潮汐日不等显著区域深度基准面的确定研究

由于利用定义法独立求算验潮站的深度基准面对潮位观测资料、计算工具有较高的要求,并且由于潮汐调和常数存在季节变化,导致利用中、短期验潮资料求算的深度基准面稳定性不高。利用邻近验潮站传算验潮站深度基准面在海洋测绘中经常涉及,对各种传算方法的数学模型进行了分析,认为其实质均为"潮差比法"传算深度基准面,并对"潮差比法"确定深度基准面提出了改进的建议。

Research on Determining Depth Datum in Salient Regions of Diurnal Inequality

The high requirement on tidal observation data and computational tools in independently calculating the depth datum of tide gauge using the definition of law,along with the requirement on seasonal variations of tidal harmonic constants,normally results in the low stability of the depth datum calculated using medium and short term data.Instead,it is very common in marine surveys to utilize adjacent tide stations to determine depth datum.This study focuses on analyzing mathematical models of various propagation algorithms,and the results show that the essence of the models is the tidal range ratio method whose improvement is also discussed.