Lunar gravity determinations and their implications

Details Lunar gravity determinations and their implications Lunar gravity determinations and their implications

Mar 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977rspta.285..219s&link_type=abstract

(Royal Society, Discussion on the Moon - A New Appraisal from Space Missions and Laboratory Analyses, London, England, June 9-12

Physics

3

Gravity Anomalies, Lunar Craters, Lunar Gravitation, Mascons, Mass Distribution, Density Distribution, Lunar Evolution, Lunar Far Side, Lunar Maria, Lunar Topography, Radial Distribution, Radio Tracking

Scientific paper

Mass distributions inferred from lunar gravity data are studied, with emphasis on mascons as mass excesses in topographic lows in all the near-side ringed basins, with best representation as near-surface disks with excess loads of 800 kg per sq cm. The gravity data are derived from earth-based radiometric data on speed variations of orbiting Apollo spacecraft observed from the earth. Mass deficits are found in the case of large 100 km craters (Langrenus, Theophilus, Copernicus), and are consistent with crater volume. Earlier states of the moon are hypothesized on the basis of the small gravitational anomaly associated with the Apennine mountains, and on the basis of lunar isostasy, plasticity, and maria flooding and filling.

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