Coastal Bathymetry of the Bering, Chuckhi, and Beaufort Seas

Bathymetric contours were generated from soundings collected by National Ocean Service vessels from ~1900 to ~1971. The 1:250,000 maps are available for U.S. coastal waters. Bathymetric contours are in meters, with 10 meter intervals out to 200 m, supplemented by 2 m contours. Beyond 200 m, contours are at 50 m intervals to maximum depth. The GIS database derived from these maps includes the Bering, Chukchi, and Beaufort Seas in western and northern Alaska (~100 maps).

等深线（Bathymetric contours）数据集源自1900年至1971年间由美国国家海洋服务局（National Ocean Service）作业船只采集的测深数据。该1:250000比例尺海图覆盖美国沿海水域。等深线单位为米，200米以浅采用10米间隔，并辅以2米间隔等深线；200米以深区域则以50米间隔绘制至最大水深。由这些海图衍生的地理信息系统（GIS, Geographic Information System）数据库涵盖阿拉斯加西部与北部海域的白令海、楚科奇海和波弗特海，共计约100张海图。