High Resolution Digital Elevation Model (DEM) of Looe Key, Florida, 2022

Description

A digital elevation model (DEM) was created from underwater images collected at Looe Key (LKR), 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 850x160 meters (m) (0.13 square kilometers [km]) in size and was saved as Geographic Tagged Image File Format (GeoTIFF) rasters at 1-centimeter (cm) resolution, in a 5-by-2 tile index grid. A 1-meter resolution "quicklook" version of this DEM is also included in this data release, so that users can quickly view the entire dataset at a lower resolution before downloading the higher resolution DEM.

Resources

Name Format Description Link
55 Landing page for access to the data https://doi.org/10.5066/P1QRS3SK
55 The metadata original format https://data.usgs.gov/datacatalog/metadata/USGS.ee1f41de-712e-4086-b51e-a60fa7ca7332.xml

Tags

  • spcmsc
  • seabed
  • coral-reefs
  • oceans
  • pacific-coastal-and-marine-science-center
  • visible-light-imaging
  • elevation
  • u-s-geological-survey
  • usgs-ee1f41de-712e-4086-b51e-a60fa7ca7332
  • structure-from-motion
  • geospatial-datasets
  • st-petersburg-coastal-and-marine-science-center
  • pcmsc
  • reef-ecosystems
  • remote-sensing
  • looe-key
  • coastal-and-marine-hazards-and-resources-program
  • usgs
  • physical-habitats-and-geomorphology
  • cmhrp
  • state-of-florida

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