15 October 2019
5.00pm - 6.15pm
Northumbria University City Campus, Newcastle, NE1 8JG
From £1.00 per person
Professor Hilmar Gudmundsson will review the marine-ice-sheet instability hypothesis and discuss the impact of ice shelves.
He argues that one of the greatest scientific challenges of today is understanding and quantifying the impacts of global warming on the environment and societies. Of particular importance is determining whether the resulting environmental changes will be gradual and roughly proportional to external changes, or greatly amplified and sudden. Large and sudden changes might occur within systems that possess internal thresholds. Worryingly, research does suggest the existence of several tipping points within the climate system, which, once passed, may give rise to large, abrupt and possibly irreversible changes in the environment with significant societal implications.
One such potential environmental tipping point is found in the internal dynamics of the Antarctic Ice Sheet. It is now firmly established that marine ice sheets (ice sheets whose bed rests below sea level) such as the West Antarctic Ice Sheet, are susceptible to an unstable and irrevocable retreat. In this talk Professor Gudmundsson will review the marine-ice-sheet instability hypothesis, summarize recent findings, and discuss the impact of ice shelves on the stability of the Antarctic Ice Sheet.
Joint event with Tyne and Wear GA.
Contact Catherine White with enquiries by email.
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