ANALYSIS OF THE REGIONAL FLOW DURATION CURVE FOR DONGJIANG BASIN, SOUTH CHINA
A regional flow duration curve is a very useful tool in hydrological applications. The regional flow duration curve is generated by using flow data and the underlying surface characteristics of the thirteen catchments in Dongjiang basin. The flow duration curve for the each catchment is obtained by the traditional method, and, then the flows of various exceedance percentages Qp% are calculated. Based on the relationship between the flow of various exceedance percentages and the area and slope of the catchments, an empirical formula for the region flow duration curve is founded over eleven catchments out of the thirteen catchments. The empirical formula is then validated at the two other catchments in which the synthetic flow duration curves are very close to the actual flow duration curves. The validation results suggest that the method adopted in this study has the ability to generate the synthetic flow duration curves at ungauged catchments in the study region, and the flow duration curves of ungauged basins can be calculated using the empirical formulas of region flow duration curves.
regional duration curve Dongjiang Basin ungauged basin regression method
Tao Jiang Guoru Huang
Center of Water Resources and Environment, Sun Yat-sen University,Guangzhoo 510275, China School of Civil Engineering and Transportation,South China University of Technology, Guangzhou 51064
国际会议
第16届亚太地区国际水利学大会暨第3届水工水力学国际研讨会(16th IAHR-APD Congress and 3rd Symoposium of IAHR-ISHS)
南京
英文
45-49
2008-10-20（万方平台首次上网日期，不代表论文的发表时间）