Evaluation of global ocean tide models based on tidal gravity observations in China  

作　　者：Hongbo Tan Olivier Francis Guiju Wu Guangliang Yang Jiapei Wang Xiaotong Zhang Jinshui Huang Chongyang Shen 

机构地区：[1]School of Earth and Space Sciences,University of Science and Technology of China,Hefei,230026,China [2]Key Laboratory of Earthquake Geodesy,Institute of Seismology,China Earthquake Administration,Wuhan,430071,China [3]Faculty of Science,Technology and Communication,University of Luxembourg,Esch-sur-Alzette,L-4365,Luxembourg

出　　处：《Geodesy and Geodynamics》2021年第6期451-458,共8页大地测量与地球动力学（英文版）

基　　金：funded by The National Natural Science Foundation of China(No.41774015,41704135 and U1939204);National Key Research and Development Project of China(No.2018YFE0206100,2017YFC1500204)。

摘　　要：Previous studies show that the calculated loading effects from global ocean tide models do not match actual measurements of gravity attraction and loading effects in Southeast Asia.In this paper,taking advantage of a unique network of gravity tidal stations all over the Chinese mainland,we compare the observed and modeled tidal loading effects on the basis of the most recent global ocean tide models.The results show that the average efficiencies of the ocean tidal loading correction for O_(1),K_(1),M_(2) are 77%,7 s3%and 59%,respectively.The loading correction efficiencies using recent ocean tidal models are better than the 40 years old Schwiderskis model at coastal stations,but relative worse at stations far from ocean.

关 键 词：Gravity signals Ocean tidal loading Global ocean tide models gPhone gravimeter 

分 类 号：P312.4[天文地球—固体地球物理学]