RoxAnn transect lines in Rehoboth Bay, Delaware. Orange areas are unconsolidated sediments and green areas are macroalgae.
The NOAA Coastal Services Center's single-beam acoustic benthic habitat data were developed using the RoxAnn seabed classification instrument. Multiple echo returns were analyzed for bottom hardness and roughness. These parameters were used, along with calibration information, to classify the substrate and identify biological communities. Single-beam acoustic data are often used to examine transition zones between habitats or in areas too turbid and shallow for other technologies. A non-tidally corrected depth was also recorded.