Results from an identical setup as in Figure 3A but for double elevation of the basins (double base level fall: 1600 m). (A) Topography; (B) cross section; (C) isostatic rebound and subsidence in response to surface mass transport (contours) and sediment thickness; sedimentation/erosion rates (D) and river profiles with knickpoint location for the Duero (E) and Ebro (F) river networks. Note the more pronounced erosion, integration, and uplift of both basins, relative to the results for the reference model in Figure 3.