基于小波分析的浑河流域径流量周期分析

Periodic analysis of runoff in the Hun River Basin based on wavelet analysis

利用浑河流域北口前、抚顺、邢家窝棚三个水文站1954―2011年径流量资料,采用Morlet小波分析法对径流序列进行周期分析。结果表明:流域径流演变过程存在明显的多时间尺度特征,存在5―10年、15―20年、35―40年时间尺度的周期变化,且16年尺度的周期变化最明显。

Based on the runoff data observed from 1954 to 2011 by hydrological stations in Hun River Basin , the periodic characteristics are analyzed by use of wavelet analysis.The results suggest that there are obvious multiple time scales in the annual runoff variation process,with the period of 5 to 10 years,15 to 20 years,35 to 40 years in three time scales.The main period of annual runoff is 16 years.