Effects of DEM source and resolution on the HEC-HMS hydrological simulation

被引：0
作者：
Jiangsu Key Laboratory of Agricultural Meteorology, School of Applied Meteorology, Nanjing University of Information Science and Technology, Nanjing [1 ]
210044, China
不详 [2 ]
210008, China
不详 [3 ]
430074, China
机构：
[1] Jiangsu Key Laboratory of Agricultural Meteorology, School of Applied Meteorology, Nanjing University of Information Science and Technology, Nanjing
[2] Jiangsu Meteorological Observatory, Nanjing
[3] Hubei Key Laboratory for Heavy Rain Monitoring and Warning Research, Institute of Heavy Rain, CMA, Wuhan
来源：
Shuikexue Jinzhan | / 5卷 / 624-630期
基金：
中国国家自然科学基金;
关键词：
ASTER; 30; m; Digital elevation model; HEC-HMS model; Resample; Runoff simulation; SRTM; 90;
D O I：
10.14042/j.cnki.32.1309.2015.05.003
中图分类号：
学科分类号：
摘要：
Hydrological simulations are affected by the parameters derived from DEM, which describes the water-shed features. Xitiaoxi River basin was selected to simulate two runoff processes in Jun and Aug to Sep 2011 using the HEC-HMS model with ASTER 30 m DEM, SRTM 90 m DEM and DEM resample data as input for HEC-geoHMS to derive the basin characteristics. The results showed that, the simulated and observed flood were fitting well and the efficiency coefficients of the model were all larger than 0.82, Uni-modal flood showed a better performance in runoff simulation than multi-modal flood. The efficiency coefficients of model based on SRTM 90 m was larger than based on ASTER 30 m DEM and resampled 90 m DEM. The efficiency coefficients of model based on resampled DEM had nonlinear relationship with DEM resolution. The relative error of HEC-HMS simulations based on ASTER 30 m DEM and SRTM 90 m DEM had a difference of 3%-5%. The relative error of simulations based on the SRTM 90 m DEM and the resampled 90 m DEM had a difference of 2%-4%. The maximum difference between the relative error of HEC-HMS simulations based on the resampled 90 m DEM was 11%. ©, 2015, Science Press. All right reserved.
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页码：624 / 630
页数：6
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