tracklines_2010_072_FA.shp: Tracklines of swath bathymetry collected by the U.S. Geological Survey surrounding Muskeget Channel, MA, 2010 (Esri polyline shapefile, Geographic WGS 84)
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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 <http://woodshole.er.usgs.gov/operations/ia/public_ds_info.php?fa=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）的基础海底地形测深（bathymetry）数据，并识别海峡内部及周边区域的地貌变化区域。针对选定区域开展间隔一月的重复测量，以动态监测地形变化。 本次数据采集工作旨在支撑对马斯基特海峡内潮流能转换设施对泥沙输运产生的影响开展评估。 精准的海底地形数据与海图是开展底形迁移（bedform migration）监测、鱼类栖息地评估、海洋资源调查以及分析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海底地形测深数据、声学背散射强度数据、水体声速数据及导航数据。 本次数据采集于2010年10月至2011年11月期间分两次航次开展，搭载平台为‘拉斐尔号’调查船（research vessel, RV Rafael），采用SEA有限公司SwathPlus干涉式声呐（234千赫兹）完成数据采集。 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：<http://woodshole.er.usgs.gov/operations/ia/public_ds_info.php?fa=2010-072-FA>
