Planetary cratering mechanics

Details Planetary cratering mechanics Planetary cratering mechanics

Feb 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992stin...9218810o&link_type=abstract

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Computer Science

Cratering, Flow Distribution, Impact Damage, Planetary Craters, Planetary Gravitation, Impactors, Mechanical Properties, Radii, Thermodynamic Properties

Scientific paper

To obtain a quantitative understanding of the cratering process over a broad range of conditions, we have numerically computed the evolution of impact induced flow fields and calculated the time histories of the major measures of crater geometry (e.g., depth diameter, lip height ...) for variations in planetary gravity (0 to 10 exp 9 cm/sq seconds), material strength (0 to 140 kbar), thermodynamic properties, and impactor radius (0.05 to 5000 km). These results were fit into the framework of the scaling relations of Holsapple and Schmidt (1987). We describe the impact process in terms of four regimes: (1) penetration; (2) inertial; (3) terminal; and (4) relaxation.

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