ESRI Binary 2-m Bathymetric Grid of National Oceanic and Atmospheric Administration (NOAA) Survey H11999 in Long Island Sound, North of Duck Pond Point, New York (H11999_2M_UTM, UTM Zone 18, NAD83)

The U.S. Geological Survey (USGS), in cooperation with the Connecticut Department of Environmental Protection and National Oceanic and Atmospheric Administration (NOAA), is producing detailed geologic maps of the coastal sea floor. Imagery, originally collected by NOAA for charting purposes, provides a fundamental framework for research and management activities along this part of Long Island Sound, shows the composition and terrain of the seabed, and provides information on sediment transport and benthic habitat. Interpretive data layers were derived from the multibeam echo-sounder data collected north of Duck Pond Point, New York. During April and May 2010, bottom photographs and surficial sediment data were acquired during 2 cruises as part of USGS ground-truth reconnaissance surveys of this area. For more information on the ground-truth surveys see <http://quashnet.er.usgs.gov/data/2010/10010/> and <http://quashnet.er.usgs.gov/data/2010/10015/>.美国地质调查局（U.S. Geological Survey, USGS）联合康涅狄格州环境保护部与美国国家海洋和大气管理局（National Oceanic and Atmospheric Administration, NOAA），正在编制长岛海峡（Long Island Sound）沿岸海域的详细海底地质图。由NOAA为海图绘制工作采集的原始影像资料，为长岛海峡沿岸的科研与管理活动提供了核心基础支撑框架，可清晰展示海床的物质组成与地形特征，同时提供沉积物运移及底栖生境相关信息。解释性数据图层源自纽约州达克庞特（Duck Pond Point）以北采集的多波束测深声呐（multibeam echo-sounder）数据。2010年4月至5月期间，研究团队在两次科考航行中采集了海底照片与表层沉积物数据，作为美国地质调查局针对该区域开展的实地验证踏勘调查的组成部分。如需了解实地验证调查的更多详情，请访问以下链接：<http://quashnet.er.usgs.gov/data/2010/10010/> 及 <http://quashnet.er.usgs.gov/data/2010/10015/>。