小波方差分析伊河流域降雨径流周期特征

Analysis on the Periodic Characteristic of Rainfall and Runoff in Yihe River Basin by the Wavelet Square Deviation

采用小波分析方法和回归分析方法,对伊河流域1982年以来历年逐月长系列降雨径流资料进行分析研究,结果显示:三站降雨周期一致性显著,由于陆浑水库的修筑,陆浑站径流周期与潭头、东湾存在较大差异;小尺度上降雨径流周期一致性明显,大尺度上降雨径流周期一致性较差。

The monthly rainfall and runoff series data since 1982 have been analyzed by using the wavelet square deviation method and regression analysis method. The results showed that the rain fall period in three gauging station was obvious coherence. Because of the construction of Luhun Reservoir, the runoff period in Luhun was different from Tantou and Dongwan. In little time scales periodic coherence in rainfall and flow is obvious, but in big time scales the coherence is bad.