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U.S. Geological Survey Open-File Report 2010–1100

Surficial Geology of the Sea Floor in Long Island Sound Offshore of Orient Point, New York

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

Figure 18. A sidescan sonar image of boulders and scour in the study area.

Figure 18. Detailed sidescan-sonar image of boulders with scour marks at the eastern end of the study area. Scour depressions to the east of the boulders indicate net eastward bottom currents; higher backscatter in the depressions indicates the presence of coarser grained sediments. Dark stripes in the middle of sonar lines are nadir gaps. Location of image shown in figure 17.

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