The evolution of the rotational motion of a planet with a liquid core

Details The evolution of the rotational motion of a planet with a liquid core The evolution of the rotational motion of a planet with a liquid core

Aug 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993avest..27..119s&link_type=abstract

Astronomicheskij Vestnik (ISSN 0320-930X), vol. 27, no. 2, p. 119-127

Astronomy and Astrophysics

Astronomy

2

Evolution (Development), Planetary Cores, Planetary Mantles, Planetary Rotation, Planetology, Rotating Liquids, Bogoliubov Theory, Motion Stability, Nonconservative Forces, Obliqueness, Planetary Boundary Layer, Torque

Scientific paper

The motion of a planet composed of a liquid core and a rigid mantle is studied. It is supposed that the influence of an interaction between the mantle and the core on rotational motion is equivalent to the action of specific nonconservative torque on a frozen planet. The Bogoliubov-Mitropolskye method has been applied to obtain equations describing the secular changes in the obliquity and the rotational speed. The stability of steady motions was investigated.

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