAS) data located in a borehole at the FORGE site. The quasi-3-D velocity model shows that the base of the basin dips ~22 degrees to the west and topography on the basement interface coincident with the Mag Lee Wash suggests that the bedrock interface is an unconformity. Reference: Zhang, H. and K. L. Pankow (2021). High-resolution Bayesian spatial auto-correlation (SPAC) pseudo-3D Vs model of Utah FORGE site with a dense geophone array, Geophys. Res. Int, https://doi.org/10.1093/gji/ggab049
num_resources 3
num_tags 37
title Utah FORGE: Seismic Velocity Models, February 2021