3-m Bathymetric Grid of National Oceanic and Atmospheric Administration (NOAA) Survey H11079 of Great Round Shoal Channel, Offshore Massachusetts (H11079_UTM_B, UTM Zone 19)

The U.S. Geological Survey (USGS), in cooperation with the National Oceanic and Atmospheric Administration (NOAA) and the Massachusetts Office of Coastal Zone Management (MA CZM), is producing detailed geologic maps of the coastal sea floor. Imagery, originally collected by NOAA for charting purposes, provide a fundamental framework for research and management activities along this part of the Massachusetts coastline, show the composition and terrain of the seabed, and provide information on sediment transport and benthic habitat. Interpretive data layers were derived from multibeam echo-sounder and sidescan sonar data collected in Great Round Shoal Channel, a passage through the shoals at the eastern entrance to Nantucket Sound, off Cape Cod, Massachusetts. In June 2006, bottom photographs and surficial sediment data were acquired as part of a ground-truth reconaissance survey.

美国地质调查局（U.S. Geological Survey，USGS）联合美国国家海洋和大气管理局（National Oceanic and Atmospheric Administration，NOAA）以及马萨诸塞州海岸带管理办公室（Massachusetts Office of Coastal Zone Management，MA CZM），正在编制马萨诸塞州沿岸海域的高精度海底地质图。
由NOAA最初为海图绘制工作采集的影像数据，为该段马萨诸塞州海岸线的科研与管理活动提供了核心基础支撑框架，可清晰呈现海床的物质组成与地形特征，同时提供沉积物运移及底栖生境（benthic habitat）相关的关键信息。
解释性数据图层源自大浅滩航道（Great Round Shoal Channel）区域采集的多波束测深仪（multibeam echo-sounder）与侧扫声呐（sidescan sonar）数据；该航道地处马萨诸塞州科德角外海，为楠塔基特海峡东入口浅滩的通行水道。
2006年6月，作为实地验证踏勘调查的组成部分，研究团队采集了海底照片与表层沉积物数据。