Enhanced Grayscale TIFF Image of the 1-m Sidescan-Sonar Data From National Oceanic and Atmospheric Administration (NOAA) Survey H11251 Offshore of Rocky Point, New York (H11251_1MSSS_UTM18.TIF, UTM Zone 18, NAD83)

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为海图绘制目的采集的水深测量（Bathymetry）数据与侧扫声呐图像（sidescan-sonar imagery），为长岛海峡（Long Island Sound）的科研与管理活动提供了基础框架，可揭示海底的组成与地形，并提供沉积物运移（sediment transport）及底栖生境（benthic habitat）相关信息。2008年10月，NOAA完成了纽约州洛基角近海的水文测量（hydrographic survey）任务H11251；2009年11月，作为该区域地面验证（ground-truth）勘察调查的一部分，采集了海底照片（bottom photographs）与表层沉积物数据（surficial sediment data）。解释性数据图层（interpretive data layers）由多波束测深声呐（multibeam echo-sounder）与侧扫声呐数据衍生而来，并通过地面验证数据完成校核。如需了解该地面验证调查的更多信息，请访问http://quashnet.er.usgs.gov/data/2009/09059/