Fig. 1: Schematic figure of GIA feedback on grounding line migration.
From: Bedrock uplift reduces Antarctic sea-level contribution over next centuries
The solid purple and brown lines represent the initial ice sheet/shelf and lithosphere, respectively. The lower solid brown line separates the elastic lithosphere and the viscoelastic mantle. The solid and dashed blue lines represent sea level before and after ice sheet melt and GIA, respectively. p1 is the initial grounding line position. The dashed purple line represents the ice sheet/shelf after retreat, while the dashed brown lines are the perturbed mantle elevation and bedrock surface. p is the expected grounding line position after retreat without considering any GIA effects. p2 is the grounding line position, including the GIA response. h1 is the initial surface elevation, h the surface elevation without GIA effects and h2 the surface elevation after the GIA response. Bedrock slope, λ, changes from λ1 to λ2 due to the bedrock response. b1 and s1 are the water depth and sea level, respectively, before GIA, while b2 and s2 are their counterparts after GIA. Modified from van Calcar et al.45.
