HYDROGRAPH SEPARATIONS BASED ON ISOTOPICCHEMICAL MIXING MODELS
Hydrograph separation of rainfall-runoff events in the Wudaogou Hydrological Experimental Catchment (WHEC) in north Anhui Province of China was carried out using stable isotopes oxygen-18 and deuterium, electrical conductivity (EC) and specific concentration of calcium as hydrological tracers. The streamflow components were determined in the study area with particular focus on the spatial and temporal variations of catchment sources. Precipitation, soil water,groundwater and streamwaters were sampled and analyzed for Calcium, EC, 18O and 2H, which were finally selected to assess the different contributing sources using mass balance equations and end-member mixing diagrams. This analysis indicates that despite the uncertainty, the flow sources,which generate the stream flow, are clearly identified at the WHEC scale by the application of the isotopic-chemical mixing model.
hydrograph separation uncertainty analysis stable isotopes rainfall-runoff hydrochemistry
Zhongcheng Tan Baohong Lu Jiyang Wang
College of Hydrology and Water Resources, Hohai University, Nanjing, China Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China
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
231-235
2008-10-20（万方平台首次上网日期，不代表论文的发表时间）