Reconsideration of crater size-frequency distribution on the moon: effect of projectile population and secondary craters

Details Reconsideration of crater size-frequency distribution on the moon: effect of projectile population and secondary craters Reconsideration of crater size-frequency distribution on the moon: effect of projectile population and secondary craters

Jan 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001adspr..28.1181n&link_type=abstract

Advances in Space Research, Volume 28, Issue 8, p. 1181-1186.

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Scientific paper

The crater size-frequency distribution curve for the lunar surface has a bending point near 4 km in diameter. It is suggested that the steepening in the smaller diameter range is caused by the effects of secondary craters and/or size-frequency distribution of the impactors. In order to extract the fraction of the primary craters created by Near Earth Objects, among the primary-secondary mixture of km-size craters, we have examined the crater shape statistics using Clementine images of the lunar surface. We found that the size-frequency distribution of the craters with ellipticity smaller than 1.2 can be considered primary craters generated by impactors from interplanetary space.

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