Tracklines of swath bathymetry collected by the U.S. Geological Survey surrounding Muskeget Channel, MA, 2010 (Esri polyline shapefile, Geographic WGS 84, tracklines_2010_072_FA.shp)

These data were collected in a collaboration between the Woods Hole Oceanographic Institution and the U.S. Geological Survey (USGS). The primary objective of this program was to collect baseline bathymetry for Muskeget Channel, Massachusetts, and identify areas of morphologic change within and around the channel. Repeat surveys in select areas were collected one month apart to monitor change. These data were collected to support an assessment of the effect on sediment transport that a tidal instream energy conversion facility would have within Muskeget Channel. Accurate data and maps of sea-floor topography are important first steps in monitoring bedform migration, fish habitat, marine resources, and environmental changes due to natural or human impacts. The data include high-resolution bathymetry, acoustic-backscatter intensity, sound velocity in water, and navigation data. These data were collected during two surveys between October 2010 and November 2011 onboard the research vessel (RV) Rafael using an SEA Ltd. SwathPlus interferometric sonar (234 kilohertz). More information about the cruise can be found on the Woods Hole Coastal and Marine Science Center field activity Web page at https://cmgds.marine.usgs.gov/fan_info.php?fan=2010-072-FA.本数据集由伍兹霍尔海洋研究所（Woods Hole Oceanographic Institution）与美国地质调查局（U.S. Geological Survey, USGS）合作采集。本项目的核心目标为采集马萨诸塞州马斯基特海峡（Muskeget Channel）的基准水深测量（bathymetry）数据，并识别海峡内部及周边的地貌变化区域。针对选定区域开展间隔一个月的重复测量，以监测地貌变化情况。本次数据采集旨在支撑针对马斯基特海峡内潮流能转换设施对泥沙运移影响的评估工作。精准的海底地形数据与地图是监测底形迁移、鱼类栖息地、海洋资源以及自然或人为活动引发的环境变化的首要基础步骤。本数据集包含高分辨率水深测量数据、声学反向散射强度（acoustic-backscatter intensity）数据、水体声速数据以及导航数据。本数据集于2010年10月至2011年11月期间，通过两次勘测采集完成，勘测搭载于“拉斐尔号”研究船（RV Rafael），使用SEA有限公司生产的SwathPlus干涉式测深声呐（interferometric sonar, 234千赫兹）。有关本次航次的更多信息，可访问伍兹霍尔海岸与海洋科学中心野外活动网页：https://cmgds.marine.usgs.gov/fan_info.php?fan=2010-072-FA。