基于Morlet小波分析的长江大通站径流年际变化周期研究  

Research on runoff annual variation cycle at Datong hydrological station in Yangtze River based on Morlet wavelet analysis

作　　者：纪小敏 刘炜伟[2] 聂青[1] 程建敏[2] 

机构地区：[1]江苏省水文水资源勘测局,江苏南京210029 [2]江苏省水文水资源勘测局连云港分局,江苏连云港222004

出　　处：《江苏水利》2016年第6期26-29,34,共5页Jiangsu Water Resources

摘　　要：为研究长江入海径流量的变化规律,采用Morlet小波分析方法对长江大通水文站1950~2012年的年最大流量、年最小流量、年平均流量时间序列进行了分析,得到大通站的流量年际变化规律及变化周期。结果表明：大通站年最大流量增加了5.43%,年最小流量增加了39.4%,年平均流量减少了1.39%。The Morlet wavelet method is used for researching the discharge variation regularity of Yangtze River. Annual average discharge,annual maximum discharge and annual minimum discharge time series of Datong hydrological station from 1950 to 2012 are analyzed. Variation regularity and variation period of Datong hydrological station is obtained. The results show that the annual maximum discharge has increased by 5.43%,the minimum discharge has increased by 39.4%,the annual average discharge has reduced by 1.39%.

关 键 词：大通水文站 径流量 MORLET小波分析 变化趋势 变化周期 

分 类 号：TV121[水利工程—水文学及水资源]