Thursday, 21 May 2026

The ‘doomsday’ glacier’s giant ice shelf is about to break away

 

Image courtesy of Chang W. Lee/New York Times/ Redux/eyevine

Joel Kontinen

The floating ice shelf of world’s widest glacier – Thwaites glacier in Antarctica – is detaching, with worrying implications for global sea-level rise.

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Antarctica’s most threatened glacier is about be further destabilised, as the floating ice shelf in front of Thwaites glacier is set to break away.

“Its final demise could happen suddenly, and to avoid being caught on the hop, we have already prepared an ‘obituary’ press release,” says Rob Larter at the British Antarctic Survey.

Dubbed the “doomsday glacier”, Thwaites is about the size of Britain, but it is shrinking rapidly and is already responsible for 4 per cent of all global sea-level rise. Worse still, its collapse is expected to set off a domino effect in the entire West Antarctic ice sheet, ultimately resulting in a calamitous sea-level rise of 3.3 metres and changing the coastline of the entire planet.

Source:

Alison George 2026 The ‘doomsday’ glacier’s giant ice shelf is about to break away | New Scientist 18 May