Extended Data Fig. 5: Ridged bedforms with pronounced ridge-crest amplitudes are found along the T1 survey.
From: Heterogeneous melting near the Thwaites Glacier grounding line
a, Sonar-derived bathymetry from the borehole to the nearest approach made to the GL, coloured by depth (after Fig. 2, bathymetry and profiles produced with Qimera and projected in QGIS), in which boxes denote the sections shown in b and c. b,c, Close-up views showing details of two regions of the survey. Red (b) and white (c) lines denote the position of profiles found in d and e. d,e, Linear profiles of the bed topography showing that small-scale ridges formed across larger, longer-wavelength topography. f,g, Nearest the GL, 1-m, 5-m and 10-m wavelength along-flow ridges are observed.
