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Layer: 2018 North Marquesas (ID: 373)

Parent Layer: Backscatter – Seafloor Reflectivity

Name: 2018 North Marquesas

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Type: Raster Layer

Geometry Type: null

Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN><SPAN>This georeferenced image is a 4 meter resolution backscatter mosaic that were collected by eTrac Inc., under contract to NOAA/OCS in 2018. 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></DIV>

Copyright Text: NOAA/NOS/NCCOS Attn: Dr. Chris Taylor 101 Pivers Island Road Beaufort, NC 28516-9722 eTrac Inc. 637 Lindaro Street Suite 100 San Rafael, CA 94901

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Supported Query Formats: JSON, geoJSON, PBF

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Supported Operations:   Query   Query Attachments   Query Analytic   Generate Renderer   Return Updates

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