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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 18. Sand wave profiles in the study area.

Figure 18. Cross-sectional views of transverse (profiles A and B) and barchanoid (profile C) sand waves from the digital terrain model produced from bathymetric data collected during National Oceanic and Atmospheric Administration survey H12012. Sand-wave asymmetry indicates westward net sediment transport; the presence of megaripples on stoss slopes suggests transport is active. Locations of profiles are shown in figure 13; vertical exaggerations of profiles A, B, and C are 54, 9, and 22, respectively.

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