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    • Digital Elevation Model (DEM) of Summerland Ledge, Florida, 2022

    Metadata Updated: January 22, 2026

    A digital elevation model (DEM) was created from underwater images collected at Summerland Ledge (SL), Florida, in July 2022 using the SfM (Structure-from-Motion) Quantitative Underwater Imaging Device with 5 cameras (SQUID-5) system. The underwater images were processed using SfM photogrammetry techniques into a classified two-class ('unclassified' and 'low noise') 3D point cloud. The DEM was created in Metashape (ver. 1.6.6) from the point cloud and includes points from both classes. The DEM covers a rectangular area of seafloor approximately 450x180 meters (m) (0.081 square kilometers [km]) in size and was saved as a Geographic Tagged Image File Format (GeoTIFF) raster at 1-centimeter (cm) resolution.

    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 22, 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 22, 2026
    Publisher U.S. Geological Survey
    Maintainer
    Identifier http://datainventory.doi.gov/id/dataset/USGS_b3530dbb-acab-46f3-bb56-9537d4484201
    Data Last Modified 2024-08-09T00:00:00Z
    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 20260122085604
    Harvest Object Id db5be4c3-8c98-4bff-8cff-bbfce5a362c6
    Harvest Source Id 2b80d118-ab3a-48ba-bd93-996bbacefac2
    Harvest Source Title DOI USGS DCAT-US
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": -81.44786086, 24.53903098, -81.44786086, 24.54175894, -81.44153260, 24.54175894, -81.44153260, 24.53903098, -81.44786086, 24.53903098}
    Source Datajson Identifier True
    Source Hash 60c08b1c90191d82228a244bcf7f3f5f38a051e70c79a177927216ed0ea9e0f1
    Source Schema Version 1.1
    Spatial {"type": "Polygon", "coordinates": -81.44786086, 24.53903098, -81.44786086, 24.54175894, -81.44153260, 24.54175894, -81.44153260, 24.53903098, -81.44786086, 24.53903098}

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