Grid of depth to basement in deep-water basins offshore Washington, Oregon, and California (cowbsmg.tif) based on data collected in 1984

COWBSMG is a 1000-m resolution grid of depth to basement off of Washington, Oregon, and California constructed from depth to basement contour data (cowbsm.shp, also in this data set) from 1:1,000,000-scale maps (Gardner and others, 1992, 1993a, 1993b). The range in depth to basement in this region is -5582 to -985 m with a mean of -3817 m.

COWBSMG是一套分辨率为1000米的基底埋深（depth to basement）网格数据集，覆盖华盛顿州、俄勒冈州与加利福尼亚州近岸海域，其构建数据源自1:100万比例尺地图中的基底埋深等值线数据（cowbsm.shp，该文件亦包含于本数据集内），相关研究由Gardner等人于1992、1993a、1993b年完成。该区域内基底埋深的取值范围为-5582米至-985米，平均值为-3817米。