Extended Data Fig. 2: Plan view of the three ROV Icefin missions and orientation relative to prior surveys and the approximate grounding line.
From: Crevasse refreezing and signatures of retreat observed at Kamb Ice Stream grounding zone
a,b, Inset map (b) ice velocities are from MEaSUREs64, and the upper panel (a) corresponds to the area below the KIS1 2019 camp icon. c, A further zoom in on the ROV Icefin survey track (blue shaded circles), which is colored by ice base elevation to highlight crevasse locations. White dotted line indicates the R3 survey from Horgan, et al. (H2017)6. Red dotted line indicates the composite transect shown in Fig. 1, and blue dotted arrows show the location and approximate orientation of basal crevasses (elevation data are mismatched for outbound and return tracks due to accumulated position error; see Methods). Surface elevations are sourced from the Reference Elevation Model of Antarctica (REMA)65, black grounding line in a is from ASAID66, and all maps were prepared using QGIS54 with the Quantarctica package (V3)55.
