Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983avest..16..159s&link_type=abstract
(Astronomicheskii Vestnik, vol. 16, July-Sept. 1982, p. 159-165.) Solar System Research, vol. 16, no. 3, Jan. 1983, p. 127-132.
Astronomy and Astrophysics
Astronomy
Asymmetry, Lunar Surface, Selenology, Statistical Distributions, Surface Properties, Color, Histograms, Hypsometers, Lunar Albedo, Lunar Craters, Lunar Soil, Lunar Temperature, Radioactivity
Scientific paper
The statistical distributions of distinct surface features of the moon are considered in terms of the east-west hemispheric asymmetries. Consideration is given to measured crater diameters, elemental ratios, colors, albedos, and comparisons with global distributions. The albedo calculations were performed on the basis of a map of the surface segmented into 20,000 sections. The western albedo distribution was found to be normal, while the eastern distribution tailed off toward higher values. Higher percentages of elevations from 0 to 2-3 km reside in the western hemisphere, which also displays a trimodal hypsometric distribution. The temperature on the western limb exceeds that of the eastern limb by up to 5 K, while upland radioactivity is greater on the far side eastern hemisphere. The asymmetries are at least partially linked to the distribution of mare regions on the surface, but cannot be fully explained by that factor alone.
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