Regolith evolution in the laboratory - Scaling dissimilar comminution experiments

Details Regolith evolution in the laboratory - Scaling dissimilar comminution experiments Regolith evolution in the laboratory - Scaling dissimilar comminution experiments

Mar 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990metic..25...27c&link_type=abstract

Meteoritics (ISSN 0026-1114), vol. 25, March 1990, p. 27-40.

Computer Science

Sound

5

Hypervelocity Impact, Planetary Surfaces, Regolith, Fragments, Lunar Evolution, Meteoritic Composition, Rock Mechanics, Planets, Regolith, Evolution, Laboratory Studies, Experiments, Size, Scaling, Simulations, Impacts, Surface, Parameters, Mass, Density, Velocity, Analogs, Crystals, Procedure, Analysis, Techniques, Data, Atmosphereless Bodies, Calculations

Scientific paper

Repeated impacts into fragmental targets simulating unconsolidated debris on planetary surfaces have provided empirical insight into the evolution of planetary regoliths. The techniques of dimensional analysis have been employed to quantify and examine the relationships between the more important variables in the evolution of these experimental regoliths. Application of this method to the results of 10 experimental series shows that the quantity of comminuted target mass is directly proportional to (1) the number of impacts, (2) the diameter of the projectile, (3) the mean size of the crystals, (4) the mean grain size of the evolving regolith, (5) the total target mass, (6) the impactor density, and (7) the ratio of the impact velocity to the velocity of sound in the target rock. The comminuted mass is inversely proportional to the density of the target rock and the sorting of the regolith.

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