Fig. 2: Total basal melt rates and the resulting flux.
From: A first constraint on basal melt-water production of the Greenland ice sheet

a Basal melt rates. Pie charts show the contribution from the different heat terms: friction heat (F, blue), geothermal flux (G, black) and viscous heat dissipation from surface melt water (S, grey). Size of circles indicate the total basal melt discharge from each sector. b Flux of basal melt water. Numbers show the total basal melt discharge for each sector.