Fig. 1: Overview of Fimbulisen Ice Shelf and main findings.
From: Channelized topography amplifies melt-sensitivity of cold Antarctic ice shelves
a Map of the Fimbulisen Ice Shelf showing simulated basal melt rates for the present Fimbulisen and bottom bathymetry (thin gray lines). The cyan polygon outlines the smoothing region, where basal channels are selectively removed in the SMOOTH draft experiments. The long, thin green dashed line indicates the cross-domain transect illustrating COLD and WARM ocean forcing in c, d. The short, thick yellow line indicates a cross-section of an example basal channel illustrated in e, f. The green box indicates the deep-ice region used for focused analysis. b Averaged melt rates over the smoothing and deep-ice regions for both ROUGH and SMOOTH ice draft geometries under COLD and WARM forcing. Melt rate increases (%) in the ROUGH draft experiments relative to the SMOOTH draft are indicated above the bars. c, d Temperature cross-sections along the cross-domain transect under COLD (WARM) ocean forcing. White lines indicate the isothermal line of −1.7 ∘C, denoting the boundary between CDW and WW qualitatively. GL denotes grounding line. Cross-channel (west to east) temperature sections through the example channel under COLD (e) and WARM (f) forcing. White solid (dashed) lines indicate along-channel outflows (return flows) in cm s−1. Colored-filled dots indicate melt rates along the cross-section.
