2-m Bathymetric Grid of National Oceanic and Atmospheric Administration (NOAA) Survey H11922 in Rhode Island Sound West of Gay Head, Massachusetts (H11922_2M_GEO, Geographic, WGS84)

The U.S. Geological Survey (USGS), in cooperation with the National Oceanic and Atmospheric Administration (NOAA), is producing detailed geologic maps of the coastal sea floor. Bathymetry, originally collected by NOAA for charting purposes, provides a fundamental framework for research and management activities off southern New England, shows the composition and terrain of the seabed, and provides information on sediment transport and benthic habitat. During July-August 2008 NOAA completed hydrographic survey H11922 west of Gay Head, Massachusetts, in Rhode Island Sound and during July and September 2010 bottom photographs and surficial sediment data were acquired as part of ground-truth reconnaissance surveys of this area. Interpretations were derived from the multibeam echo-sounder data and the ground-truth data used to verify them. For more information on the ground-truth surveys see http://quashnet.er.usgs.gov/data/2010/10033/ and http://quashnet.er.usgs.gov/data/2010/10005/

美国地质调查局（U.S. Geological Survey, USGS）与美国国家海洋和大气管理局（National Oceanic and Atmospheric Administration, NOAA）合作，正在绘制新英格兰南部近岸海底的详细地质图。原本由NOAA为海图绘制工作采集的水深测量（Bathymetry）数据，可为该区域的近海科研与管理活动提供基础框架，其能够反映海底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）相关信息。2008年7月至8月期间，NOAA在马萨诸塞州盖德角以西、罗德岛湾海域完成了编号为H11922的水文测量任务；2010年7月及9月，研究团队作为该区域地面验证勘察调查的一部分，采集了海底原位摄影数据与表层沉积物数据。本次数据集的解译成果源自多波束回声测深仪（multibeam echo-sounder）数据与用于验证该解译结果的地面实测数据。如需了解地面验证调查的更多详情，请访问以下链接：http://quashnet.er.usgs.gov/data/2010/10033/ 与 http://quashnet.er.usgs.gov/data/2010/10005/