航渡式水深测量水位改正优化:(二)潮汐模型融合  

Optimization research about hydrographic waterlevel correction of single sea route(two):fusion of tide models

作　　者：黄辰虎 丁天昊 苑福利 唐岩 柯灏[2] HUANG Chenhu;DING Tianhao;YUAN Fuli;TANG Yan;KE Hao(Naval Research Institute,Tianjin 300061,China;Institute of Surveying and Mapping,Wuhan University,Wuhan 430079,China;Chart Information Center,Tianjin 300450,China)

机构地区：[1]海军研究院,天津300061 [2]武汉大学中国南极测绘研究中心,湖北武汉430079 [3]海图信息中心,天津300450

出　　处：《海洋测绘》2025年第1期25-30,共6页Hydrographic Surveying and Charting

基　　金：国家自然科学基金(42174013,42374050)。

摘　　要：针对全球海域航渡式水深测量水位改正难题,对DTU23、FES2014、EOT20、TPXO9、GOT4.8及HAMTIDE11a等国际模型作精度评估,优选不同分潮融合生成空间分辨率1/32°新模型。经与太平洋152个、大西洋118个、印度洋54个、南极海域16个验潮站各1个月时长的水位观测数据比对,中误差分别为21.4 cm、15.1 cm、23.9 cm、11.7 cm,新模型的空间分辨率及天文潮预报精度均优于现有模型,下步工作是构建全球海域Sa、Ssa长周期天文气象分潮,以适配全球范围的深度基准计算和天文潮预报。Aiming at the difficult problem of water level correction for hydrographic surveying in global sea area,the accuracy of six major international tidal models,including DTU23,FES2014,EOT20,TPXO9,GOT4.8 and HAMTIDE11a,was evaluated in different sea areas around the world.Accordingly,each tidal constituent was optimized and fused to generate a new model with a spatial resolution of 1/32°.After comparing with the sea level observation data of 1 month at 152 tide gauges in the Pacific,118 in the Atlantic,54 in the Indian Ocean and 16 in the Antarctic,this new model’s mean square error was 21.4,15.1,23.9 and 11.7 cm respectively.The spatial resolution and accuracy of astronomical tide predictions of the new model are better than those of the existing global models.At the same time,it is pointed out that the next step is to construct models of tide constituents,such as Sa and Ssa,in global ocean regions for better adaptation to depth datum calculations and astronomical tide predictions on a global scale.

关 键 词：水深测量 水位改正 潮汐模型 天文气象分潮 深度基准 

分 类 号：P229.3[天文地球—大地测量学与测量工程]