Color Shaded-Relief GeoTIFF Image Showing the 2-m Bathymetry Generated from National Oceanic and Atmospheric Administration (NOAA) Survey H12296 in Block Island Sound (H12296_MB2M_UTM.TIF, UTM Zone 19, NAD 83)

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. Bathymetric and sidescan-sonar data, originally collected by NOAA for charting purposes, provide a fundamental framework for research and management activities along this part of Block Island Sound, show the composition and terrain of the seabed, and provide information on sediment transport and benthic habitat. During June 2012, bottom photographs and surficial sediment data were acquired as part of a ground-truth reconnaissance survey of this area. Interpretations were derived from the multibeam-echosounder, sidescan-sonar, sedimentary, and photographic data collected in Block Island Sound. For more information on the ground-truth survey see <http://woodshole.er.usgs.gov/operations/ia/public_ds_info.php?fa=2012-002-FA>.

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，正开展沿岸海床详细地质图的编制工作，覆盖范围涵盖布洛克岛湾（Block Island Sound）的部分海域。由NOAA最初为海图绘制工作采集的水深测量与侧扫声呐数据，为该区域的科研与管理活动提供了基础框架，可反映海床的物质组成与地形特征，同时可为沉积物运移及底栖生境相关研究提供信息支撑。2012年6月期间，作为该区域实地验证踏勘调查的一部分，本次调查采集了海底照片与表层沉积物数据。本次解译成果基于在布洛克岛湾采集的多波束测深仪、侧扫声呐、沉积物及摄影数据。如需了解本次实地验证调查的更多详情，请访问<http://woodshole.er.usgs.gov/operations/ia/public_ds_info.php?fa=2012-002-FA>。