{ "culture": "en-US", "name": "", "guid": "", "catalogPath": "", "snippet": "The purpose of the data is to support Florida Keys National Marine Sanctuary (FKNMS) benthic habitat mapping and research planning efforts for improved spatial and fishery ecosystem manabement. The data consists of multibeam data sets that contain bathymetric and in some areas backscatter data. The data in this segment were collected on the NOAA RVs Thomas Jefferson and Nancy Foster between 2004 and 2018. \n\nAll data products produced are supplied as ready to use products for a Geographic Information System (GIS) and CARIS, projected in Universal Transverse Mercator (UTM) 17 N, North American Datum 1983 (NAD83) and vertically reduced to Mean Lower Low Water (MLLW).", "description": "

This georeferenced image is a 5 meter resolution backscatter mosaic that was collected aboard the NOAA research vessels Nancy Foster and Thomas Jefferson during cruises from 2004 to 2018. Backscatter is the measurment of relative intensity of the seafloor and is used to delineate bentic habitat types (hard vs. soft). The seabed elevation and acoustic imagery data (backscatter) were collected using multibeam echosounders (MBES). The data were preliminary processed and corrected for motion, sound speed, and other major artifacts before assessment by Geodynamics. However, the data were only semi-cleaned, contained various artifacts, and converted with the real-time tide. Therefore, Geodynamics was contracted to complete a full review of the data and apply a NOAA Tide Zone Definition File (ZDF) to permit CCFHR\u2019s later use of the data for characterizing Florida Keys National Marine Sanctuary (FKNMS) and adjacent areas bottom habitats. The corrected bathymetry base surface will be used to interpret the seafloor topography habitat types and extend the range of existing habitat map products that were created by manual interpretation of satellite imagery. The acoustic imagery (backscatter) aspect of the data will help further this interpretation. However, Geodynamics was not responsible for processing backscatter data but were responsible to ready the backscatter data for eventual processing.<\/SPAN><\/P><\/DIV><\/DIV><\/DIV>", "summary": "The purpose of the data is to support Florida Keys National Marine Sanctuary (FKNMS) benthic habitat mapping and research planning efforts for improved spatial and fishery ecosystem manabement. The data consists of multibeam data sets that contain bathymetric and in some areas backscatter data. The data in this segment were collected on the NOAA RVs Thomas Jefferson and Nancy Foster between 2004 and 2018. \n\nAll data products produced are supplied as ready to use products for a Geographic Information System (GIS) and CARIS, projected in Universal Transverse Mercator (UTM) 17 N, North American Datum 1983 (NAD83) and vertically reduced to Mean Lower Low Water (MLLW).", "title": "TN_TS_BS", "tags": [ "NOAA", "NOS", "NCCOS", "CCFHR", "Geodynamics", "Florida Keys National Marine Sanctuary", "Bottom Habitats Study", "United States", "Multibeam", "Backscatter", "Kongsberg 1002", "Kongsberg 3000", "Kongsberg 710", "Reson 7125", "RV Nancy Foster", "RV Thomas Jefferson", "Seafloor Survey", "Sonar", "Marine Geology" ], "type": "", "typeKeywords": [], "thumbnail": "", "url": "", "minScale": 150000000, "maxScale": 5000, "spatialReference": "", "accessInformation": "NOAA/NOS/NCCOS\nAttn: Dr. Chris Taylor\n101 Pivers Island Road\nBeaufort, NC 28516-9722\n\nGeodynamics, LLC. \n310-A Greenfield Drive\nNewport, North Carolina 28570", "licenseInfo": "

While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA and Geodynamics cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA and Geodynamics makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.<\/SPAN><\/P><\/DIV><\/DIV><\/DIV>" }