Fig. 1: Changes in ice shelf area and pinning points of the Wordie Ice Shelf.
From: Half a century of dynamic instability following the ocean-driven break-up of Wordie Ice Shelf
A Location of Wordie Bay in the Antarctica Peninsula (made with Quantarctica70). B Evolution of ice shelf frontal position and pinning points 1947–2022, and 1966–2023 grounding line at Wordie Ice Shelf overlaid on a Landsat satellite image dated 06-01-1974. The 1966 grounding line is estimated from the historical DEM, while the 1996, 2001, and 2014 positions are sourced from existing datasets33,55,56. The 2023 grounding line positions at FIP1, FIP2, and Prospect glaciers are estimated from optical satellite imagery(Methods). The pinning point color indicates the period of unpinning, while the symbol indicates the process of unpinning (circle = retreat, square = thinning). C Evolution in ice shelf area and number of pinning points 1947–2022. D Disappearance of a pinning point at the outlet of Prospect Glacier 1966–1986 due to thinning of the ice shelf. The location of the pinning point can be seen in (B).
