中国南海北部潮汐主要分潮的变化趋势分析  

Variation Trends of Major Tidal Constituents Along the Northern Coast of the South China Sea

作　　者：付延光 周兴华[1,2] 杨磊[2] 周东旭[1] 孙维康[1] 

机构地区：[1]山东科技大学测绘科学与工程学院,山东青岛266510 [2]国家海洋局第一海洋研究所,山东青岛266061

出　　处：《海洋测绘》2015年第1期14-17,共4页Hydrographic Surveying and Charting

摘　　要：基于中国南海北部6个长期验潮站逐时水位资料,对该海域O1、K1、M2和S2的4个主要分潮的振幅和迟角变化趋势分别进行分析。结果表明：各验潮站的O1、K1和M2分潮振幅呈现显著的周期性变化,S2分潮振幅年变化量基本在毫米级,具有较高的稳定性。厦门站1954~1997年期间的M2分潮振幅存在18.98年的周期变化,与交点潮18.61年的变化周期相吻合。基于最小二乘原理,通过曲线拟合方式能够对主要分潮振幅在一定时间内进行比较准确的预报。The variation trends of the amplitude and phase of the main constituents including O1、K1、M2and S2 are analyzed on the basis of the data from six long term gauges in the northern part of the South China Sea. The harmonic analysis result indicates that the tide types is complicated,which includes diurnal tides,mixed tides and semidiurnal tides. The amplitude and phase of O1,K1 and M2has significant periodic variation. The amplitude of S2 is in millimeter level,and it is more stable; The yearly harmonic analysis of amplitude of M2 is obtained from Xiamen station from 1954-1997. The period of the amplitude is 18. 98 years,and it coincides with the period of the nodal tide,which is 18. 61 years. Based on the principle of the least squares,we can forecast the main constituents＇ amplitude accurately at a certain time by curve fitting.

关 键 词：海洋测量 调和分析 变化趋势 中国南海 T_TIDE 

分 类 号：P229[天文地球—大地测量学与测量工程]