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    • An Updated Vs30 Map for California with Geologic and Topographic Constraints (ver. 1.1, July 2022)

    Metadata Updated: October 29, 2025

    This data release provides a map of the time-averaged shear-wave velocity in the upper 30 m (Vs30) for California using the method described by Thompson and others (2014). There are two adjustments to the algorithm described by Thompson and others (2014), which is built on the geology-based Vs30 map by Wills and Clahan (2006). In this data release, we use the Wills and others (2015) updated geology-based Vs30 map. The second change is that we have adjusted the kriging procedure so that measured Vs30 values do not affect the predictions across distinctly different geologic units.

    Access & Use Information

    Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

    Downloads & Resources

    Dates

    Metadata Created Date September 12, 2025
    Metadata Updated Date October 29, 2025

    Metadata Source

    Harvested from DOI USGS DCAT-US

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date September 12, 2025
    Metadata Updated Date October 29, 2025
    Publisher U.S. Geological Survey
    Maintainer
    Identifier http://datainventory.doi.gov/id/dataset/usgs-5a5fa029e4b06e28e9bfc43a
    Data Last Modified 2022-07-12T00:00:00Z
    Category geospatial
    Public Access Level public
    Bureau Code 010:12
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Metadata Catalog ID https://ddi.doi.gov/usgs-data.json
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Harvest Object Id 06c36b0a-aa63-489e-b05a-9af480173913
    Harvest Source Id 2b80d118-ab3a-48ba-bd93-996bbacefac2
    Harvest Source Title DOI USGS DCAT-US
    Metadata Type geospatial
    Old Spatial -124.501041667, 32.498958335, -114.098958335, 42.101041667
    Source Datajson Identifier True
    Source Hash 32f947dad93f3206510ed2bf33b42bf7b1f0e00fb49758a13b20cd6f23648a44
    Source Schema Version 1.1
    Spatial {"type": "Polygon", "coordinates": -124.501041667, 32.498958335, -124.501041667, 42.101041667, -114.098958335, 42.101041667, -114.098958335, 32.498958335, -124.501041667, 32.498958335}

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