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Spatial Extent of Data

USGS Data Source

USGS Thesaurus Keywords

structure from motion, reef ecosystems, remote sensing, visible light imaging, geospatial datasets

ISO 19115 Topic Category

elevation, oceans

Other Subject Keywords

Pacific Coastal and Marine Science Center, Physical Habitats and Geomorphology, SPCMSC, St. Petersburg Coastal and Marine Science Center, seabed, coral reefs, CMHRP, USGS, Coastal and Marine Hazards and Resources Program, U.S. Geological Survey, PCMSC

Place Keywords

Looe Key, State of Florida

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

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.

Get Data and Metadata
Author(s) Christine Kranenburg orcid, Gerald Hatcher orcid, David G Zawada orcid, Jonathan Warrick orcid, Kimberly K Yates orcid, Selena A. Johnson
Publication Date 2024-06-28
Beginning Date of Data 2022-07-12
Ending Date of Data 2022-07-16
Data Contact
SPCMSC Data Management Group
DOI https://doi.org/10.5066/P1QRS3SK
Citation Kranenburg, C., Hatcher, G., Zawada, D.G., Warrick, J., Yates, K.K., and Johnson, S.A., 2024, High Resolution Digital Elevation Model (DEM) of Looe Key, Florida, 2022: U.S. Geological Survey data release, https://doi.org/10.5066/P1QRS3SK.
Metadata Contact
SPCMSC Data Management Group
Metadata Date 2024-08-14
Related Publication
Citations of these data No citations of these data are known at this time.
Access public
License http://www.usa.gov/publicdomain/label/1.0/
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Harvest Source: Coastal and Marine Geoscience Data System
Harvest Date: 2025-04-08T05:54:19.357Z