Crater relaxation times with (a) different temperatures, (b) crater depth, (c) N₂ ice thickness, and (d) crater diameters. The benchmark case is 38 K with a crater that is initially 2 km deep, 40 km in diameter on 4 km thick ice. Each test shown in (a)–(d) varies by one parameter. The red dots and lines represent the timescale for the crater to relax to a depth of 25 m. The black curves are the relaxation times estimated from scaling analysis for τ_thin, i.e., Equations (3) and (4) in Section 2, and fitted to the numerical result.