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 http://quashnet.er.usgs.gov/data/2009/09059/

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为航海制图目的采集的水深测量数据与侧扫声呐（sidescan-sonar）图像，为长岛海峡（Long Island Sound）的科研与管理活动提供了基础支撑框架，可直观展现海底的物质组成与地形地貌，并提供沉积物运移及底栖生境（benthic habitat）相关的信息。2008年10月，NOAA完成了纽约州罗基角（Rocky Point）近海的H11251号水文测量作业；2009年11月，作为该区域地面验证勘察调查的组成部分，采集了海底照片与表层沉积物数据。解释性数据图层由多波束回声测深仪（multibeam echo-sounder）与侧扫声呐数据生成，并通过地面验证数据完成校验。如需了解该地面验证调查的更多详情，请访问：http://quashnet.er.usgs.gov/data/2009/09059/