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U.S. Geological Survey Open-File Report 2013–1060

Sea-floor geology and topography offshore in northeastern Long Island Sound

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Title | List of Figures | Conversion Factors | Abstract | Introduction | Setting | Methods | Bathymetry | Sediment Distribution | Bottom Photography | GIS Data Catalog | Summary | Acknowledgments | References | Contacts | Index

Figure 21. A map showing how sand waves in the study area have shifted over time.

Figure 21. Barchanoid sand waves originally surveyed in September–October 2008 during National Oceanic and Atmospheric Administration (NOAA) survey H11997 (open red polygons) and resurveyed in April–May 2009 during NOAA survey H12012 (open blue polygons). Note that the sand waves have shifted toward the west southwest. Location of figure is shown in figure 20.

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