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PolarVortex2019  Antarctica  Midwest  from twitter_favs
18 days ago by dalcrose
'Terrifying': Scientists dig deep for missing piece of climate puzzle | Sydney Morning Herald
This weekend, a crucial but barely heralded scientific mission came to an end in a remote part of Antarctica. A team of seven Australian and American researchers conducted the last extraction of ancient air from ice cores drilled as deep as 240 metres. Peter Neff, a glaciologist at the UW, is quoted.
Neff.Peter  Sydney.Morning.Herald  Antarctica  Polar.Science.Center  !UWitM  2019  natl 
21 days ago by uwnews
Welcome to Thwaites Glacier | Thwaites Glacier
Over the past 30 years, the amount of ice flowing out of this 120-kilometer-wide region has nearly doubled. Overall the glacier is the size of the island of Britain, or the state of Florida, and it straddles some of the deepest bedrock in the southern continent.

Warm ocean water from the Amundsen Sea circulates under the ice, causing it to melt. Melting loosens the ice from the bedrock below, causing it to flow faster and eventually to retreat into the deeper and thicker ice areas where it is likely to speed up still more.

Starting in 2018, and over the next five years, teams of scientists will explore the ocean and marine sediments, measure currents flowing toward the deep ice, and examine the stretching, bending, and grinding of the glacier over the landscape below. The project will involve more than 60 scientists and students.
glacier  ice  antarctica  ocean  climate_change  sea_level 
26 days ago by javagar
Reflections on Antarctica
When it’s blue sky and you’re on the polar plateau, you can feel so small. It’s just endless, and you’re like this tiny little speck. You can look 360 degrees, there’s nothing. There’s no tree, no building. You are the only tiny little thing out there in this endless sea of light. So that makes you feel small. But then when it’s whiteout, it’s the opposite: It’s super myopic, insular. All I can see is my compass a couple inches away from my nose, and the contrast of those two things is so stark, but what is ever-present is that you are just a product of your own thoughts, your own mind.— Colin O’Brady, January 2019
NYTimes  adventure  Antarctica 
29 days ago by thomas.kochi
Live webcam at Novolazarevskaya Station / Станция Новолазаревская, #Антарктида Novo Runway 70°49 S 11°…
Antarctica  from twitter_favs
4 weeks ago by briantrice
Ice loss from Antarctica has sextupled since the 1970s, new research finds - The Washington Post
Rignot 2019 The most striking finding in Monday’s study is the assertion that East Antarctica, which contains by far the continent’s most ice — a vast sheet capable of nearly 170 feet of potential sea-level rise — is also experiencing serious melting.

The new research highlights how some massive glaciers, ones that to this point have been studied relatively little, are losing significant amounts of ice. That includes Cook and Ninnis, which are the gateway to the massive Wilkes Subglacial Basin, and other glaciers known as Dibble, Frost, Holmes and Denman.

Denman, for instance, contains nearly five feet of potential sea-level rise alone and has lost almost 200 billion tons of ice, the study finds. And it remains alarmingly vulnerable. The study notes that the glacier is “grounded on a ridge with a steep retrograde slope immediately upstream,” meaning additional losses could cause the glacier to rapidly retreat.

“It has been known for some time that the West Antarctic and Antarctic Peninsula have been losing mass, but discovering that significant mass loss is also occurring in the East Antarctic is really important because there’s such a large volume of sea-level equivalent contained in those basins,” said Christine Dow, a glacier expert at the University of Waterloo in Canada. “It shows that we can’t ignore the East Antarctic and need to focus in on the areas that are losing mass most quickly, particularly those with reverse bed slopes that could result in rapid ice disintegration and sea-level rise.”

The new research is consistent in some ways with a major study published last year by a team of 80 scientists finding that Antarctic ice losses have tripled in a decade and now total 219 billion tons annually. That research did not find similarly large losses from East Antarctica, though it noted that there is a high amount of uncertainty about what is happening there.
Climate_Science_study  Antarctica  icesheet  SLR 
5 weeks ago by huntercutting

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