基于珠江入海口顾及浅水分潮特征的深度基准面传递方法研究
Research on the Method of Calculating the Friction Effect of Shallow Water in the Estuary Taking Into Account the Depth Datum Transport Based on the Estuary of the Pearl River
余锐 1万利 2李爽1
作者信息
- 1. 广州市城市规划勘测设计研究院,广东 广州 510060;广州市资源规划和海洋科技协同创新中心,广东 广州 510060;广东省城市感知与监测预警企业重点实验室,广东 广州 510060
- 2. 武汉大学测绘学院,湖北 武汉 430079
- 折叠
摘要
采用珠江入海口处潮位数据进行顾及浅水分潮特征的深度基准面传递方法的研究,并选取该区域五个验潮站潮位数据进行实验,实验先进行潮汐调和分析,解算基于长期观测数据的各分潮较为稳定的正、余弦分量,再通过附加参数间的限制条件,采用约束平差法实现对短期数据进行调和分析,得到基于短期数据的各分潮正、余弦分量,再通过参数变换得到各分潮潮高和迟角,综合分析浅水分潮对潮汐预报和基准传递的影响.根据上述分析结果提出顾及浅水分潮特征的改进深度基准面传递算法,并验证该方法在珠江入海口处的有效性.
Abstract
In this paper,the tidal level data at the estuary of the Pearl River is used to study the experiment of the depth datum transfer method considering the friction effect of shallow water in the estuary,and the tide level data of five tide test stations in this area are selected for experiments,and the tidal harmonic and analysis are successively carried out to solve the positive and semisine components of each sub-tide based on long-term observation data,and then through the restriction conditions between the additional parameters,the constraint adjust-ment method is used to adjust and analyze the short-term data,and the positive and cosine components of each sub-tide based on short-term data are obtained. The influence of shallow moisture tides on tide prediction and datum transmission is comprehensively analyzed by parameter transformation.Based on the above analysis results,an improved depth datum transfer algorithm considering the characteristics of shallow water tide components is proposed,and the effectiveness of this method at the the Pearl River estuary is verified.
关键词
珠江入海口/浅水分潮特征/深度基准面传递Key words
Pearl River/shallow water tide/depth datum transfer引用本文复制引用
基金项目
广州市资源规划和海洋科技协同创新中心项目(2023B04J0301)
广州市资源规划和海洋科技协同创新中心项目(2023B04J0191)
广东省重点领域研发计划资助(2020B0101130009)
广东省城市感知与监测预警企业重点实验室基金项目(2020B121202019)
广州市城市规划勘测设计研究院科技基金项目(RDI2220201029)
出版年
2024
NETL
NSTL
万方数据