Influence of topography of core-mantle boundary on Earth's nutation.

Details Influence of topography of core-mantle boundary on Earth's nutation. Influence of topography of core-mantle boundary on Earth's nutation.

Oct 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991izpse..27..177b&link_type=abstract

Izv. Acad. Sci. USSR, Phys. Solid Earth, Vol. 27, No. 3, p. 177 - 183

Physics

Earth: Nutation, Earth Core

Scientific paper

The Poincare solution is generalized by the perturbations method for the case of a slightly nonellipsoidal liquid core. The eigenfunctions of the problem are obtained in the first approximation. Corrections to the amplitudes of forced nutation are computed with allowance for the topography of the core-mantle interface. Their values for the inverse fundamental and annual nutation components considerably exceed modern observation errors, but by the introduction of these corrections it is not possible to reconcile the observed and theoretical amplitudes of forced nutation.

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