The gravity field of Mars

Details The gravity field of Mars The gravity field of Mars

Mar 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975georl...2...89r&link_type=abstract

Geophysical Research Letters, vol. 2, Mar. 1975, p. 89-92.

Physics

2

Mars (Planet), Planetary Gravitation, Potential Fields, Radio Tracking, Spherical Harmonics, Equipotentials, Gravitation Theory, Mariner 9 Space Probe, Mathematical Models

Scientific paper

A complete sixth-degree spherical-harmonic model of the gravitational potential of Mars has been produced from an analysis of Doppler data obtained from the radio tracking of the Mariner-9 spacecraft for over 200 orbital revolutions. The equipotential surface defined by this model is estimated to be accurate to within 100 m below 60 deg north latitude and to within 300 m above. The dominant feature of this surface is a Tharsis-related bulge which rises nearly two kilometers above the surrounding areas. Gravitational 'lows' are found to correspond to the Hellas depression and the Valles Marineris.

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