Efficacy of ARC/INFO GIS Application to Hydrologic Modeling
作者： J. J. Warwick , S. J. Haness
DOI: 10.1061/(ASCE)0733-9496(1994)120:3(366)
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摘要: A hypothetical watershed was constructed to test the efficacy of using ARC/INFO geographic information system provide spatially related input for U.S. Army Corps Engineers HEC‐1 hydrologic model. The performed tedious and time‐consuming tasks spatial averaging (basin areas, average runoff curve numbers. etc.) quite well. Difficulties, however, were encountered in TIN (triangulated irregular network) module accurately assess rainfall intensities. inaccuracies associated with computation basin intensities quantified by a defined pattern imposed upon simple geometric shape (equilateral triangle) found be directly number prescribed contouring intervals. highest density intervals (0.010 nm) resulted only 0.55% over‐estimation. location rain gages relative boundaries imparted significant error (approximately ± 10%) av...
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