Scientists studying Antarctica's vast Thwaites Glacier — nicknamed the Doomsday Glacier — say warm water is seeping into its weak spots, worsening melting caused by rising temperatures, two papers published in the Nature journal showed on Wednesday.
Thwaites, which is roughly the size of Florida, represents more than half a metre of global sea level rise potential and could destabilise neighbouring glaciers that have the potential to cause a further three-metre rise.
As part of the International Thwaites Glacier collaboration — the biggest field campaign ever attempted in Antarctica — a team of 13 US and British scientists spent about six weeks on the glacier in late 2019 and early 2020.
Using an underwater robot vehicle known as Icefin, mooring data and censors, they monitored the glacier's grounding line, where ice slides off the glacier and meets the ocean for the first time.
In one of the papers, led by Cornell University-based scientist Britney Schmidt, researchers found that warmer water was making its way into crevasses and other openings known as terraces, causing sideways melt of 30 metres or more per year.
“Warm water is getting into the weakest parts of the glacier and making it worse,” Ms Schmidt told Reuters.
“That is the kind of thing we should all be very concerned about,” she said about the findings, which underscored how climate change is reaching isolated Antarctica.
The other paper's findings, which Ms Schmidt also worked on, showed about five metres per year of melt near the glacier's grounding line — less than what the most aggressive thinning models previously predicted.
But she said the melting was still of grave concern.
“If we observe less melting … that doesn't change the fact that it's retreating,” Ms Schmidt said.
Scientists have previously depended on satellite images to show the behaviour of the ice, making it difficult to get granular details. The papers represent the first time a team has been to the grounding line of a major glacier, providing a look right where “the action begins”, Ms Schmidt said.
The findings will help in the development of climate change models, said Paul Cutler, programme director of Antarctic Sciences at the National Science Foundation. He reviewed the papers, but was not involved in the research.
“These things can now be taken on board in the models that will predict the future behaviour, and that was exactly the goal of this work,” he said.
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Starring: Lamar Faden, Khairiah Nathmy, Nawaf Al-Dhufairy
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Norwich City 1 (Cantwell 75') Manchester United 2 (Aghalo 51' 118') After extra time.
Man of the match Harry Maguire (Manchester United)
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UAE Premiership - Winners: Dubai Exiles; Runners up: Abu Dhabi Harlequins
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The smuggler
Eldarir had arrived at JFK in January 2020 with three suitcases, containing goods he valued at $300, when he was directed to a search area.
Officers found 41 gold artefacts among the bags, including amulets from a funerary set which prepared the deceased for the afterlife.
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The largest single group of items found in Eldarir’s cases were 400 shabtis, or figurines.
Khouli conviction
Khouli smuggled items into the US by making false declarations to customs about the country of origin and value of the items.
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For sale
A number of other items said to come from the collection of Ezeldeen Taha Eldarir are currently or recently for sale.
Their provenance is described in near identical terms as the British Museum shabti: bought from Salahaddin Sirmali, "authenticated and appraised" by Hossen Rashed, then imported to the US in 1948.
- An Egyptian Mummy mask dating from 700BC-30BC, is on offer for £11,807 ($15,275) online by a seller in Mexico
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MATCH INFO
Manchester City 3 (Sterling 46', De Bruyne 65', Gundogan 70')
Aston Villa 0
Red card: Fernandinho (Manchester City)
Man of the Match: Raheem Sterling (Manchester City)
