摘要
长江口不同时期的海图采用的深度基准面不一样 ,为充分利用诸多历史海图资料 ,需要了解历史海图深度基准面之间的关系。本文介绍了海图理论深度基准面 (前苏联弗拉基米斯基的低潮面 )的推算方法 ,用Matlab语言实现了对海图理论深度基准面的人机交互式计算。利用 1977年实测潮位资料计算获得的调和常数 ,计算了长江口 10个验潮站的深度基准面 。
Depth datum levels are of great significance to the nautical charts mapping, construction of navigation projects and navigation. Because the depth datum levels used in nautical charts vary with time, it is necessary to find the relations among depth datum levels in order to make the best use of all nautical charts. In this paper, calculation formulas of several depth datum levels, including the calculation method of theoretical depth datum (TDD) level, are carefully introduced. TDD calculation is carried out with Matlab program language. Then, the datum levels of 10 tidal stations in the Yangtze Estuary with harmonic constants calculated with tidal level data in 1977 are calculated and the relations among datum levels are discussed.
出处
《海洋工程》
CSCD
北大核心
2002年第1期69-74,共6页
The Ocean Engineering
基金
国家自然科学基金重点资助项目 ( 4 9736 2 2 0 )
高等学校博士学科点专项科研基金资助项目 ( 2 0 0 0 0 2 6 914 )
