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NCCOS mapping: seafloor mapping products for the Florida Keys National Marine Sanctuary from 2004-01-01 to 2019-09-22 (NCEI Accession 0170215)
This dataset is an inventory of seafloor mapping data from hydrographic multibeam sonar surveys and georeferenced benthic photographs and video clips, all collected in and around the Florida Keys National Marine Sanctuary (FKNMS). The multibeam data sets contain both bathymetric and backscatter data for the FKNMS and adjacent areas in the Atlantic Ocean, bounded to the North by the Florida Keys, and contain detailed surveys of various portions of FKNMS such as the Dry Tortugas and Tortugas Bank areas. Underwater video and photographs for ground validation were acquired during research cruises in the FKNMS. All of these datasets can be visualized online in the 2nd edition of the FKNMS Digital Atlas.
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NCCOS Mapping: Geospatial products of water depth, acoustic backscatter, and ROV data collected from NOAA Ship Nancy Foster in the Dry Tortugas, Florida Keys National Marine Sanctuary from 2021-03-18 to 2021-04-10 (NCEI Accession 0290189)
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Multibeam and acoustic backscatter data collected from NOAA Ship Nancy Foster from 2021-03-18 to 2021-04-10. Data was collected using a Kongsberg EM2040. Bathymetry grids were created using CARIS HIPS and SIPS software, and corrected to Mean Lower Low Water (MLLW). Backscatter mosaics were created using Fledermaus Geocoder Toolbox (FMGT). Data were acquired and processed to meet IHO Order 1 specifications. Survey depths vary from 40m to 190m. Data are available in one and two meter resolutions. During the field mission, a Mohawk 18 Remotely Operated Vehicle (ROV), operated by the University of North Carolina Undersea Vehicles Program collected HD photo and ground validation video. Video data is not included with this dataset.
Acropora Spatial Survey Data of the Upper Florida Keys National Marine Sanctuary, 2005 - 2007 (NCEI Accession 0046934)
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These data were collected by the NOAA Southeast Fisheries Science Center to document the presence or absence of Acropora spp at shallow reef sites in the Upper Florida Keys (USA). The presence or absence of acroporid corals was marked by handheld GPS during snorkel or tow surveys of shallow water (<5m) reef habitats in the Upper Florida Keys National Marine Sanctuary. The data are in GIS shape and layer files with associated attribute files, metadata files, and additional .pdf file outputs of the GIS data layers.
KEYS2016 SM z17 n88g12B classified metadata: Coastal Topography-Upper Florida Keys Reef Tract, Florida, 26-30 June 2016
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Binary point-cloud data were produced for a portion of the upper Florida Keys reef tract, Florida, from remotely sensed, geographically referenced elevation measurements collected by Leading Edge Geomatics (LEG) using a Leica Chiroptera II Bathymetric and Topographic Sensor. Dewberry reports that the nominal pulse spacing for this project was 1 point every 0.7 meters. Dewberry used proprietary procedures to classify the LAS according to project specifications: 0-Never Classified, 1-Unclassified, 2-Ground (includes model key point bit for points identified as Model Key Point), 7-Low Noise, 17-Bridges, 18-High Noise, 40-Bathymetric point or submerged topography (includes model key point bit for points identified as Model Key Point), 41-Water Surface, and 42-Derived water surface.