The Effect of Zonal Tides on the Dynamical Ellipticity of the Earth and its Influence on the Nutation

Details The Effect of Zonal Tides on the Dynamical Ellipticity of the Earth and its Influence on the Nutation The Effect of Zonal Tides on the Dynamical Ellipticity of the Earth and its Influence on the Nutation

Oct 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998em%26p...81..201s&link_type=abstract

Earth, Moon, and Planets, v. 81, Issue 3, p. 201-216 (2000).

Physics

7

Dynamical Ellipticity, Earth'S Rotation, Nutation, Tides

Scientific paper

In this paper, the expressions of variations of the dynamical ellipticity and the principal moments of inertia due to the deformations produced by the zonal part of the tidal potential are obtained. Starting from these expressions, we have studied from equations related to Hamiltonian theory, their effects on the nutation and finally we have evaluated numerically such influences, with a level of truncation at 0.1 μas. Thus we have shown that some coefficients are quite large with respect to the usual accuracy of up-to-date observations.

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