不同期验潮数据用于余水位差分水位推算的可行性分析

利用中短期验潮资料调和分析获得11个主要分潮的调和常数实现水位推算的方法,已在海洋测绘、疏浚工程测量等领域得到推广。但不进行全部站点的同步验潮测量,仅收集不同期历史验潮数据进行分析,获得的潮汐调和常数难以满足水深测量水位改正的精度要求。提出2种调和常数优化方法,通过增强不同期验潮数据调和常数的相关性,提高水位推算的精度,并以实例验证不同期验潮数据用于余水位差分水位推算的可行性。

Feasibility analysis of residual sea level calculation from data in different tidal level period

The method of tidal level calculation,with 11 major tidal constituents obtained from the mid tide data harmonic,is promoted in the field of marine surveying and mapping,surveying for dredging and other areas.However,historical tide data of different periods are collected to analysis without tidal synobservation measurement of all stations,and the tide harmonic constant can not meet the precision requirement of water depth correction.By enhancing the correlation of the harmonic constants of the tidal data at different periods to improve the accuracy of tidal level calculation,we propose two harmonic constants optimization methods,and demonstrate the feasibility of residual sea level calculation from the date in different tidal level period in the cases.