Fig. 3: TOPAS (Topographic Parametric Sonar) profiles collected off Ninnis Glacier.
From: Footprint of sustained poleward warm water flow within East Antarctic submarine canyons
a Part of a TOPAS profile collected on the continental rise in front of the Ninnis Glacier in the frame of the PNRA (National Antarctic Research Program) Collapse cruise. b Seismostratigraphic interpretation highlighting the internal configuration of a ca. 40 m thick sediment drift (the time-depth conversion is shown in the “Methods” section) on the eastern flank of the canyon; in this area, poorly constrained by oceanographic measurements, this feature represents a morpho-sedimentary proxy for southward-directed bottom flows. c Location of the sub-bottom TOPAS profile; the dotted ellipse outlines the inferred shape of the sediment drift shown in (a, b).
