Interpretation of Sedimentary Environments from National Oceanic and Atmospheric Administration (NOAA) Survey H12013 Off the Mouth of the Connecticut River in Eastern Long Island Sound (H12013_SEDENV.SHP, Geographic, WGS84)

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, USGS）联合美国国家海洋和大气管理局（National Oceanic and Atmospheric Administration, NOAA）以及康涅狄格州能源与环境保护部（Connecticut Department of Energy and Environmental Protection, CT DEEP），正开展长岛海峡（Long Island Sound）沿海海底的详细地质图编制工作。由NOAA最初为海图绘制所采集的水深测量数据（bathymetry）与侧扫声呐影像（sidescan-sonar imagery），可为长岛海峡的科研与管理活动提供基础支撑框架，同时揭示海底底质组成与地形特征，并提供沉积物运移及底栖生境（benthic habitat）相关信息。2009年4月至5月，NOAA完成了康涅狄格河入海口外侧的水文测量（hydrographic survey）任务H12013；2009年11月及2010年4月，项目团队针对该区域开展两次地面验证（ground-truth）踏勘调查，采集了海底照片与表层沉积物数据。研究人员从多波束回声测深仪（multibeam echo-sounder）数据及用于验证该数据的地面验证资料中，衍生出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：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