Distributions of boulders ejected from lunar craters

Details Distributions of boulders ejected from lunar craters Distributions of boulders ejected from lunar craters

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010icar..209..337b&link_type=abstract

Icarus, Volume 209, Issue 2, p. 337-357.

Computer Science

11

Scientific paper

We investigate the spatial distributions of boulders ejected from 18 lunar impact craters that are hundreds of meters in diameter. To accomplish this goal, we measured the diameters of 13,955 ejected boulders and the distance of each boulder from the crater center. Using the boulder distances, we calculated ejection velocities for the boulders. We compare these data with previously published data on larger craters and use this information to determine how boulder ejection velocity scales with crater diameter. We also measured regolith depths in the areas surrounding many of the craters, for comparison with the boulder distributions. These results contribute to understanding boulder ejection velocities, to determining whether there is a relationship between the quantity of ejected boulders and lunar regolith depths, and to understanding the distributions of secondary craters in the Solar System. Understanding distributions of blocky ejecta is an important consideration for landing site selection on both the Moon and Mars.

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