前期土壤湿度和降雨对小流域山洪预警指标的影响评估

翟晓燕, 郭良, 刘荣华, 张永勇, 王雅莉

Impact assessment of antecedent soil moisture conditions and rainfall variability on flash flood warning index at catchment scale

ZHAI Xiaoyan, GUO Liang, LIU Ronghua, ZHANG Yongyong, WANG Yali

表2 岳西水文站率定期和验证期山洪模拟评估指标

Tab. 2 Evaluation indices during both calibration and validation periods at Yuexi station

评价指标 率定期 验证期 平均值 合格率(%) 平均值 合格率(%) 径流深相对误差(%) 10.38 91 13.15 78 洪峰流量相对误差(%) 9.69 87 11.07 87 峰现时间误差(h) 0.90 93 0.51 100 Nash-Sutcliffe效率系数 0.79 89 0.77 83