Fig. 1: Map of the Amundsen Sea Sector showing ice shelf basal melting and the active subglacial lakes network. | Nature Communications

Fig. 1: Map of the Amundsen Sea Sector showing ice shelf basal melting and the active subglacial lakes network.

From: The influence of subglacial lake discharge on Thwaites Glacier ice-shelf melting and grounding-line retreat

Fig. 1

a Map showing the location of ice drainage basins, ice shelves, Thwaites’s subglacial hydrology, polynya, and hydrographic moorings in front of Pine Island ice shelf. Basemap is a MODIS image acquired on the 5th of January 2014 during the polynya formation. The ice shelf colours display the amplitude of basal melt change during 2013–2014 coincident with the basal melt pulse at Thwaites, the ice shelf extent corresponds to the minimum for the 2011–2021 period accounting for calving front and grounding line variation36. Inset shows sector location within the Antarctic Ice Sheet (b) Mean basal melt rate under Thwaites Eastern Ice Shelf (TEIS) and near the grounding line of Thwaites Western Ice Tongue (TWITgl) between 2010 and 2020, the area of thinning and retreat at the grounding line is labelled “2013 ungrounding”; c Sensitivity of the grounded ice to changes in the Thwaites floating ice (see Methods)64. Source data are provided as a Source Data file.

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