摘要
以长江口天生港、浒浦闸(闸下)和吴淞3个潮位站为例,采用M-K检验、小波分析以及滑动平均序列提取趋势项等方法进行了1956—2009年的年平均潮位的一致性检验与修正。M-K检验表明,各站的潮位均有明显的上升趋势。小波分析表明,天生港、浒浦闸(闸下)和吴淞站的潮位序列分别具有17 a,16 a和16 a的主周期。根据各站年平均潮位的变化周期,分别求出天生港、浒浦闸(闸下)和吴淞站的17 a,16 a和16 a滑动平均潮位序列,提取滑动平均序列的趋势项以量化潮位的变化趋势,并据此对年平均潮位序列进行一致性修正,为长江口水资源可持续利用提供参考。
Mann-Kendall test, wavelet analysis and tendency item extraction from moving average series were uti- lized for the consistency analysis of annual mean tide level from 1956 to 2009 in Yangtze River estuary. Tiansheng- gang, Hupuzha（Zhaxia） and Wusong station were taken as case study. M-K test showed that there was an obvious rising tendency for the annual mean tide level at each station. MexHat wavelet function was utilized for the cycle a- nalysis of annual mean tide level series, which showed that there were primary cycles of 17a, 16a and 16a in Tian- shenggang, Hupuzha（Zhaxia） and Wusong station respectively. According to the tide level cycle, the moving aver- age series of annual mean tide level at Tianshenggang, Hupuzha（Zhaxia） and Wusong station were calculated, and the tendency items were extracted to quantify the variation tendency of annual mean tide level series respectively. Furthermore, consistency correction was carried out on annual mean tide level series. The present research provided theoretical basis for the sustainable development of water resources in Yangtze River Estuary.
出处
《长江科学院院报》
CSCD
北大核心
2013年第4期6-10,共5页
Journal of Changjiang River Scientific Research Institute
基金
国家自然科学基金资助项目(51109053
51190091
50979024)
中央高校基本科研业务费专项资金资助(2009B06314)
关键词
年平均潮位
M-K检验
小波分析
滑动平均序列提取趋势项
一致性修正
annual mean tide level
M-K test
wavelet analysis
extracting tendency item from moving average series
consistency correction
