Fig. 3: Simulations of thermal conditions downstream of the lake basin edge for different geometric and geothermal heat flux scenarios.
From: Outburst of a subglacial flood from the surface of the Greenland Ice Sheet
a, Simulated temperature field, T(y, z), for a vertical section through the ice, for a high-end scenario (ice thickness = 300 m and geothermal heat flux = 0.07 W m−2). b, Basal temperature, Tb, at the fracture site as a function of ice thickness and geothermal heat flux. The coloured circles correspond to the parameter choices for the experiments reported in c. c, Temperature profiles at the fracture site for four experiments exploring combinations of H = 50 m, 300 m and G = 0.03, 0.07 W m−2. The black solid and dashed curves plot the corresponding temperature boundary conditions at the edge of the lake basin, for H = 300 m and H = 50 m, respectively, which are defined as a parabolic vertical temperature profile to account for the proximity of the subglacial lake.
