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This image represents a 1x1 meter depth (bathymetry) surface for areas inside Buck Island Reef National Monument (BIRNM). It was collected by NOAA from 4/9/2010 to 4/30/2010 using a pole-mounted 455 kHz Reson Seabat 8125 multibeam echosounder (MBES). Depths between 5 and 50 m were surveyed, producing a 1x1 m bathymetry and 1x1 m backscatter surface. Soundings were positioned relative to the horizontal coordinate system (NAD83 UTM 20 N) and to the vertical coordinate system (MLLW). The bathymetry surface was corrected for sensor offsets, latency, roll, pitch, yaw, static draft, the influence of tides and the changing speed of sound in the water column using CARIS HIPS & SIPS software. This depth image (and derivatives from it) was used to update nautical charts in the area and to develop a new benthic habitat map for BIRNM in 0 to 50 meters of water. |