Figure 1. Location of the H11997 study area (red polygon) and other bathymetric and backscatter surveys completed in Long Island Sound. Also shown are the locations of onshore end moraines (black polygons). Surveys by the National Oceanic and Atmospheric Administration Ships Thomas Jefferson and Rude are shown in light gray and include H11043—Poppe and others (2004, 2006a); H11044—McMullen and others (2005), Poppe and others (2008a); and H11045—Beaulieu and others (2005); H11255—Poppe and others (2006b); H11250—Poppe and others (2006c, 2007a); H11252/H11361—Poppe and others (2007b, 2008b); H11441/H11442/H11224/H11225—Poppe and others (2010); H11445—McMullen and others (2010); H11251—Poppe and others (2010); and H11446—McMullen and others (2011). Sites of USGS sidescan-sonar surveys are shown in dark gray and include Norwalk—Twichell and others (1997); Milford—Twichell and others (1998); New Haven Harbor and Central Long Island Sound (CLIS) Dumping Grounds—Poppe and others (2001); Roanoke Point—Poppe and others (1999a); Falkner Island—Poppe and others (1999b); Hammonasset—Poppe and others (1997); Niantic Bay—Poppe and others (1998c); New London—Lewis and others (1998), Zajac and others (2000, 2003); Fishers Island Sound—Poppe and others (1998b). Click here for a larger version of image.