Calculation of the tidal variations of the viscous elastic Earth's rotation with the Hamiltonian method.

Details Calculation of the tidal variations of the viscous elastic Earth's rotation with the Hamiltonian method. Calculation of the tidal variations of the viscous elastic Earth's rotation with the Hamiltonian method.

May 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998acasn..39..131x&link_type=abstract

Acta Astron. Sin., Vol. 39, No. 2, p. 131 - 140

Astronomy and Astrophysics

Astronomy

Earth Rotation: Tidal Effects, Earth Rotation: Variations

Scientific paper

Under the effect of the luni-solar tide-generating potential the Earth deforms. The viscous elasticity of its mantle causes a lag in this deformation behind the tidal force, which contributes to the secular deceleration of the Earth's rotation. The Hamiltonian method is applied to calculate the Earth's deformation. Then, taking the viscous elasticity into account, the authors calculate the secular deceleration and its effect on the periodic (zonal) variations of the Earth's rotation.

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