不同海潮模型对闽海潮负荷位移估计的影响  

Influences on OTL displacement estimation using different ocean tide models in Fujian

作　　者：王俊杰 郭锴 WANG Junjie;GUO Kai(Department of Geomatics Engineering,Minjiang University,Fuzhou 350108,China;Key Laboratory for Geo-Environmental Monitoring of Great Bay Area of the Ministry of Natural Resources,Shenzhen University,Shenzhen,Guangdong 518060,China)

机构地区：[1]闽江学院测绘工程系,福州350108 [2]深圳大学自然资源部大湾区地理环境监测重点实验室,广东深圳518060

出　　处：《测绘科学》2021年第10期13-19,共7页Science of Surveying and Mapping

基　　金：福建省中青年教师教育科研项目(JAT190606)。

摘　　要：针对新型海潮模型对区域海潮负荷位移估计的影响分析不足的问题,该文依托福建省基础地理信息中心A级GNSS网,基于八大系列全球海潮模型的最新版本和区域海潮模型NAO99Jb,分析了不同海潮模型对福建地区海潮负荷位移的影响,并利用验潮站数据评定了海潮模型在当地的适用性。结果表明,海潮模型的差异主要集中在台湾海峡两岸,而在湄洲湾以北至浙江沿海一带,M2分潮的STD甚至超过30 cm;海潮模型差异主要影响海潮负荷位移的垂向分量,平均影响程度基本是水平分量的3倍;福建地区M2、S2、N2、K1和O1等分潮负荷位移的最大差异可达亚毫米至毫米级,且各分潮负荷位移的STD随着离海距离增大按负指数函数规律减小,海潮模型差异仅对近海50 km内的地区影响较大;FES2014b在闽台附近海域精度最高,是福建地区海潮负荷位移估计首选的海潮模型。In allusion to the lack of discussion on the influences on regional ocean tide loading(OTL)displacement estimation using recent ocean tide models,based on the A-class global navigation satellite system(GNSS)network of Fujian Basic Geographic Information Center,the most recent version of the eight global ocean tide models and the regional model NAO99 Jb have been chosen to analyze the influences on the OTL displacement in Fujian,and then the applicability of the selected models are assessed.The selected models suffer from large disagreements near the both sides of Taiwan Strait,and the M2 STDs are even more than 30 cm along the coastline from Meizhou Bay to Zhejiang province.The using of different models have a major impact on the vertical OTL displacements,whose magnitude is three times of the horizontal components on average.In Fujian,the maximum differences can be sub-millimeter and millimeter level for M2、S2、N2、K1 and O1 OTL displacements,and the STD of OTL displacement for each constituent decreases as the distance from the sea increases following a negative exponential function,and only in areas within 50 km do the using of different models have a larger impact.FES2014 bis the most accurate model in the research area,and hence preferable for the estimation of OTL displacements in Fujian.

关 键 词：海潮负荷位移 海潮模型 福建 验潮站 

分 类 号：P228[天文地球—大地测量学与测量工程]