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2021 Tortugas Ecological Reserve North
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The purpose of the data is to support a Florida Keys National Marine Sanctuary (FKNMS) bottom habitat study. These data are the backscatter component of multibeam data sets for the FKNMS and adjacent areas in the Atlantic Ocean, bounded to the North by the Florida Keys. These data were collected and processed on the NOAA Ship Nancy Foster. All 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).
<DIV STYLE="text-align:Left;"><P STYLE="font-size:16ptmargin:0 0 0 0;"><SPAN><SPAN>This georeferenced image is a 4 meter resolution backscatter mosaic that was collected aboard the NOAA Ship Nancy Foster during the 20-01 mission. Backscatter is the measurement of relative intensity of the seafloor and is used to delineate benthic habitat types (hard vs. soft). The seabed elevation and acoustic imagery data (backscatter) were collected using multibeam echosounders (MBES). The data were processed and corrected for motion, sound speed, and other major artifacts before assessment. 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. High backscatter intensity can indicate coarse sediments or hard surfaces. Low backscatter intensity can indicate softer sediments. </SPAN></SPAN></P><DIV><DIV><P STYLE="margin:0 0 6 0;"><SPAN /></P></DIV></DIV></DIV>
NOAA/NOS/NCCOS
Attn: Dr. Chris Taylor
101 Pivers Island Road
Beaufort, NC 28516-9722
NOAA
NOS
NCCOS
FKNMS
Florida Keys National Marine Sanctuary
Bottom Habitats Study
United States
Multibeam
Backscatter
Kongsberg EM710
Kongsberg EM2040
RV Nancy Foster
Seafloor Survey
Sonar
Marine Geology
<DIV STYLE="text-align:Left;"><DIV><DIV><P STYLE="margin:0 0 6 0;"><SPAN><SPAN>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 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 makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.</SPAN></SPAN></P><P><SPAN /></P></DIV></DIV></DIV>
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