H11044N_10GEO: 10-m Interpolated Bathymetric Grid of the Northern Part of National Oceanic and Atmospheric Administration (NOAA) Survey H11044 off Milford, Connecticut (Geographic)

During 2001 the NOAA Ship RUDE completed charting survey H11044 that covered a roughly 293 km2 area of the sea floor in north-central Long Island Sound, off Milford Connecticut. Although 100 percent coverage was achieved with sidescan sonar for charting purposes, only reconnaissance (spaced line) bathymetry was acquired with shallow-water multibeam and single-beam systems. Therefore, further processing was conducted at the USGS's Woods Hole Science Center to provide bathymetric datasets with more continuous coverage. This project produced grids and GeoTIFF imagery of the combined and interpolated shallow-water multibeam and single-beam bathymetry generated from the northern part of this data set.
Anthropogenic wastes, toxic chemicals, and changes in land-use patterns resulting from residential, commercial, and recreational development have stressed the environment of the Sound, causing degradation and potential loss of benthic habitats. Detailed maps of the sea floor are needed to help evaluate the extent of adverse impacts and to help manage resources wisely in the future. Therefore, in a continuing effort to better understand Long Island Sound, we have interpolated and gridded shallow-water multibeam and single-beam bathymetric data within specific areas of special interest.

2001年，美国国家海洋和大气管理局（National Oceanic and Atmospheric Administration, NOAA）的“鲁德号”科考船完成了编号为H11044的海图测绘作业，作业覆盖康涅狄格州米尔福德港外、长岛湾中北部约293平方公里的海底区域。尽管为达成海图测绘目标，侧扫声呐已实现100%区域覆盖，但仅利用浅水多波束与单波束测深系统获取了侦察级间隔测线水深测量数据。为此，美国地质调查局（United States Geological Survey, USGS）伍兹霍尔科学中心开展了后续处理工作，以生成覆盖连续性更优的水深数据集。本项目针对该数据集北部区域的浅水多波束与单波束水深数据进行合并与插值处理，最终生成了栅格数据集与GeoTIFF格式影像。

人为废弃物、有毒化学品，以及住宅、商业与休闲开发引发的土地利用模式变更，已对长岛湾的生态环境造成多重胁迫，导致底栖生境退化甚至潜在丧失。当前亟需高精度海底地图以辅助评估不利影响的波及范围，并助力未来开展审慎合理的资源管理。因此，为持续深化对长岛湾生态系统的认知，我们针对特定重点关注区域内的浅水多波束与单波束水深数据完成了插值与栅格化处理。