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    • Chance of moderate (MMI = VII) damaging earthquake shaking in 100 years

    Metadata Updated: September 15, 2025

    This data set portrays the spatial potential for damaging earthquake ground shaking quantified as moderate (MMI = VII) in 100 years. The maps and data are based on the average of the results obtained from peak ground acceleration and 1.0-second horizontal spectral acceleration. Site specific soil factors based on Vs30 shear wave velocities were implemented using a simple topographic proxy technique (Allen and Wald, 2009) and site amplification based on the relationships of Seyhan and Stewart (2014). MMI = VII is equivalent to peak ground acceleration of 0.2152g and 1.0-second horizontal spectral acceleration of 0.2256g (Worden et al., 2012) for the default site class (Vs30=760 m/s).

    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 September 15, 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 September 15, 2025
    Publisher U.S. Geological Survey
    Maintainer
    Identifier http://datainventory.doi.gov/id/dataset/usgs-59c15074e4b091459a5fae95
    Data Last Modified 2020-08-18T00:00:00Z
    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 7215b8e1-cc57-4dfe-a973-15385b114229
    Harvest Source Id 2b80d118-ab3a-48ba-bd93-996bbacefac2
    Harvest Source Title DOI USGS DCAT-US
    Metadata Type geospatial
    Old Spatial -84.9, -59.9, -20.1, 14.9
    Source Datajson Identifier True
    Source Hash 85b2debc8cc9a11e4fcef895a6abbef97c27323eaf9038694e13f9e2e482f924
    Source Schema Version 1.1
    Spatial {"type": "Polygon", "coordinates": -84.9, -59.9, -84.9, 14.9, -20.1, 14.9, -20.1, -59.9, -84.9, -59.9}

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