Lunar Crustal Modeling of Mare Orientale from Clementine Satellite Observations

Details Lunar Crustal Modeling of Mare Orientale from Clementine Satellite Observations Lunar Crustal Modeling of Mare Orientale from Clementine Satellite Observations

Mar 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996lpi....27.1363v&link_type=abstract

Lunar and Planetary Science, volume 27, page 1363

Computer Science

1

Clementine, Crust, Gravity, Mare Orientale, Topography

Scientific paper

Clementine satellite gravity and altimetry observations were analyzed in lunar spherical coordinates for density variations that may be related to the crustal features and evolution of Mare Orientale. The analysis considered 2-degree gridded free-air gravity anomaly and LIDAR topographic estimates for a 68-degree by 68-degree region of the moon centered roughly on Mare Orientale. At this scale of coverage, the gravity anomalies appear to be dominated almost completely by crustal density variations related to surface topography, crustal isostasy, mantle topography, and meteorite impact. The topography of the study region includes over 11 km of relief, the gravity effect of which we modeled in lunar spherical coordinates by Gauss-Legendre quadrature integration assuming a topographic density of 2.8 g/cc. We observed substantial positive and negative correlations between the free-air and topographic gravity anomalies that seriously limit the utility of simple Bouguer gravity anomalies for lunar subsurface studies. Using the wavenumber correlation spectrum between the free-air and topographic gravity anomalies, we designed correlation filters to extract the the correlative anomalies in the two data sets.

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