长江口潮位一致性检验与修正方法研究
收稿日期: 2012-01-08
修回日期: 2013-04-09
网络出版日期: 2013-04-09
基金资助
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）
Consistency Test and Correction of Tidal Level in Yangtze River Estuary
Received date: 2012-01-08
Revised date: 2013-04-09
Online published: 2013-04-09
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。
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
肖淼元 , 李国芳 , 王伟杰 . 长江口潮位一致性检验与修正方法研究[J]. 长江科学院院报, 2013 , 30(4) : 6 -10 . DOI: 10.3969/j.issn.1001-5485.2013.04.002
Mann-Kendall test, wavelet analysis and tendency item extraction from moving average series were utilized for the consistency analysis of annual mean tide level from 1956 to 2009 in Yangtze River estuary. Tianshenggang, 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 analysis of annual mean tide level series, which showed that there were primary cycles of 17a, 16a and 16a in Tianshenggang, Hupuzha(Zhaxia) and Wusong station respectively. According to the tide level cycle, the moving average 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.
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