Antarctic glacier geophysics - uncovering ice sheet evolution

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• Professor Martin Siegert, University of Exeter
• Tuesday 28 October 2025, 12:00-13:00
• Department of Earth Sciences, Tilley Lecture Theatre.

If you have a question about this talk, please contact Ali Mashayek.

Six decades of radioglaciology in Antarctica, through multi-sensor airborne geophysical surveys, has led to a ‘first-order’ depiction of Antarctic subglacial topography – an essential input to numerical ice sheet modelling. Deeper inspection of recently-collected geophysical data has also uncovered evidence for past glaciological, hydrological and geological changes in Antarctica. In this talk, I will showcase recent advances in our understanding of Antarctic evolution that have been gained from such assessment; showcasing evidence of Pliocene ice sheet retreat, the preservation of pre-glacial surfaces and the break-up of Gondwana. I will also explain that our knowledge of subglacial Antarctic remains limited and how the ‘next generation’ of ice sheet bed measurements could lead to improved projections of global sea-level rise.

This talk is part of the Department of Earth Sciences Seminars (downtown) series.

This talk is included in these lists:

• AUB_Cambridge Seminars
• Department of Earth Sciences Seminars (downtown)
• Department of Earth Sciences seminars
• Department of Earth Sciences, Tilley Lecture Theatre
• Department of Geography
• MyList
• Scott Polar Research Institute - other talks
• ps635

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