Color Shaded-Relief GeoTIFF Image Showing the 2-m Bathymetry Generated from National Oceanic and Atmospheric Administration (NOAA) Survey H11996 in Rhode Island Sound (H11996_MB2M_GEO.TIF, 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 along this part of Rhode Island Sound, shows the composition and terrain of the seabed, and provides information on sediment transport and benthic habitat. Interpretations were derived from the multibeam echo-sounder data collected in Rhode Island Sound. During July 2010, bottom photographs and surficial sediment data were acquired as part of a ground-truth reconnaissance survey of these areas. For more information on the ground-truth survey see <http://quashnet.er.usgs.gov/data/2010/10033/>.

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，正在编制罗德岛海域沿岸海床的详细地质图。由NOAA最初为海图绘制工作采集的水深测量数据（bathymetry），可为罗德岛海域沿岸的科研与管理活动提供基础支撑框架，同时能够揭示海床的组成与地形特征，并提供沉积物运移（sediment transport）及底栖生境（benthic habitat）相关信息。本次解译成果均源自在罗德岛海域采集的多波束测深声呐（multibeam echo-sounder）数据。2010年7月，研究团队在针对该区域开展的地面验证（ground-truth）踏勘调查中，同步采集了海底照片与表层沉积物数据。如需了解该地面验证调查的更多详细信息，请访问<http://quashnet.er.usgs.gov/data/2010/10033/>。