江苏近岸海域水位变化特征分析  

Analysis on sea level variability along the coast of Jiangsu Province

作　　者：何佩东 邬惠明[1] 曹兵[1] 高清清[1] 徐常三[1] HE Pei-dong;WU Hui-ming;CAO Bing;GAO Qing-qing;XU Chang-san(Nantong Marine Environmental Monitoring Center,Nantong 226000 China)

机构地区：[1]国家海洋局南通海洋环境监测中心站,江苏南通226000

出　　处：《海洋预报》2020年第2期54-59,共6页Marine Forecasts

基　　金：国家海洋局东海分局青年科技基金(201626)。

摘　　要：基于江苏沿海连云港、吕四两个测点的验潮站多年的观测资料以及AVISO卫星高度计资料,利用统计分析方法和潮汐调和分析方法研究江苏沿海地区的海洋水位变化特征。结果表明:江苏沿海海平面和潮差均呈上升趋势,海平面上升速度达3.35 mm/a,高于全球和区域海平面的上升速度;对采样间隔为1 h的潮位连续观测数据作调和分析,各验潮站主要半日分潮的振幅呈上升趋势,全日分潮的振幅呈下降趋势,S_a分潮的周期性变化与El Nino现象有关。The sea level variability along the coast of Jiangsu province were studied based on the long-term observed data from Lianyungang and Lvsi tidal stations.The results indicate that the long-term trends of the relative mean sea level change and the mean tidal range change are 3.35 mm/a and 4.01 mm/a,respectively.That are greater than the speed of global and area sea level rise.The harmonic tidal constants of principle semidiurnal constituent show rising trends and the diurnal tides are decreasing.The periodical change of Sa constituent has large correlation with the events of El Nino.

关 键 词：海平面 潮差变化 调和分析 

分 类 号：P731.23[天文地球—海洋科学]