基于T_TIDE的江苏沿海潮汐特性分析  

Analysis of tidal characteristics along Jiangsu coast based on T_TIDE

作　　者：赵一飞 张勇发 邓增安 于婷[4] ZHAO Yi-fei;ZHANG Yong-fa;DENG Zeng-an;YU Ting(Tianjin Port Engineering Institute Co.,Ltd.of CCCC First Harbor Engineering Co.,Ltd.,Tianjin 300222,China;CCCC First Harbor Engineering Co.,Ltd.,Tianjin 300461,China;School of Marine Science and Technology,Tianjin University,Tianjin 300072,China;National Marine Data Information Center,Tianjin 300171,China)

机构地区：[1]中交天津港湾工程研究院有限公司,天津300222 [2]中交第一航务工程局有限公司,天津300461 [3]天津大学海洋科学与技术学院,天津300072 [4]国家海洋信息中心,天津300171

出　　处：《中国港湾建设》2023年第7期6-10,共5页China Harbour Engineering

基　　金：国家自然科学基金(42176020)。

摘　　要：文中介绍了基于经典调和分析原理的潮汐预报工具———T_TIDE,利用T_TIDE对实测潮汐资料进行调和分析及预报,研究了江苏沿海吕泗验潮站(LSI站)和连云港验潮站(LYG站)的潮汐特征。结果表明,T_TIDE在江苏沿海潮汐预报中精度较高,可为沿海工程提供任意时段的潮汐预报服务,并为施工窗口期的选择提供理论支撑。M2分潮是LSI站和LYG站的主要分潮,2个站点的潮汐类型都是半日潮。1998—2012年间,LSI站的M2分潮振幅呈上升趋势。在LYG站,1995—2001年间M2分潮的振幅逐渐减小,2001—2012年间M2的振幅逐渐增大。在LSI站和LYG站,迟角都有明显的下降趋势。对2个验潮站的海平面变化进行了研究,结果表明,LSI站和LYG站的海平面分别呈现上升趋势和下降趋势。In this paper,a tide forecasting tool called T_TIDE based on the classical harmonic analysis is introduced.The measured tide data are harmonically analyzed and tide forecasting was made by using the T_TIDE and the characteristics of tides at Lusi Tide Station(LSI Station)and Lianyungang Tide Station(LYG station)along Jiangsu coast are studied.The results show that the accuracy of T_TIDE in tidal prediction of Jiangsu coastal tides is highly satisfactory,which can provide tidal forecasting service and theoretical support for selection of the window period for coastal construction.M2 is the main tidal constituent at both LSI station and LYG station.The type of tides at both stations is all semi-diurnal.At LSI station,the amplitude of M2 presents an upward trend from 1998 to 2012 while at LYG station,the amplitude of M2 gradually decreased between 1995 and 2001 and increased between 2001 and 2012.Whereas,the phase-lag shows a significant downward trend at both LSI station and LYG station.Sea level changes at the two stations are also studied and the statistical results illustrate that the sea levels at LSI station and LYG station present an increasing trend and a decreasing trend,respectively.

关 键 词：潮汐特性 调和分析 潮汐预报 T_TIDE M2分潮 

分 类 号：U652.3[交通运输工程—港口、海岸及近海工程] P731.23[交通运输工程—船舶与海洋工程]