Experimental evidence for non-proportional growth of large craters

Details Experimental evidence for non-proportional growth of large craters Experimental evidence for non-proportional growth of large craters

May 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987pggp.rept..394s&link_type=abstract

In NASA, Washington, Reports of Planetary Geology and Geophysics Program, 1986 p 394-395 (SEE N87-23341 16-91)

Physics

Geophysics

Aspect Ratio, Craters, Gravitational Effects, Hypervelocity Impact, Impactors, Mass Distribution, Deformation, Depth, Diameters, Flow Distribution, Projectile Cratering, Velocity

Scientific paper

Evidence from laboratory impact experiments is indicating that increasing crater aspect ratios (diameter:depth) can result from increasing both velocity and projectile size without invoking unusual impactor conditions. An extensive data base of experimental impact cratering was analyzed for a variety of impactors and impact velocities for low strength targets. These data indicate a change in cratering efficiency that appears to be related to the onset of projectile deformation or rupture. When all projectile types and sizes are considered, one finds two contrasting relationships between crater aspect ratio and impactor parameter. These relationships are briefly considered.

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