ASCII grid of bathymetry data collected by the U.S. Geological Survey and the National Oceanic and Atmospheric Administration offshore of Massachusetts between Duxbury and Hull with data gaps (DH_bathy_wgaps.asc, ARC/INFO ASCII GRID, UTM Zone 19, WGS84)

These data were collected under a cooperative agreement with the Massachusetts Office of Coastal Zone Management (CZM) and the U.S. Geological Survey (USGS), Coastal and Marine Geology Program, Woods Hole Science Center (WHSC). 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 sea-floor 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 (5-30 m deep) of Massachusetts between the New Hampshire border and Cape Cod Bay. 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). This spatial dataset is from the study area located between Duxbury and Hull Massachusetts, and consists of high-resolution geophysics (bathymetry, backscatter intensity, and seismic reflection) and ground validation (sediment samples, video tracklines and bottom photographs). The data were collected during four separate surveys conducted between 2003 and 2007 (NOAA survey H10993 in 2003, USGS-WHSC survey 06012 in 2006, and USGS-WHSC surveys 07001 and 07003 in 2007) and cover more than 200 square kilometers of the inner continental shelf.

本数据集依托与马萨诸塞州海岸带管理办公室（Massachusetts Office of Coastal Zone Management, CZM）以及美国地质调查局（U.S. Geological Survey, USGS）伍兹霍尔科学中心海岸与海洋地质项目（Coastal and Marine Geology Program, Woods Hole Science Center, WHSC）达成的合作协议采集完成。该项目于2003年启动，核心目标是构建区域地质框架信息，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图件，是保护鱼类栖息地、划定海洋资源范围以及评估自然或人类活动引发的环境变化的重要前置步骤。本项目聚焦于马萨诸塞州境内新罕布什尔州边界至科德角湾之间的近岸海域（水深5-30米）。本次制图合作项目采集的数据已以系列美国地质调查局公开文件报告（USGS Open-File Reports）的形式发布，详情可访问：http://woodshole.er.usgs.gov/project-pages/coastal_mass/html/current_map.html。本次空间数据集的研究区域位于马萨诸塞州达克斯伯里（Duxbury）与赫尔（Hull）之间，数据集包含高分辨率地球物理探测数据（水深测量、背散射强度、地震反射）以及地面验证数据（沉积物样品、视频测线与海底照片）。这些数据采集于2003年至2007年间开展的四次独立勘测：2003年的美国国家海洋和大气管理局（National Oceanic and Atmospheric Administration, NOAA）H10993号勘测、2006年的USGS-WHSC 06012号勘测，以及2007年的USGS-WHSC 07001、07003号勘测，覆盖了超过200平方公里的内陆架区域。