摘要
采用Morlct小波对1956—2006年寸滩站流量系列资料进行了周期分析。结果表明,流量序列均存在3类时间尺度的周期,主周期均为14年,次周期分别为11年,第三周期为9年,主周期经历了高→低→高→低→高→低→高→低→高→低→高→低→高6个循环交替,人类活动的是造成年际周期变化的主要因素,未来影响活动的加剧,会使寸滩站径流的周期变化产生一定的变化。
With Morlet wavelet, the flow data of Cuntan gau results show that the flow sequence has 3 kinds of period o years, sub--cycle 11 years, the third 9 years, the first one mainly caused by the activity of the human being, and more the cycle change of runoff. ge from 1956 to 2006 are analyzed. The of time--scale, the main cycle needs 14 experienced 6 high--low cycles, which and more action in the future will affect
出处
《吉林水利》
2009年第8期5-8,共4页
Jilin Water Resources
关键词
小波分析
流量
尺度
周期
Wavelet analysis
flow
scaler cycle period
