基于深海锚系潜标的潮汐特征计算方法

摘要

For the difficulty of getting tidal characteristics in deep sea, a new model for the calculation of sea level was founded. It was based on the data of pressure sensor from mooring stations using the method of linear approxi-mation, and further error analysis was also made to the model. Using data from the mooring station in the central South China Sea, the sea level change was successfully obtained. The tidal type ( irregular diurnal) , amplitude and phase lag of the main constituents( K1、O1、M2 ) were then calculated by T-TIDE function. They were basically the same with previous studies in this region, which was calculated by satellite altimeter data or numerical simulation. All this suggested that this model can be a new method for tidal analysis in deep sea.%针对深海潮汐特征难以获取的困难，基于深海锚系潜标压力传感器所测资料，利用线性近似的方法，建立了海面水位变化计算模型，并对该模型进行计算误差分析，提供了模型计算精度判别方法。基于该模型，利用南海中部海区深海锚系实测压力资料获取了锚系点的海面水位数据，并采用T-TIDE潮汐调和分析函数处理水位数据，获取了该海区的潮汐调和常数，对该海区的潮汐特征进行了验证与分析。所得潮汐类型为不规则日潮，主要(半)日分潮K1、O1、M2的振幅和迟角，均与前人利用卫星高度计资料和数值模拟分析结果基本一致。