10-m resolution image of shaded relief multibeam bathymetry in Massachusetts Bay, colored by water depth (MB_BATHYCLR10M.TIF)

The U.S. Geological Survey has conducted geologic mapping to characterize the sea floor offshore of Massachusetts. The mapping was carried out using a Simrad Subsea EM 1000 Multibeam Echo Sounder on the Frederick G. Creed on four cruises conducted between 1994 and 1998. The mapping was conducted in cooperation with the National Oceanic and Atmospheric Administration (NOAA) and with support from the Canadian Hydrographic Service and the University of New Brunswick.
The long-term goal of this mapping effort is to produce high-resolution geologic maps and a Geographic Information System (GIS) project that presents images and grids of bathymetry, shaded relief bathymetry, and backscatter intensity data from these surveys that will serve the needs of research, management and the public.

美国地质调查局（U.S. Geological Survey）已开展海底地质填图工作，以刻画马萨诸塞州近海的海底地质特征。本次填图作业于1994年至1998年间的四次巡航中完成，作业载体为“弗雷德里克·G·克里德”号（Frederick G. Creed）科考船，使用的设备为Simrad Subsea EM 1000型多波束测深仪（Multibeam Echo Sounder）。该填图工作与美国国家海洋和大气管理局（National Oceanic and Atmospheric Administration, NOAA）合作开展，并获得了加拿大水文局与新不伦瑞克大学的技术支持。本次填图项目的长期目标是制作高分辨率地质图，以及一套地理信息系统（Geographic Information System, GIS）成果，该成果将展示本次勘测获取的水深数据、晕渲水深数据以及后向散射强度数据的影像与网格数据集，以满足科研、管理及社会公众的相关需求。