基于18.6年卫星高度计资料对南海潮汐的分析与研究

作者：王延强  仉天宇  朱学明

单位：国家海洋环境预报中心, 国家海洋局海洋灾害预报技术研究重点实验室, 北京 100081

关键词：南海 潮汐 卫星高度计 变轨资料 18.6 年 调和分析

分类号：P731.23

出版年·卷·期（页码）：2014·31·第二期（35-40）

摘要：

利用TOPEX/Poseidon,Jason-1/2共18.6年卫星高度计资料(含变轨后资料),采用最小二乘调和分析法,提取南海12个分潮(Sa, Ssa,Mm,Mf, Q1, O1, P1, K1, N2,M2, S2和K2)调和常数,与沿岸及岛屿58个验潮站数据拟合较好。结果表明,采用更长时间序列的卫星高度计数据,尤其是增加变轨后的资料,分析所得结果得到明显改善。结合沿岸及岛屿264个验潮站数据,绘制4个主要分潮(M2, S2, K1和O1)的等振幅线和同潮时线,较好的展现了南海潮汐分布特征。

With least-squares fit harmonic analyses of 18.6 years of TOPEX/Poseidon and Jason-1/2 altimetry data which contain the interleaved data, harmonic constants of twelve constituents (Sa, Ssa, Mm, Mf, Q1, O1, P1, K1, N2, M2, S2, K2) are computed in the South China Sea. These harmonic constants are shown to be in good agreement with the data of 58 coastal and island stations. The results indicate that longer sequences of altimeter data can help to improve the analyses, especially after adding the interleaved satellite altimetry data. The tidal harmonics from altimetry and 264 coastal and island stations are used to draw a set of cotidal charts for four primary constituents (M2, S2, K1and O1). The cotidal charts present the characteristics of tidal distribution well.

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