Mars Polar motion excitation.

Details Mars Polar motion excitation. Mars Polar motion excitation.

Dec 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003agufm.g42c..07d&link_type=abstract

American Geophysical Union, Fall Meeting 2003, abstract #G42C-07

Physics

1239 Rotational Variations, 5450 Orbital And Rotational Dynamics, 5724 Interiors (8147), 8147 Planetary Interiors (5430, 5724)

Scientific paper

The planet Mars is ellipsoidal and has most probably a liquid outer core. The existence of a solid inner part in the core is questionable. We compute the atmospheric excitation of the Chandler Wobble and of the possible Inner Core Wobble. The atmosphere and ice caps of Mars excite these free modes. We examine whether they are excited to an observable level in future geodetic measurements of polar motion. We have developed a theoretical approach to compute polar motion in response to the excitation of atmosphere and polar caps calculated from the output of a global circulation model.

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