Articles on Antarctic ice sheet

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A glacier front meets the sea in Antarctica. The ice sheet holds enough water to raise global sea level by about 190 feet (58 meters). Qiyue Sun

Antarctica’s ice loss is locked in, and extra snowfall won’t save it – that’s bad news for low‑lying coastal areas elsewhere

The Antarctic ice sheet’s future depends how a chain of events plays out. A new study finds the evidence points in one direction.
The ice that now covers West Antarctica was not there 3.6 million years ago, after a massive collapse of the ice sheet during a warming period. Anna Ruth Halberstadt

West Antarctica’s history of rapid melting foretells sudden shifts in continent’s ‘catastrophic’ geology

A picture of what West Antarctica looked like when its ice sheet melted in the past can offer insight into the continent’s future as the climate warms.
The Australian ice-breaker RSV Nuyina, cruising around Antarctica. Pete Harmsen/Australian Antarctic Division

Antarctica has its own ‘shield’ against warm water – but this could now be under threat

The Antarctic Slope Current shields Antarctica from warm waters. But new research shows meltwater is speeding up the current, which could make it more unstable.
The Weddell Sea helps power the great ocean conveyor, which moves heat, carbon dioxide and nutrients around Earth’s ocean basins. Janelle Lugge/Shutterstock

Slowing deep Southern Ocean current may be linked to natural climate cycle – but that’s no reason to stop worrying about melting Antarctic ice

Freshening seawater around Antarctica is disrupting a global ocean conveyor which regulates the climate.
Transantarctic Mountains peaks are some of the only parts of the continent not buried beneath ice. Matt Makes Photos / shutterstock

Glaciers have existed on Earth for at least 60 million years – far longer than previously thought

Scientists used satellites to map tens of thousands of glacial landforms in Antarctica’s highest mountains.
Co-author Chloe Gustafson and mountaineer Meghan Seifert install measuring equipment on an ice stream. Kerry Key/Lamont-Doherty Earth Observatory

Scientists in Antarctica discover a vast, salty groundwater system under the ice sheet – with implications for sea level rise

Liquid water below the ice determines how fast an ice stream flows. As the ice sheet gets thinner, more of that salty groundwater could rise.
Scientists hunt for meteorites on the Nansen blue ice area in East Antartica, close to the Belgian Antarctic research station Princess Elisabeth. BELARE 2019-2020 meteorite recovery expedition on the Nansen Ice Field

Mapping out meteorites in Antarctica: scientists’ bid to uncover our solar system’s deep past

Scientists have crafted the world’s first “treasure map” to reveal Antarctica’s meteorites. These chunks of stone-like material could throw light on the mysteries of our early solar system.
The project’s drill rig on the slopes of the Kamb Ice Stream.

Exploring Antarctica’s hidden under‑ice rivers and their role in future sea‑level rise

Researchers have surveyed an Antarctic under-ice river for the first time directly, and their observations support the idea that such sub-glacial rivers form estuaries as they flow into the ocean.

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