Determination of the depth of cracking

crack.sce determines the depth of cracking inside the rocky core of an icy planetary body based on a time-dependent input of 1-D temperature and composition profiles, kbo.dat.
crack.sce can easily be modified to accommodate a time-independent input of temperature and pressure, for example, or different geometries, number of shells, or time intervals. The only necessary inputs are temperature, size of the rocky core, and pressure (or composition).