广东省近岸海域海面地形模型建立
Establishment of sea surface topography model in the coastal waters of Guangdong province
华水胜 1杨广武 1蔡怀玉 1朱亚兵1
作者信息
- 1. 广东省国土资源测绘院,广东 广州 510500
- 折叠
摘要
广东省近岸海域缺少高精度海面地形模型,无法准确为广东省无缝垂直基准面提供可靠标定与统一转换.将长达 19 年水位数据的验潮站作为基准站,对其他长期、中期验潮站通过平均海面传递方法进行加密,并结合水准联测数据得到验潮站沿岸海面地形值,最终采用反距离加权法建立广东省近岸海域海面地形模型.评估结果表明该模型误差优于 3.2 cm,明显高于有关参考文献给出的成果精度,对广东省陆海基准统一转换研究具有很高的参考和使用价值.
Abstract
The coastal waters of Guangdong province currently lack a high-precision sea surface topography model,which hinders the provision of accurate calibration and unified conversion for the seamless vertical datum in Guangdong province.This paper establishes a benchmark station using 19 years of water level data from a tide gauge station.Other long-term and medium-term tide gauge stations are densified through the method of average sea level transfer.This is combined with leveling survey data to determine the sea surface topography values at the tide gauge stations.Ultimately,an inverse distance weighting method is employed to develop a sea surface topography model in the coastal waters of Guangdong province.The assessment reveals that the error is better than 3.2 cm,significantly surpassing the precision levels reported in relevant literature.This model provides high reference and practical value for studies on the unification of land and sea benchmarks in Guangdong province.
关键词
海面地形/近岸海域/海面地形模型/基准验潮站/水准联测/趋势性分析/格网点内插Key words
sea surface topography/coastal waters/sea surface topography model/reference tide station/leveling survey/trend analysis/grid dot interpolation引用本文复制引用
基金项目
广东省海洋经济发展专项(粤自然资合[2022]21号)
出版年
2024
国家科技期刊平台
NSTL
万方数据