海洋测绘2023，Vol.43Issue(6)：34-37,65,5.DOI:10.3969/j.issn.1671-3044.2023.06.008
南海沿海港口航道图深度基准面计算与评估
Calculation and evaluation of chart datum for coastal port and fairway in the South China Sea
摘要
Abstract
The"Specifications for Hydrographic Survey"(GB 12327-2022)is formally implemented.Evaluation of chart datum for coastal port and fairway in the South China Sea can provide data support for the maintenance of marine vertical datum in accordance with the new specifications.This article analyzes the water level data longer than 2 years from 17 long-term water level stations in the area under the jurisdiction of Guangzhou Hydrographic Center,and the data of 28 short-term and temporary water level stations adjacent to the long-term station.It evaluates the L value and depth datum guarantee rate of the long-term water level stations,and analyzes the transmission accuracy of the mean sea level and chart datum of the short-term and temporary water level stations.The results demonstrate that the depth datum guarantee rate of the three algorithms of 17 long-term water level stations exceeded 98％,ensuring the safety of navigation.L values of depth datum surfaces of different methods are different,53％of long-term water level stations exceed 10 cm,7％short-term and temporary water level stations exceed 15 cm,11％of short-term and temporary water level stations,the difference between the median L values of the two methods and the original values exceeds 15 cm,and it was urgent to remedy the values of chart datum for coastal port and fairway in the South China Sea.关键词
海洋测绘/南海沿海港口航道图/调和分析/统计余水位/传递平均海面/评估深度基准面Key words
hydrographic surveying and charting/coastal port and fairway charts in the South China Sea/harmonic analysis/statistical residual water level/calculate mean sea level/evaluate chart datum分类
天文与地球科学引用本文复制引用
何志敏,俞成明,王华强,卢秉武,周争桥..南海沿海港口航道图深度基准面计算与评估[J].海洋测绘,2023,43(6):34-37,65,5.基金项目
广州海事测绘中心创新工作室2022年课题研究计划(2022-5). （2022-5）
