Physics
Scientific paper
May 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993jgr....98.9113m&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 98, no. E5, p. 9113-9128.
Physics
15
Gravitational Fields, Mathematical Models, Topography, Venus (Planet), Altimetry, Data Reduction, Harmonic Analysis, Legendre Functions, Spatial Resolution, Validity, Venus, Gravity Properties, Topography, Spacecraft Observations, Model, Magellan Mission, Composition, Harmonics, Altimetry, Calculations, Analysis, Doppler Methods, Geometry, Statistical Methods, Anomalies, Data Reduction, Compensation
Scientific paper
A new gravity field determination that has been produced combines both the Pioneer Venus Orbiter (PVO) and the Magellan Doppler radio data. Comparisons between this estimate, a spherical harmonic model of degree and order 21, and previous models show that significant improvements have been made. Results are displayed as gravity contours overlaying a topographic map. We also calculate a new spherical harmonic model of topography based on Magellan altimetry, with PVO altimetry included where gaps exist in the Magellan data. This model is also of degree and order 21, so in conjunction with the gravity model, Bouguer and isostatic anomaly maps can be produced. These results are very consistent with previous results, but reveal more spatial resolution in the higher latitudes.
Borderies N. J.
McNamee John B.
Sjogren William L.
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