改进的T_TIDE程序包在潮汐中的应用
Application of Improved T_TIDE Package in Tide
摘要: 基于独立点格式和三次样条插值，提出了一种新的处理非平稳潮汐的增强调和分析方法。该方法从T_TIDE程序包中开发出来，通过MATLAB工具箱S_TIDE实现。通过分析青岛港观测站逐时的潮位观测数据，进行灵敏度实验，讨论独立点数的选择。结果表明，当独立点个数为1时，S_TIDE与T_TIDE方法得到的回报潮汐水位、潮汐组成特性平和均海平面变化特性相似。随着独立点个数的不断增加，非线性趋势越来越明显，峰值和谷值点的个数递增，平均海平面显示出更多的振荡。因此，S_TIDE理论上可以应用于各种非平稳潮汐。
Abstract: Based on the independent point scheme and cubic spline interpolation, a new approach, enhanced harmonic analysis, was developed to deal with non-stationary tides. Enhanced harmonic analysis is realized by a MATLAB toolbox, S_TIDE, which is developed from the widely used T_TIDE. By analyzing the tide level observation data of Qingdao port observation station, the sensitivity experiment was carried out and the choice of independent points was discussed. The results show that when the number of independent points is 1, the returns of S_TIDE and T_TIDE are similar in tidal level, tidal composition and mean sea level. As the number of independent points increases, the nonlinear trend becomes more and more obvious, the number of peak and valley points increases, and the mean sea level shows more oscillations. Therefore, S_TIDE can be theoretically applied to all kinds of non-stationary tides.
文章引用：刘倩, 孙小淇. 改进的T_TIDE程序包在潮汐中的应用[J]. 应用数学进展, 2021, 10(1): 160-171. https://doi.org/10.12677/AAM.2021.101019

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