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U.S. Geological Survey Open-File Report 2013–1003

Sea-Floor Geology in Northeastern Block Island Sound, Rhode Island


Skip past contents information Title | List of Figures | Conversion Factors | Abstract | Introduction | Setting | Methods | Bathymetry | Sidescan Sonar | Sediments | Bottom Photography | GIS Data Catalog | Summary | Acknowledgments | References | Contacts | Index


Figure 16. Image of the sidescan sonar collected in the study area.

Figure 16. Image of sidescan-sonar data from National Oceanic and Atmospheric Administration (NOAA) survey H12023. Dark-shades are low backscatter and generally represent finer grained sediments and acoustic shadows; light-shades are high backscatter and generally represent coarser grained sediment and high acoustic reflectivity. Note that sidescan-sonar data were not collected in the entire survey area; stripes oriented along survey tracklines are artifacts of the data acquisition and processing and were not tonally matched.


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