1954—2016年疏勒河上游径流变化特征及影响因素
孙美平1,2(
), 张磊1, 姚晓军1, 彭莉斌1, 张浩1, 牛舒婷1
), 张磊1, 姚晓军1, 彭莉斌1, 张浩1, 牛舒婷1
Characteristics and influencing factors of runoff changes in the upper Shule River basin from 1954 to 2016
Meiping SUN1,2(), Lei ZHANG1, Xiaojun YAO1, Libin PENG1, Hao ZHANG1, Shuting NIU1
), Lei ZHANG1, Xiaojun YAO1, Libin PENG1, Hao ZHANG1, Shuting NIU1
图4. 昌马堡水文站年径流Morlet小波分析及经验模态分解［（a）为小波实部图，小波影响椎（图中弧线）以内的小波方差对应周期为有效周期；（b）为小波方差图，红色实线为方差曲线，灰色虚线为傅立叶谱，黑色虚线为95%置信水平；（c）为年径流量经验模态分解］
Fig.4. Morlet wavelet analysis and empirical modal decomposition of annual runoff at Changmabao hydrological station （subfigure （a） is the real part of Morlet wavelet and the curve corresponding to wavelet variance in centrum represents the effective period； subfigure （b） is wavelet variance， and the red solid line， gray dashed line and black dashed line denote variance， Fourier spectrum and confidence level with 95%， respectively； subfigure （c） is empirical mode decomposition of annual runoff）
