Interpolated 5-m bathymetric grid of NOAA survey H11044 off Milford, Connecticut (H11044_BATHY5)

The U.S. Geological Survey, in cooperation with the National Oceanic and Atmospheric Administration and the Connecticut Department of Environmental Protection, has produced detailed geologic maps of the sea floor in Long Island Sound, a major East Coast estuary surrounded by the most densely populated region of the United States. These studies have built upon cooperative research with the State of Connecticut that was initiated in 1982. The current phase of this research program is directed toward studies of sea-floor sediment distribution, processes that control sediment distribution, nearshore environmental concerns, and the relation of benthic community structures to the sea-floor geology.
The bathymetry data in this data set were collected during 2001 for charting applications as part of NOAA project OPR-B340-RU, survey H11044 aboard the NOAA Ship RUDE. The RUDE, which supports NOAA's east-coast nautical charting mission, is outfitted to acquire single-beam bathymetry with an Odom Echotrac DF-3200 duel frequency echosounder and shallow water multibeam bathymetry with a Reson 8125 system. The Reson multibeam system operates at 455 KHz with a 120 degree across track swath and 240 beams along its swath.

美国地质调查局（U.S. Geological Survey）与美国国家海洋和大气管理局（National Oceanic and Atmospheric Administration，NOAA）以及康涅狄格州环境保护部（Connecticut Department of Environmental Protection）合作，完成了长岛海峡海底的详细地质填图。长岛海峡作为美国东海岸的重要河口湾，周边为美国人口最密集的区域。本系列研究依托1982年启动的与康涅狄格州的合作研究项目开展。当前本研究计划的阶段目标聚焦于海底沉积物分布、调控沉积物分布的过程、近岸环境相关议题，以及底栖生物群落结构与海底地质间的关联。
本数据集包含的水深地形数据采集于2001年，用于海图绘制应用，是NOAA项目OPR-B340-RU的组成部分，由NOAA RUDE号科考船执行测量任务H11044期间获取。RUDE号承担NOAA东海岸航海海图绘制任务，其配备的设备包括：用于获取单波束水深地形数据的Odom Echotrac DF-3200双频回声测深仪，以及用于获取浅水区多波束水深地形数据的Reson 8125系统。Reson多波束系统工作频率为455千赫兹，沿航迹垂直方向的条带宽度达120度，单条带内包含240个波束。