Sensitivity of the Free Core Nutation and the Chandler Wobble to changes in the interior structure of Mars

Details Sensitivity of the Free Core Nutation and the Chandler Wobble to changes in the interior structure of Mars Sensitivity of the Free Core Nutation and the Chandler Wobble to changes in the interior structure of Mars

Jan 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000pepi..117..397v&link_type=abstract

Physics of the Earth and Planetary Interiors, Volume 117, Issue 1-4, p. 397-405.

Physics

20

Scientific paper

In view of the forthcoming Mars missions with seismological and geodetic experiments on board, the sensitivity of Mars' normal modes to interior structure changes is examined. The emphasis is put on the Chandler Wobble (CW) and the Free Core Nutation (FCN), as both can play an important role in the nutations and tides of Mars. The FCN, especially, is found to have a large potential for inferring properties of the interior structure of Mars. If observed, it will prove that Mars contains a liquid core, and information about the core radius and density jump at the Core-Mantle Boundary (CMB) can be obtained. Spheroidal oscillation modes of Mars are also shown to provide a powerful and additional constraint on the Martian interior.

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