Extended Data Fig. 4: Exposed coastal fragments of flat surfaces in East Antarctica.
From: Extensive fluvial surfaces at the East Antarctic margin have modulated ice-sheet evolution
(a) Bed elevation of the exposed Vestfold Hills and contiguous subglacial flat surface. (b) Profile of ice surface (black) and bed (red) elevation across the Vestfold Hills along profile X–X’ (location shown in panel a). Bed elevation was derived from ICECAP RES survey line IR2HI2_2012327_ICP5_JKB2h_F07T02a; ice surface and land elevation were derived from the Reference Elevation Model of Antarctica (REMA)26. (c) Hillshaded REMA topography of the Vestfold Hills. Contour interval is 50 metres. (d) Sentinel-2b Level-1C imagery of the Vestfold Hills (image extent marked in panel a) acquired on 30th January 2024. (e) Bed elevation of the exposed Bunger Hills and contiguous subglacial flat surface. (f) Profile of ice surface (black) and bed (red) elevation across the Bunger Hills along profile Y–Y’ (location shown in panel e). Bed elevation was derived from ICECAP RES survey line IR2HI2_2011002_ASB_JKB2d_GL0152a; ice surface and land elevation were derived from REMA. (g) Hillshaded REMA topography of the Bunger Hills. Contour interval is 50 metres (panel extent marked in panel h). (h) Sentinel-2b Level-1C imagery of the Bunger Hills (image extent marked in panel e) acquired on 9th March 2023.
