Fig. 1: Porosity with and without tensile porosity.
From: Widespread impact-generated porosity in early planetary crusts

Result of a 1 km diameter impactor into the lunar surface at 15 km/s. The logarithmic color bar on the bottom is applicable to both panels; material with 0% porosity is colored gray. Results without the tensile porosity routine or dynamic fragmentation are on the left (a) and those including them are on the right (b). White color in the figures in this paper represents void space, or vacuum. Unless otherwise stated the tensile porosity routine and the fragmentation routine are used in all simulations. It is important to note that since these simulations were ended well before the crater is settled, so the porosity distribution around the crater, particularly the floor of the crater, can change substantially. For additional comparison please see Supplementary Text 4 in our supplementary materials.