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，正在编制新英格兰南部沿岸海域的详细海底地质图。水深测量数据（Bathymetry）最初由NOAA为海图绘制工作采集，可为新英格兰南部近海的科研与管理活动提供基础支撑框架，能够揭示海底的物质组成与地形特征，并提供沉积物运移及底栖生境相关信息。2008年7月至8月，NOAA在马萨诸塞州盖伊角以西的罗德岛海峡海域完成了编号为H11922的水文测量任务；2010年7月及9月，作为该区域实地验证踏勘调查的一部分，研究团队采集了海底照片与表层沉积物数据。本数据集的解译结果源自多波束测深声呐（multibeam echo-sounder）数据，并通过实地验证数据进行校验。如需了解实地验证调查的更多详细信息，请访问以下链接：http://quashnet.er.usgs.gov/data/2010/10033/ 及 http://quashnet.er.usgs.gov/data/2010/10005/