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    • Alaska permafrost characterization: Electrical Resistivity Tomography (ERT) data collected in 2021

    Metadata Updated: January 21, 2026

    Geophysical measurements were collected by the U.S. Geological Survey (USGS) at five sites in Interior Alaska in September 2021 for the purposes of imaging permafrost structure and quantifying variations in subsurface moisture content in relation to thaw features. Electrical resistivity tomography (ERT) measurements were made along transects 110 - 222 m in length to quantify subsurface permafrost characteristics. ERT transects were collected across a fireline boundary within the Bonanza Creek Long Term Ecological Research (LTER) site where repeat measurements have been made since 2014; across and adjacent to two thermokarst lakes, Vault Lake and Goldstream Lake; and along two profiles at the North Star golf course in Fairbanks, Alaska. Models of electrical resistivity produced from these data revealed the distribution of frozen and thawed soil to depths of 10-40 m below the surface. Manual permafrost-probe measurements of thaw depths were collected at set intervals along each ERT transect used for comparison to the geophysical measurements, except at the North Star golf course where shallow permafrost was absent.

    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 January 11, 2026
    Metadata Updated Date January 21, 2026

    Metadata Source

    Harvested from DOI USGS DCAT-US

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date January 11, 2026
    Metadata Updated Date January 21, 2026
    Publisher U.S. Geological Survey
    Maintainer
    Identifier http://datainventory.doi.gov/id/dataset/USGS_62fe55a6d34e3a44428750a5
    Data Last Modified 2022-10-12T00:00:00Z
    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
    Datagov Dedupe Retained 20260121062710
    Harvest Object Id bd831688-bf1f-47d3-961e-0c6828ec2e8c
    Harvest Source Id 2b80d118-ab3a-48ba-bd93-996bbacefac2
    Harvest Source Title DOI USGS DCAT-US
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": -148.297120, 65.030609, -148.297120, 64.711801, -147.635486, 64.711801, -147.635486, 65.030609, -148.297120, 65.030609}
    Source Datajson Identifier True
    Source Hash b23b79088db5b30e3e670e58d1122f64b6916f572afea15b41afe6e0469cfe5f
    Source Schema Version 1.1
    Spatial {"type": "Polygon", "coordinates": -148.297120, 65.030609, -148.297120, 64.711801, -147.635486, 64.711801, -147.635486, 65.030609, -148.297120, 65.030609}

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