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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 18. Image of sidescan sonar from the northeastern part of the study area.

Figure 18. Detailed sidescan-sonar image of scour depressions and erosional outliers to the west of the Point Judith Harbor entrance. Currents related to the protective jetty extending from the harbor may influence the unusual east-west orientations of these sea-floor features relative to others in the study area, which predominately trend north-south. Broad, low-relief bedforms with coarser troughs and finer crests are in the lower left. Stripes oriented along survey tracklines are artifacts of the data acquisition and processing. Location shown in figure 12.


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