航渡式水深测量水位改正优化:(一)潮汐模型评估
Optimization research about hydrographic waterlevel correction of single sea route(一)accuracy evaluation about DTU23 and FES2014
黄辰虎 1刘敏 2王本洪 2欧阳永忠 3翟国君1
作者信息
- 1. 海军研究院,天津 300061
- 2. 91001 部队,北京 100841
- 3. 福建理工大学 智慧海洋科学技术学院,福建 福州 350118
- 折叠
摘要
针对全球海域航渡式水深测量水位改正难题,对最新潮汐场模型DTU23 和代表性强的FES2014 开展了精度评估,结果表明在北半球 12 个验潮站位处DTU23 与ArcTiCA中 8 个主要分潮总体预报误差为 8.64 cm,在莫桑比克海峡 12 个随机点位处DTU23 与FES2014 中8 个主要分潮总体预报误差仅1.19 cm,而在2 个不同海域分潮振幅和迟角的等值线图则表明DTU23 与CST1 相似性较强,DTU23 与FES2014 相似性极强.提出了融合全球潮汐模型并新构建全球Sa、Ssa长周期分潮和小区域精细化潮汐模型的水位改正优化新思路,可为后续进一步提高全球海域航渡式水深测量水位改正精度提供数据支撑.
Abstract
Aiming at the difficult problem of water level correction for hydrographic surveying in global sea area,the accuracies of DTU23 and FES2014 are evaluated in advance.The results show that at 12 tide stations in the Northern Hemisphere,compared with ArcTiCA,the overall prediction error of 8 main constituents in DTU23 is 8.64 cm,and compared with FES2014 at 12 random points in the Mozambique Channel,the overall prediction error of 8 main constituents in DTU23 is only 1.19 cm.The contour maps of tide amplitude and phase lag show that there is a strong similarity between DTU23 and CSTl,and between DTU23 and FES2014.On the basis,a new idea of water level correction and optimization is put forward,which integrates several global tidal models and constructs global Sa and Ssa long-period tidal constituents and regional fine tidal model.It can provide reliable data for the subsequent water level correction for hydrographic surveying in global sea area.
关键词
水深测量/水位改正/验潮站/潮汐场/长周期分潮Key words
hydrographic surveying/waterlevel correction/tidal gauge/tidal model/long-period tidal component引用本文复制引用
基金项目
国家自然科学基金(42174013)
国家自然科学基金(42374050)
出版年
2024
国家科技期刊平台
NSTL
万方数据