U.S. Coastal Relief Model Vol.6 - Southern California

NGDC's U.S. Coastal Relief Model (CRM) provides the first comprehensive view of the U.S. coastal zone integrating offshore bathymetry with land topography into a seamless representation of the coast. The CRM spans the U.S. East and West Coasts, the northern coast of the Gulf of Mexico, Puerto Rico, and Hawaii, reaching out to, and in places even beyond, the continental slope. Bathymetric and topographic data sources include: NGDC's NOS hydrographic surveys, multibeam bathymetry, and trackline bathymetry; the U.S. Geological Survey (USGS); and other federal government agencies and academic institutions. Bathymetric contours from the International Bathymetric Chart of the Caribbean Sea and the Gulf of Mexico project were also used. Digital elevation models (DEMs) of the Great Lakes, Southern Alaska, and high-resolution DEMs of U.S. coastal communities and territories are also available.

美国国家地球物理数据中心（National Geophysical Data Center, NGDC）的美国海岸地形模型（U.S. Coastal Relief Model, CRM），提供了首个覆盖美国海岸带的全域综合可视化成果，将近海水深数据与陆地地形数据整合为无缝衔接的统一海岸展示模型。该模型覆盖美国东、西海岸，墨西哥湾北部沿岸区域，波多黎各及夏威夷群岛，其空间范围延伸至大陆坡，部分区域甚至超出大陆坡边界。水深与地形数据的来源包括：NGDC下属国家海洋服务局（National Ocean Service, NOS）的水文勘测数据、多波束水深测量数据与测线水深测量数据；美国地质调查局（United States Geological Survey, USGS）；以及其他联邦政府机构与学术科研机构。本次数据集还采用了加勒比海与墨西哥湾国际水深图项目产出的水深等值线数据。此外，大湖区、阿拉斯加南部的数字高程模型（Digital Elevation Model, DEM），以及美国沿海社区与领地的高分辨率数字高程模型也可供获取。