南极中山站的重力和区域海洋潮汐特征  

The Characteristics of Gravity and Regional Ocean Tides at Zhongshan Station in Antarctic

作　　者：刘清超 孙和平 王泽民[3] 陈晓东[1] 张胜凯[3] 徐建桥[1] LIU Qingchao;SUN Heping;WANG Zemin;CHEN Xiaodong;ZHANG Shengkai;XU Jianqiao(State Key Laboratory of Geodesy and Earth’s Dynamics,Institute of Geodesy and Geophysics,CAS,Wuhan 430077,China;University of Chinese Academy of Sciences,Beijing 100049,China;Chinese Antarctic Center of Surveying and Mapping,Wuhan University,Wuhan 430079,China)

机构地区：[1]中国科学院测量与地球物理研究所大地测量与地球动力学国家重点实验室,湖北武汉430077 [2]中国科学院大学,北京100049 [3]武汉大学中国南极测绘研究中心,湖北武汉430079

出　　处：《测绘学报》2018年第3期316-323,共8页Acta Geodaetica et Cartographica Sinica

基　　金：国家自然科学基金(41621091;41674083;41531069;41374084;41574072)~~

摘　　要：本文利用中山站弹簧重力仪记录的重力潮汐时间序列、验潮站数据、CATS2008区域和Eot11a全球海潮模型研究重力和海洋潮汐特征。结果表明,在周日频段,潮波O1的海潮振幅达到28 cm,4个主要潮波(Q1、O1、P1和K1)的全球模型与验潮站潮高差之和为4.2 cm,区域模型与验潮站潮高差之和为4.4 cm;在半日频段,潮波M2的海潮振幅达到20 cm,4个主要潮波(N2、M2、S2和K2)的潮高差之和分别为7.7 cm和5.1 cm,说明利用区域模型修正全球模型的重要性。经区域模型修正的全球海潮负荷改正后,重力主波K1、M2和S2的最终残差振幅分别下降了9.84%、56.14%和37.08%,说明区域海潮模型更能反映海洋潮汐的真实特征,用区域模型修正全球海潮模型的有效性得到验证。This study investigates the characteristics of gravity and ocean tides using time series recorded with the spring gravimeter and tide gauge at Zhongshan station,CATS2008 regional ocean tide model,and Eot11a global ocean tide model.The results show that the ocean tidal amplitude of O1 wave reaches 28 cm in the diurnal tidal bands.The sum of four tidals(Q1,O1,P1 and K1)difference between the global model and the tide gauge station is 4.2 cm,and that between the regional model and the tide gauge station is 4.4 cm.In contrast,the tidal amplitude of M2 wave reaches 20 cm in the semi-diurnal bands,and the sum of four tidals(N2,M2,S2 and K2)difference are 7.7 cm and 5.1 cm,respectively.This shows that correcting global ocean tide model using regional models is important.Subsequent to the correction of global oceanic loading using the regional model,the amplitudes of final residuals for the main gravity waves K1,M2,and S2 decreased by 9.84%,56.14%,and 37.08%,respectively,which indicates that the regional ocean tide model can better reflect the true characteristics of ocean tides.Moreover,the validity of correcting global ocean tide model using the regional model is verified.

关 键 词：南极 重力潮汐 区域和全球海潮模型 

分 类 号：P228[天文地球—大地测量学与测量工程]