城镇化流域降水径流氢氧同位素特征及洪水径流分割

谢林环,江涛,曹英杰,张得胜,黎坤,唐常源

Characteristics of hydrogen and oxygen isotopes in precipitation and runoff and flood hydrograph separation in an urbanized catchment

XIE Linhuan,JIANG Tao,CAO Yingjie,ZHANG Desheng,LI Kun,TANG Changyuan

表4 事前水、事件水δ18O及分割结果不确定性

Tab. 4 δ18O of event water, pre-event water and uncertainties associated with hydrograph separation

洪水编号 NO.1702 NO.1714 NO.1720 事前水 事件水 事前水 事件水 事前水 事件水 δ18O平均值(‰) -5.09 -12.87 -6.99 -15.89 -6.21 -10.14 na 6 4 4 8 4 6 标准差 0.04 0.93 0.08 0.96 0.06 1.12 t/70%b 1.156 1.250 1.250 1.119 1.250 1.156 t/95%b 2.571 3.182 3.182 2.365 3.182 2.571 Wi/70%c 0.04 1.16 0.10 1.08 0.08 1.30 Wi/95%c 0.09 2.96 0.25 2.28 0.20 2.89 W/70%(%)d 7 6 12 W/95%(%)d 19 12 27