AN AUTOMATED TECHNIQUE FOR DELINEATING AND CHARACTERIZING VALLEY-BOTTOM SETTINGS

摘要

Accurate delineation and characterization of valley-bottom setting is crucial to the as- sessment of the biological and geomorphological components of riverine systems; yet, to date, most valley-bottom mapping endeavors have been done manually. To improve this situation, we devel- oped automated techniques in a Geographic Information System(GIS)for delineating and charac- terizing valley-bottom setting in river basins ranging in size from approximately 1,000-10,000 km~2.