Figure 1 . Crane Glacier’s (a) location, (b) floatation state, and (c) ice velocity through time. (a) Hillshade map of the Larsen B Ice Shelf region, showing a reference centerline (dashed blue, annotated every 10 km, which we use for all subsequent along-flow transects) and an early, satellite-derived estimate of the 2002 grounding line (Rack & Rott, 2004; “RR04”; orange). (b) Range of floatation heights and ice surface elevations in November 2002 with our updated grounding line. (c) ITS_LIVE (solid) and MEaSUREs (dashed) ice velocity profiles along the flight line from 2005-2019.