Articles | Volume 11, issue 1
Research article
14 Feb 2020
Research article |  | 14 Feb 2020

Asthenospheric anelasticity effects on ocean tide loading around the East China Sea observed with GPS

Junjie Wang, Nigel T. Penna, Peter J. Clarke, and Machiel S. Bos

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Cited articles

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Agnew, D. C.: SPOTL: Some Programs for Ocean-Tide Loading, available at: (last access: 7 February 2020), 2013. 
Allinson, C. R., Clarke, P. J., Edwards, S. J., King, M. A., Baker, T. F., and Cruddace, P. R.: Stability of direct GPS estimates of ocean tide loading, Geophys. Res. Lett., 31, L15603,, 2004. 
Baker, T. F. and Bos, M. S.: Validating Earth and ocean tide models using tidal gravity measurements, Geophys. J. Int., 152, 468–485,, 2003. 
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Short summary
Changes in the Earth's elastic strength at increasing timescales of deformation affect predictions of its response to the shifting weight of the oceans caused by tides. We show that these changes are detectable using GPS and must be accounted for but that 3-D or locally-tuned models of the Earth's behaviour around the East China Sea provide only slightly better predictions than a simpler model which varies only with depth. Use of this model worldwide will improve precise positioning by GPS.