Fig. 3: Cross-sections and resolution test results.
Profile locations are shown in Fig. 2. In (a)–(c), the top panels show subglacial bedrock topography (black line) and ice coverage (blue)21. The bold horizontal line denotes sea-level, and thin gray lines denote intervals of 1 km. Geographic labels are the same as in Fig. 1. The middle panels show the model results along the profiles, where distance is in degrees, depth is in kilometers, and VS are relative to the AK135 global average Earth model52. The bottom panels are our best-fit synthetic resolution test results, which are plotted in a similar manner to the middle panels, but the thin black lines denote the vertical grid used in the inversion. Roman numerals denote anomalies discussed in the text. The dashed line in (b) marks the interpreted base of the WSB lithospheric lid.
