摘要
利用紫坪铺水文站1966～2002年实测月径流资料,对岷江中上游径流时间序列分4个季节进行小波分析.由此发现,岷江中上游径流时间序列具有多个时间尺度的周期变化特征.四个季节径流量序列分别以主周期为16a,2.5a,11a,18.5a的振荡能量最为强大,径流量的主周期主要分布在较小的时间尺度上.
By use of the actual monthly run-off data kept by Zipingpu hydrometricalstation, a wavelet analysis is made for the time series of the upstream run-off in the Minjiang River by season. The results show a periodical change in terms of a few dimensions concerning the time series in middle and upperstream run-offs in the Minjiang River. The strongest oscillation energy for the four seasons is observed when the primary period i~ at 16a, 2.5a, 1 la and 18.5a respectively and the primary pe- riod of the run-offs is basically distributed at a relatively smaller temporal dimension.
出处
《内江师范学院学报》
2011年第8期57-61,共5页
Journal of Neijiang Normal University
关键词
岷江中上游
径流
小波分析
紫坪铺
the middle and upper Minjiang River
run-off
wavelet analysis
period
Zipingpu hydrometrical station
