PtyS/LPL
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This is a short routine to evaluate the scaling equations to determine the diameter of a crater given details on the nature of the projectile, conditions of impact, and state of the target. The transient crater diameter is evaluated by three independent methods, yield scaling, pi-scaling and Gault's semi-empirical relations supplemented by rules on how crater size depends on gravity and angle of impact.
See Melosh, Impact Cratering, chapter 7 for more details
Copyright 1996, 1997 and 1998 by H. J. Melosh
