On the tidal variation of the geopotential |
| |
Authors: | José M Ferrándiz Juan Getino |
| |
Institution: | (1) Departamento de Matematica Aplicada a la Ingeniería, E.T.S. de Ingenieros Industriales, 47011 Valladolid, Spain;(2) Departamento de Matemática Aplicada Fundamental, Facultad de Ciencias, 47005 Valladolid, Spain |
| |
Abstract: | In this paper analytical expressions are derived for the temporal variations ofJ
2 andJ
22 due to the tides of the solid Earth, taking into account only the deformation of the mantle, and employing a procedure already used by the authors in their Hamiltonian theory of the Earth's rotation, which obtain the necessary parameters in a direct way by integration of those provided by a selected model of Earth interior.Numerical tables giving the periodic variation of coefficients are given, as well as a new prediction for UT1. For J
2 and J
22 the amplitudes reach such a magnitude that both two variations should not be ignored in studies involving the analysis of highly precise satellite tracking data. Moreover, the possibility of improving our knowledge of the value of those harmonic coefficients in only a more exact digit appears as to be strongly dependent on the limitations in the theoretical modeling of the variations of the inertia tensor due to solid tides. |
| |
Keywords: | Solid tides Earth potential artificial satellites |
本文献已被 SpringerLink 等数据库收录! |
|