Application and comparison of two channel flood routing methods in Xinjiang mountainous areas
Received date: 2022-11-14
Revised date: 2023-06-08
Online published: 2023-08-24
We applied the two built-in channel routing methods of the WRF-Hydro model (i.e., the diffusive wave and the Muskingum-Cunge methods) to the upstream area of the Shimen Hydrological Station in the Hutubi River Basin and used GFS precipitation data for model input. The difference between the simulated and measured runoff was compared and analyzed using daily flow observations from 2015 to 2019 and annual average flow data from 1978-1983 and 2008-2019 at the Shimen Hydrological Station. We also discussed the simulation effect of the flood evolution method based on the WRF-Hydro model in the Xinjiang inland arid mountainous area. The results show that the simulation effect of the diffusive wave method is generally better than that of the Muskingum-Cunge method. This paper analyzes some characteristics of the two river routing models of WRF-Hydro to simulate floods. The diffusive wave method had better simulation results, but took longer, whereas the Muskingum-Cunge method had less ideal simulation results, but went faster.
Key words: Xinjiang; inland arid area; diffusive wave; Muskingum-Cunge; flood routing
Xiang WANG , Haishen LYU , Yonghua ZHU , Chenyu GUO . Application and comparison of two channel flood routing methods in Xinjiang mountainous areas[J]. Arid Zone Research, 2023 , 40(8) : 1240 -1247 . DOI: 10.13866/j.azr.2023.08.04
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