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The National Centers for Coastal Ocean Sciences (NCCOS) continued its mission to provide scientific solutions for coral reef ecosystem management through mapping seafloor habitats in marine protected areas. Coordinating with the Coral Reef Conservation Program (CRCP), FKNMS, DRTO, and the state of Florida Coastal Mapping Program, NCCOS conducted a rapid seafloor mapping gap analysis and identified areas that have not been surveyed with modern multibeam sonars or airborne LiDAR. The FKNMS is currently reviewing regulatory and management boundaries in special management zones, while the DRTO had data gaps within the National Park Service (NPS) boundaries between the airborne LiDAR and multibeam coverage. These data gaps inhibited decision making with regards to conserving and managing the shallow and mesophotic coral habitats that support diverse fish communities within the Sanctuary and National Park boundaries. The NOAA Ship Nancy Foster was used to collect high-resolution multibeam seafloor bathymetry, backscatter reflectivity, watercolumn, fish acoustics, and benthic community observations (i.e., video and photographs) using a remotely operated vehicle (ROV).
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:7 0 0 0;"><SPAN><SPAN>This mission was funded by the CRCP. The NOAA Ship Nancy Foster used a Kongsberg EM2040, EM710, and EK60 simultaneously during survey acquisition. The parameters for the EM2040 and the 710 were set to operate in Medium CW and Very Shallow mode respectively. Watercolumn data was logged with the EM2040 only, since there was some interference between the EK60 and the EM710 while the two units were being used simultaneously. The swath angles for both sonars were set to 64 degrees on starboard and port side, unless sea conditions or depth determined a narrower beam swath would improve coverage. Preliminary cross line analysis was used to develop adaptive line plans in Hypack for all multibeam surveys. Multibeam data were processed in near real-time to produce preliminary maps of bathymetry and backscatter.</SPAN></SPAN></P><DIV><DIV><P STYLE="margin:0 0 11 0;"><SPAN /></P></DIV></DIV></DIV>
NOAA/NOS/NCCOS
Attn: Dr. Chris Taylor
101 Pivers Island Road
Beaufort, NC 28516-9722
2021 Tortugas Ecological Reserve North
NOAA
NOS
NCCOS
FKNMS
Florida Keys National Marine Sanctuary
Bottom Habitats Study
United States
Multibeam
Backscatter
Kongsberg EM710
RV Nancy Foster
Seafloor Survey
Sonar
Marine Geology
<DIV STYLE="text-align:Left;"><DIV><DIV><P STYLE="margin:0 0 0 0;"><SPAN>These data are not to be used for navigation. 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></P></DIV></DIV></DIV>
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