The post-seismic component of displacement U′_x along the line x′ = 0.0 for fault lengths: (a), (d) and (g) W′ = 0.4, (b), (e) and (h) W′ = 1.0 and (c), (f) and (i) W′ = 2.0. Depth extent of faults: (a), (b) and (c) D′ = H′ = 0.1, (d), (e) and (f) D′ = H′ = 0.2 and (g), (h) and (i) D′ = H′ = 0.3. In each case c = 0.0, 2.0, 5.0 and 8.0.