All_contour5m.shp - interpolated swath bathymetry contours collected by the U.S. Geological Survey surrounding the nearshore of the Elizabeth Islands and sand shoals of Vineyard Sound, MA, 2007-2011 (Esri polyline shapefile, Geographic, WGS 84)

These data were collected under a cooperative agreement between the Massachusetts Office of Coastal Zone Management (CZM) and the U.S. Geological Survey (USGS), Coastal and Marine Geology Program, Woods Hole Coastal and Marine Science Center (WHCMSC). Initiated in 2003, the primary objective of this program is to develop regional geologic framework information for the management of coastal and marine resources. Accurate data and maps of seafloor geology are important first steps toward protecting fish habitat, delineating marine resources, and assessing environmental changes due to natural or human impacts. The project is focused on the inshore waters of coastal Massachusetts, primarily in water depths of 2-30 meters. Data collected for the mapping cooperative have been released in a series of USGS Open-File Reports (<http://woodshole.er.usgs.gov/project-pages/coastal_mass/html/current_map.html>). The data collected in this study area are located in both Buzzards Bay and Vineyard Sound and are primarily in the shallow water areas around the eastern Elizabeth Islands and Martha's Vineyard, Massachusetts. The data include high resolution bathymetry, acoustic-backscatter intensity, sound velocity in water, seismic-reflection profiles, and navigation data. These data were collected during several cruises between 2007 and 2011 onboard the R/V Rafael using the following equipment: an SEA Ltd SwathPlus interferometric sonar (234 kHz), Klein 3000 dual frequency sidescan sonar, a boomer source and Geometrics 8-channel GeoEel streamer, a Knudsen 3200 subbottom profiling system, and 4 GPS antennae. More information about the cruises conducted as part of the project: Geologic Mapping of the Seafloor Offshore of Massachusetts can be found on the Woods Hole Coastal and Marine Science Center Field Activity webpages: <http://woodshole.er.usgs.gov/operations/ia/public_ds_info.php?fa=2011-013-FA> <http://woodshole.er.usgs.gov/operations/ia/public_ds_info.php?fa=2009-068-FA> <http://woodshole.er.usgs.gov/operations/ia/public_ds_info.php?fa=2007-039-FA><http://woodshole.er.usgs.gov/operations/ia/public_ds_info.php?fa=2010-100-FA><http://woodshole.er.usgs.gov/operations/ia/public_ds_info.php?fa=2010-047-FA>

这些数据由马萨诸塞州海岸带管理办公室（Massachusetts Office of Coastal Zone Management, CZM）与美国地质调查局（U.S. Geological Survey, USGS）海岸与海洋地质项目、伍兹霍尔海岸与海洋科学中心（Woods Hole Coastal and Marine Science Center, WHCMSC）联合签署的合作协议采集。该项目于2003年启动，核心目标是构建区域地质框架数据集，以支撑海岸与海洋资源的管理工作。精准的海底地质数据与测绘图，是保护鱼类栖息地、划定海洋资源范围、评估自然或人为活动引发的环境变化的首要前置步骤。本项目聚焦马萨诸塞州沿海近岸海域，作业水深主要介于2至30米之间。本测绘合作项目采集的数据集已通过系列美国地质调查局公开文件报告对外发布，相关链接为：<http://woodshole.er.usgs.gov/project-pages/coastal_mass/html/current_map.html>。本研究区域的数据覆盖马萨诸塞州的巴泽兹湾（Buzzards Bay）与葡萄园海峡（Vineyard Sound），主要分布在伊丽莎白群岛东部及马萨诸塞州葡萄园岛周边的浅水区。本次采集的数据类型涵盖高分辨率水深测量数据、声学反向散射强度数据、水体声速数据、地震反射剖面数据及导航定位数据。上述数据于2007至2011年间，通过“拉斐尔号”（R/V Rafael）科考船的多次航次采集完成，所用设备包括：SEA有限公司SwathPlus干涉声呐（234 kHz）、Klein 3000双频侧扫声呐、冲击波震源与Geometrics公司8通道GeoEel拖缆系统、Knudsen 3200海底浅层剖面系统，以及4台GPS天线。更多关于本项目航次的详细信息，可查阅伍兹霍尔海岸与海洋科学中心的野外活动网页：<http://woodshole.er.usgs.gov/operations/ia/public_ds_info.php?fa=2011-013-FA> <http://woodshole.er.usgs.gov/operations/ia/public_ds_info.php?fa=2009-068-FA> <http://woodshole.er.usgs.gov/operations/ia/public_ds_info.php?fa=2007-039-FA><http://woodshole.er.usgs.gov/operations/ia/public_ds_info.php?fa=2010-100-FA><http://woodshole.er.usgs.gov/operations/ia/public_ds_info.php?fa=2010-047-FA>