2-m Bathymetric Grid of National Oceanic and Atmospheric Administration (NOAA) Survey H11251 Offshore of Rocky Point, New York (H11251_2M_GEO, Geographic, WGS84)

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. Bathymetry and sidescan-sonar imagery, originally collected by NOAA for charting purposes, provides 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 October 2008 NOAA completed hydrographic survey H11251 offshore of Rocky Point, New York and during November 2009, bottom photographs and surficial sediment data were acquired as part of a ground-truth reconnaissance survey of this area. Interpretive data layers were derived from the multibeam echo-sounder and sidescan-sonar data and the ground-truth data used to verify them. For more information on the ground-truth survey see https://cmgds.marine.usgs.gov/fan_info.php?fan=2009-059-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，正在编制沿海海底详细地质图。最初由NOAA为海图绘制工作采集的水深测量（bathymetry）与侧扫声呐图像（sidescan-sonar imagery），为长岛湾（Long Island Sound）内的科研与管理活动提供了核心基础框架，可直观揭示海底的物质组成与地形特征，同时能够提供沉积物运移及底栖栖息地（benthic habitat）相关的关键信息。2008年10月，NOAA完成了纽约州洛基点近海的水文测量（hydrographic survey）项目H11251；2009年11月，作为该区域地面验证（ground-truth）踏勘调查的组成部分，研究团队采集了海底照片与表层沉积物数据。本次研究生成的解释性数据图层（interpretive data layers）源自多波束测深仪（multibeam echo-sounder）与侧扫声呐数据，并通过前述地面验证数据完成了准确性校验。如需了解该地面验证调查的更多详情，请访问：https://cmgds.marine.usgs.gov/fan_info.php?fan=2009-059-FA