Location of Sea-Floor Photographs Acquired During U.S. Geological Survey (USGS) Cruise 2012-002-FA in Block Island Sound (2012-002_023BOTPHOTOS shapefile, Geographic)

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. Bathymetric and sidescan-sonar data, originally collected by NOAA for charting purposes, provide a fundamental framework for research and management activities along this part of Block Island Sound, show the composition and terrain of the seabed, and provide information on sediment transport and benthic habitat. During June 2012, bottom photographs and surficial sediment data were acquired as part of a ground-truth reconnaissance survey of this area. Interpretations were derived from the multibeam-echosounder, sidescan-sonar, sedimentary, and photographic data collected in Block Island Sound. For more information on the ground-truth survey see <http://woodshole.er.usgs.gov/operations/ia/public_ds_info.php?fa=2012-002-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，正在绘制沿海海底的详细地质图。最初由NOAA为海图编制工作采集的测深与侧扫声呐数据，可为布洛克岛海峡该区域的科研与管理活动提供基础框架，同时揭示海底的组成与地形特征，并提供沉积物运移及底栖生境相关信息。2012年6月，作为该区域地面验证踏勘调查的组成部分，研究团队采集了海底摄影照片与表层沉积物数据。本次数据集的解译成果源自布洛克岛海峡采集的多波束测深仪、侧扫声呐、沉积物学及摄影数据。如需了解该地面验证调查的更多信息，请访问<http://woodshole.er.usgs.gov/operations/ia/public_ds_info.php?fa=2012-002-FA>。