Physics – Geophysics
Scientific paper
Jul 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978jgr....83.3497b&link_type=abstract
Journal of Geophysical Research, vol. 83, July 10, 1978, p. 3497-3508.
Physics
Geophysics
27
Geophysics, Harmonic Analysis, Mars Surface, Planetary Gravitation, Planetary Structure, Topography, Bouguer Law, Planetary Cores, Planetary Mantles, Planetary Mapping, Mars, Topography, Harmonics, Model, Radar, Spectrum, Occultation, Gravity Anomalies, Geophysics, Photogrammetry
Scientific paper
The paper describes an improved model of Martian global topography which has been obtained by fitting a sixteenth-degree harmonic series to occultation, radar, spectral, and photogrammetric measurements. Empirical elevation data based on photographic data are used to supplement the observations in areas without data. Values for the mean radius, the mean density, and the displacement of the center of the figure from the center of mass are presented. The reported geometric flattening is too great and the reported dynamic flattening is too small for Mars to be homogeneous and hydrostatic. Maps of the data distribution, global topography, and Bouguer gravity anomaly are interpreted in terms of a crustal thickness map which is consistent with gravity, topography, and recent preliminary Viking seismic results.
Bill B. C.
Ferrari Agnaldo José
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