Interpretations of the Surficial Geology from National Oceanic and Atmospheric Administration (NOAA) Survey H11079 of Great Round Shoal Channel, MA (H11079_SURFGEOL.SHP, Geographic)

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 reconnaissance 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），正在编制沿岸海底详细地质图。最初由NOAA为海图绘制工作采集的影像数据，可为马萨诸塞州该段海岸线的科研与管理活动提供基础框架，既能展示海底的物质组成与地形特征，还可提供沉积物运移及底栖生境相关信息。解译数据图层源自采集于大圆浅滩水道的多波束测深仪（multibeam echo-sounder）与侧扫声呐（sidescan sonar）数据；该水道位于马萨诸塞州科德角外海，是连通楠塔基特海峡东入口浅滩的航道。2006年6月，作为地面验证踏勘调查的一部分，项目组采集了海底照片与表层沉积物数据。