Citation

Zhou JC, Sun HP. Acta Seismol. Sin. Engl. Ed. 2005; 18(3): 354-360.

Affiliation

Key Laboratory of Dynamical Geodesy, Institute of Geodesy and Geophysics, Chinese Academy of Sciences, Wuhan 430077, China

Copyright

(Copyright © 2005, Seismological Society of China, Publisher Holtzbrinck Springer Nature Publishing Group)

DOI

unavailable

PMID

unavailable

Abstract

By using 11 global ocean tide models and tidal gauge data obtained in the East China Sea and South China Sea, the influence of the ocean loading on gravity field in China and its neighbor area is calculated in this paper. Furthermore, the differences between the results from original global models and modified models with local tides are discussed based on above calculation. The comparison shows that the differences at the position near the sea are so large that the local tides must be taken into account in the calculation. When the global ocean tide models of CSR4.0, FES02, GOT00, NAO99 and ORI96 are chosen, the local effect for Msub-2 is less than 0.10 times 10 sup-8 m-s sup-2 over the area far away from sea. And the local effect for O sub 1 is less than 0.05 times 10 sup -8 m-s sup-2 over that area when choosing AG95 or CSR3.0 models. This numerical result demonstrates that the choice of model is a complex problem because of the inconsistent accuracy of the models over the areas of East and South China Seas.

10.1007/s11589-003-0047-0