Physics
Scientific paper
Mar 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993lpi....24.1317s&link_type=abstract
In Lunar and Planetary Inst., Twenty-Fourth Lunar and Planetary Science Conference. Part 3: N-Z p 1317-1318 (SEE N94-20636 05-91
Physics
Doppler Radar, Gravitational Fields, Mariner 9 Space Probe, Mars (Planet), Planetary Geology, Radar Tracking, Spatial Resolution, Viking Mars Program, Gravitation, Landforms, Lithosphere, Mars Surface, Topography
Scientific paper
Knowledge of the gravitational field, in combination with surface topography, provides one of the principal means of inferring the internal structure of a planetary body. The highest resolution gravitational field for Mars published thus far was derived from Doppler tracking data from the Mariner 9 and Viking 1 and 2 spacecraft and is complete to degree and order 18 corresponding to a half wavelength resolution of approximately 600 km. This field, which is characterized by a spatial resolution that is slightly better than that of the highest resolution (16x16) topographic model, has been utilized extensively in analyses of the state of stress and isostatic compensation of the Martian lithosphere. However, the resolution and quality of current gravity and topographic fields are such that the origin and evolution of even the major physiographic features on Mars, such as the hemispheric dichotomy and Tharsis rise, are not well understood. We have re-analyzed the Viking and Mariner data sets and have derived a new gravitational field, which we designated GMM-1 (Goddard Mars Model-1). This model is complete to spherical harmonic degree and order 50 with a corresponding (half wavelength) spatial resolution of 200-300 km where the data permit. In contrast to previous models, GMM-1 was solved to as high degree and order as necessary to nearly exhaust the attenuated gravitational signal contained in the tracking data.
Fricke Susan K.
Lemoine Frank G.
Lerch F. J.
Nerem Steven R.
Patel G. B.
No associations
LandOfFree
GMM-1: A 50 degree and order gravitational field model for Mars does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with GMM-1: A 50 degree and order gravitational field model for Mars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and GMM-1: A 50 degree and order gravitational field model for Mars will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1450594