GPS NAVIGATION: Text Files of the GPS Navigation Logged with an ASHTECH G12 Sensor During OSV Bold Cruise 2010-015-FA of May 24 to May 28, 2010

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 H11997 offshore in eastern Long Island Sound, and during May 2010 bottom photographs and surficial sediment data were acquired as part of a ground-truth reconnaissance survey 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 survey see http://quashnet.er.usgs.gov/data/2010/10015/

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，正编制沿海海底的详细地质图。最初由NOAA为海图绘制工作采集的水深测量数据与侧扫声呐图像，不仅为长岛海峡的科研与管理活动提供了基础支撑框架，还可揭示海床的组成与地形特征，并提供沉积物运移以及底栖栖息地相关的信息。2008年10月，NOAA完成了长岛海峡东部近海的水文测量任务H11997；2010年5月，作为该区域地面验证勘察调查的一部分，采集了海底照片与表层沉积物数据。研究人员从多波束测深仪数据中生成了两个解释性数据图层，并利用地面验证数据对其进行了验证。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/2010/10015/