Basin-ring spacing on the moon, Mercury, and Mars

Details Basin-ring spacing on the moon, Mercury, and Mars Basin-ring spacing on the moon, Mercury, and Mars

Oct 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987em%26p...39..129p&link_type=abstract

Earth, Moon, and Planets (ISSN 0167-9295), vol. 39, Oct. 1987, p. 129-194.

Physics

61

Lunar Surface, Mars Surface, Mercury Surface, Meteorite Craters, Planetary Structure, Structural Basins, Ring Structures, Topography

Scientific paper

Radial spacing between concentric rings of impact basins that lack central peaks is statistically similar and nonrandom on the Moon, Mercury, and Mars, both inside and outside the main ring. One spacing interval, (2.0±0.3)0.5D, or an integer multiple of it, dominates most basin rings. Three analytical approaches yield similar results from 296 remapped or newly mapped rings of 67 multi-ringed basins: least-squares of rank-grouped rings, least-squares of rank and ring diameter for each basin, and averaged ratios of adjacent rings. The statistically constant and target-invariant spacing of so many rings suggests that this characteristic may constrain formational models of impact basins on the terrestrial planets. It is suggested that some type of wave mechanism dominates the location, but not necessarily the formation, of basin rings. The waves may be standing, rather than travelling.

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