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San Francisco Bay region 3D seismic velocity model v21.0


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Aagaard, B.T., and Hirakawa, E.T., 2021, San Francisco Bay region 3D seismic velocity model v21.0: U.S. Geological Survey data release,


This three-dimensional (3D) seismic velocity model includes a detailed domain covering the greater San Francisco Bay urban region and a regional domain at a coarser resolution covering a larger region. Version 21.0 is a re-release of v08.3.0 in a new storage scheme. The model was constructed by assigning elastic properties (density, Vp, Vs, Qp, and Qs) to grids of points based on the geologic unit and depth from the ground surface. The model is stored in HDF5 files using the GeoModelGrids ( storage scheme (see the file for an overview). GeoModelGrids provides a high-level interface for accessing the model. The model can also be accessed using the HDF5 application programming interface [...]


Attached Files

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USGS_SFCVM_v21-0_bbox.kml 1.33 KB application/
1.04 GB application/x-hdf
1.97 GB application/x-hdf
USGS_SFCVM_v21-0_z10z25.tiff 1 MB image/geotiff
USGS_SFCVM_v21-0.shasums 285 Bytes text/plain 18.56 MB application/zip
README.txt 11.22 KB text/plain


This seismic velocity model was generated for three-dimensional seismic analyses, such as earthquake ground-motion simulations.

Additional Information


Type Scheme Key
DOI doi:10.5066/P98CA3D5

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