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）开展了地质测绘工作，以表征马萨诸塞州近海的海底特性。本次测绘于1994年至1998年间的四次科考航次中完成，依托搭载于“弗雷德里克·G·克里德”号（Frederick G. Creed）科考船上的Simrad Subsea EM 1000多波束测深仪进行。本次测绘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支持。本次测绘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）项目，该项目将展示本次勘测得到的水深地形、晕渲水深地形及反向散射强度数据的影像与网格数据，以满足科研、管理及公众的相关需求。