Figure 27. Cross-sectional views of sand waves produced from the bathymetric data collected during National Oceanic and Atmospheric Administration survey H12007 from the crest (profile C) and across the western flanks of the extension of Cross Rip Shoal (profile D) and Halfmoon Shoal (profile E). The megaripples in profile C are predominantly symmetrical, but bedform asymmetry and slip-face orientation (Reineck and Singh, 1980) in profiles D and E indicate net eastward sediment transport. Locations of profiles are shown in figure 19.