摘要
The response of radial inhomogeneous elastic earth under the action of oceanic tides is studied by use of the combination of convolution integral with spherical harmonic expansion. In the meantime, the effect of oceanic tides on gravity, tilt and strain in the mainland of China is estimated, and the accuracy of loading correction is also briefly analysed. Results show that the loading effect along the coast of China cannot be neglected, for gravity it is about 5％ of body tides, for tilt it reaches the same magnitude as body tides, for strain about 50％. The result obtained can be used to provide the tidal correction for various precision geodesy. The proposal method may also be applied to the effect of other surface loading except oceanic tides.
The response of radial inhomogeneous elastic earth under the action of oceanic tides is studied by use of the combination of convolution integral with spherical harmonic expansion. In the meantime, the effect of oceanic tides on gravity, tilt and strain in the mainland of China is estimated, and the accuracy of loading correction is also briefly analysed. Results show that the loading effect along the coast of China cannot be neglected, for gravity it is about 5％ of body tides, for tilt it reaches the same magnitude as body tides, for strain about 50％. The result obtained can be used to provide the tidal correction for various precision geodesy. The proposal method may also be applied to the effect of other surface loading except oceanic tides.
