基于数学模型的长江口海域潮位推算方法  

Tidal level estimation method in Yangtze estuary based on mathematical model

作　　者：罗小峰[1,2] 黄海龙[1,2] 路川藤[1,2] 石景元 丁伟[4] LUO Xiaofeng;HUANG Hailong;LU Chuanteng;SHI Jingyuan;DING Wei(Nanjing Hydraulic Research Institute,Nanjing 210029,China;State Key Laboratory of Hydrology,Water Resources and Hydraulic Engineering Science,Nanjing Hydraulic Research Institutc,Nanjing 210098,China;Shanghai Maritime Surveying and Mapping Center,Donghai Navigation Support Center,Shanghai 200000,China;Hohai University,Nanjing 210029,China)

机构地区：[1]南京水利科学研究院,江苏南京210029 [2]南京水利科学研究院水文水资源与水利工程科学国家重点实验室,江苏南京210098 [3]东海航海保障中心上海海事测绘中心,上海200000 [4]河海大学,江苏南京210029

出　　处：《武汉大学学报（工学版）》2020年第9期761-765,共5页Engineering Journal of Wuhan University

基　　金：国家重点研发计划项目(编号:2017YFC0405400)。

摘　　要：潮位控制是水深测量中的一个关键问题,对于缺少长期潮位站的水域,多通过抛设临时潮位站的方法进行潮位推算,而临时站潮位数据的不确定性增加了潮位推算的困难性。建立了长江口海域二维潮流数学模型,在验证良好的基础上,采用数学模型潮位计算值进行潮位推算,结果显示,利用13个分潮推算潮位相对误差最小。与规范法推算潮位相比,基于数学模型的推算潮位误差略大,但准确度接近,说明在长江口海域采用数学模型潮位值进行潮位推算是可行的。Tidal level control is a key problem in bathymetric survey.For water areas lacking long-term tidal level stations,the method of setting up temporary tidal level stations is often used to measure tidal level.The uncertainty of tidal level data at temporary stations increases the difficulty of tidal level estimation.A twodimensional tidal current mathematical model in the Yangtze estuary is established.On the basis of good verification,the tidal level is calculated by using the mathematical model.The results show that the relative error of the tidal level calculated by 13 tidal components is smallest.Compared with the specification-based method,the error of tidal level estimation based on the mathematical model is slightly larger,but the accuracy is close,which indicates that it is feasible to use mathematical model to calculate tidal level in the Yangtze estuary.

关 键 词：长江口 数学模型 潮位推算 余水位 调和分析 CJK3D-WEM 

分 类 号：P229[天文地球—大地测量学与测量工程]