Combined 2-m and Interpolated 10-m Bathymetric Grid of National Oceanic and Atmospheric Administration (NOAA) Survey H12013 Off the Entrance to the Connecticut River in Northeastern Long Island Sound (H12013_INTUTM, UTM Zone 18, NAD83)

The U.S. Geological Survey (USGS), in cooperation with the National Oceanic and Atmospheric Administration (NOAA) and the Connecticut Department of Energy and Environmental Protection (CT DEEP), is producing detailed geologic maps of the coastal sea floor. Bathymetry and sidescan-sonar imagery, originally collected by NOAA for charting purposes, provide a fundamental framework for research and management activities in Long Island Sound, shows the composition and terrain of the seabed, and provides information on sediment transport and benthic habitat. During April-May 2009 NOAA completed hydrographic survey H12013 offshore of the entrance to the Connecticut River, and during November 2009 and April 2010 bottom photographs and surficial sediment data were acquired as part of two ground-truth reconnaissance surveys of this area. Two interpretive data layers were derived from the multibeam echo-sounder and the ground-truth data used to verify them. For more information on the ground-truth surveys see: http://woodshole.er.usgs.gov/operations/ia/public_ds_info.php?fa=2009-059-FA and http://woodshole.er.usgs.gov/operations/ia/public_ds_info.php?fa=2010-010-FA

美国地质调查局（U.S. Geological Survey，简称USGS）与美国国家海洋和大气管理局（National Oceanic and Atmospheric Administration，简称NOAA）、康涅狄格州能源与环境保护部（Connecticut Department of Energy and Environmental Protection，简称CT DEEP）合作，正在编制长岛海峡沿岸海底的详细地质图。由NOAA最初为海图绘制工作采集的水深测量（Bathymetry）数据与侧扫声呐图像（sidescan-sonar imagery），为长岛海峡的科研与管理活动提供了核心基础框架，可直观呈现海床的组成与地形特征，并提供沉积物运移及底栖生境相关的重要信息。2009年4月至5月，NOAA完成了康涅狄格河入海口外海域的水文测量项目H12013；2009年11月与2010年4月，研究团队针对该区域开展两项地面验证踏勘调查，采集了海底照片与表层沉积物数据。研究人员基于多波束测深仪（multibeam echo-sounder）采集的数据，以及用于验证上述图层的地面实测数据，生成了两个解释性数据图层。如需了解地面验证调查的更多详情，请访问以下链接：http://woodshole.er.usgs.gov/operations/ia/public_ds_info.php?fa=2009-059-FA 与 http://woodshole.er.usgs.gov/operations/ia/public_ds_info.php?fa=2010-010-FA