Journal of Changjiang River Scientific Research Institute >
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
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.
XIAO Miao-yuan , LI Guo-fang , WANG Wei-jie . Consistency Test and Correction of Tidal Level in Yangtze River Estuary[J]. Journal of Changjiang River Scientific Research Institute, 2013 , 30(4) : 6 -10 . DOI: 10.3969/j.issn.1001-5485.2013.04.002
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