Esri Binary 2-m Bathymetric Grid of National Oceanic and Atmospheric Administration (NOAA) Survey H12023 in Block Island Sound (H12023_2M_UTM, UTM Zone 19, NAD83)

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，正在编制沿海海底的详细地质图。最初由NOAA为海图绘制目的采集的水深测量（Bathymetric）与侧扫声呐（sidescan-sonar）数据，可为布洛克岛海峡（Block Island Sound）这片区域的科研与管理活动提供基础框架，同时揭示海底的组成与地形，并提供沉积物运移及底栖生境（benthic habitat）的相关信息。2012年6月期间，作为该区域地面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。本次解译成果源自在布洛克岛海峡采集的多波束测深仪（multibeam-echosounder）、侧扫声呐、沉积物及摄影数据。如需了解该地面验证调查的更多信息，请访问<http://woodshole.er.usgs.gov/operations/ia/public_ds_info.php?fa=2012-002-FA>。