论文部分内容阅读
针对珠江河口地区水流受洪水波、潮波共同影响水位变化的复杂问题,为研究其演变特性,以南沙站、三沙口站和万顷沙西站为例,基于历史实测月高潮位数据,重构潮位时间序列相空间,采用自相关系数法求得3个潮位站月高潮位序列的延迟时间,并分别利用G-P算法和主分量分析法分析该序列混沌特性,求得其饱和关联维数。结果表明,月高潮位时间序列具有明显的混沌特性。
In order to study the evolution characteristics of the water flow in the Pearl River estuary region affected by both flood wave and tide wave, taking Nansha Station, Sanshakou Station and Wanqishaxi Station as examples, based on the historical measured monthly tide level data, Tidal potential time series phase space, the delay time of three tidal station moon tide level series was calculated by the method of autocorrelation coefficient, and the chaotic characteristics of the series were analyzed by GP algorithm and principal component analysis respectively to obtain the saturation correlation dimension. The results show that the time series of moon tide have obvious chaotic characteristics.