On the stability of Antarctic grounding lines

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• Ronja Reese, Northumbria University
• Friday 09 June 2023, 14:30-15:00
• https://ukri.zoom.us/j/92941632380; BAS seminar room 1.

If you have a question about this talk, please contact Dr. Shenjie Zhou.

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Theoretical and numerical work has established that grounding lines of marine-type ice sheets can enter phases of irreversible advance and retreat driven by the marine ice sheet instability (MISI). Instances of such irreversible retreat have been found in several simulations of the past and future evolution of the Antarctic Ice Sheet. This raises the importance of a systematic analysis to identify whether Antarctic grounding lines are currently engaged in an irreversible retreat due to MISI , and a more detailed understanding of the committed retreat under present-day climate conditions, i.e., the steady state positions that current grounding lines are attracted to and the (ir)reversibility of potential large-scale transitions. We address these questions within the TiPACCs project using numerical ice flow modelling.

This talk is part of the British Antarctic Survey - Polar Oceans seminar series series.

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