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 West Antarctic ice sheets

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updated Mon. February 19, 2024

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It is unusual for the NSIDC to release data for both poles at the same time, but 2017 has been an "exceptional" year. However, new satellite data shows that there is less sea ice globally than at any time in the entire 38-year satellite record.
The first image shows the north-western Caspian where it meets western Kazakhstan. The brown areas are part of the Volga delta.

South Georgia is an island of astonishing beauty - of imposing landscapes, and bewildering numbers of penguins, seals and seabirds.
At the other end of the planet, scientists are most concerned about Antarctica's western peninsula, sitting underneath a kilometre-thick ice sheet with enough frozen water to lift global sea levels by six or seven metres (more than 20 feet). Warming ...
Richard Alley, professor of geosciences at Pennsylvania State University, who also did not take part in this study, noted that the study didn't consider the possible collapse of the West Antarctic ice sheet. "If that happens, then sea-level rise and ...
'Shackleton's Endurance' is an artwork created last year by Castlebar-based artist Pauline Garavan to mark the centenary of the rescue of the crew of his ship 'Endurance' after it had become trapped in the Antarctic ice of the Weddell Sea. ... Walking ...

To Prof Flynn's suggestion the more recent erosion of polar ice had changed what could be expected in terms of sea-level rise, Dr Kingston said, ``I don't think the matter is settled by any means.
"The projections and results presented in several peer-reviewed publications provide evidence to support a physically plausible GMSL rise in the range of 2.0 meters to 2.7 (meters), and recent results regarding Antarctic ice-sheet instability indicate ...
Disintegration of the West Antarctica ice sheet is taking place right now. The elongating crack is unstoppable, and while it reportedly will not mean rising seas for decades, it is just another sign of warming oceans and future peril.
The world has recovered from two massive economic depressions following the two "Pulses" - two decades-long periods of rapid sea level rise following major ice-sheet collapses in Antarctica - and is now mostly soldiering on again as normal. ... To ...
The centre in eastern France is "the only permanent museum devoted to the Arctic and Antarctic in the world," said communications director Anthony Renou.
The West Antarctic Ice Sheet has a global eustatic sea level contribution of 3.2 m[1] - that is, if all the ice in this area melted, global sea level would rise by 3.2 m. The Antarctic ... The East Antarctic Ice Sheet has a sea level equivalent of ...
But there's a lot we don't know about the behavior of ice sheets, particularly those - like the West Antarctic and parts of the East Antarctic including the Aurora Basin - that sit on ground that is below sea level. For example, warm water can attack ...
I read with interest Mr. Alcock's letter refuting the validity of global warming. As author of the opinion he was referring to, I understood his criticism as I neglected to back that opinion with facts.
In late September, the sky darkens and the ice sheet atop the North Pole expands, spreading a surface freeze across the seas of the Arctic Ocean, like a cataract dilating over a blue iris.
With a massive permafrost melt threatening the release of catastrophic levels of carbon and methane, with sections of the Antarctic ice sheet calving at an alarming rate, with a pandemic of sand mining threatening sea life and waterways throughout the ...
If we do not act immediately, increased CO2 levels will cause all the Arctic ice to melt with irreversible detrimental effects on wildlife and people.

JUDY WOODRUFF: But first: There's a giant crack in an ice shelf of the Antarctic that's been the source of much attention this winter, and is raising new concerns over the larger stability of the ice there.
Antarctic ice melt has increased by 75 per cent over the last 10 years. Meanwhile, in the Arctic, there have been ... Some suggest a 23-foot rise in sea level is possible, with a complete meltdown of the Greenland ice sheet. That means a large chunk of ...
But there's a lot we don't know about the behavior of ice sheets, particularly those - like the West Antarctic and parts of the East Antarctic including the Aurora Basin - that sit on ground that is below sea level. For example, warm water can attack ...
Thwaites Glacier, located in the Amundsen Sea on the West Antarctic Ice Sheet, is one of the fastest-moving glaciers in the world at a rate of 4 kilometers a year.
Alqahtani, F. A., Jackson, C. A-L., Johnson, H. D., Som, R.B. (2017) Controls on the Geometry and Evolution of Humid-Tropical Fluvial Systems: Insights From 3D Seismic Geomorphological Analysis of the Malay Basin, Sunda Shelf, Southeast Asia. Journal ...
Moreover, Antarctica's ice sheet contains 90 percent of the world's freshwater, and if the ice sheet were to melt, it would raise sea level by about 200 feet.
Through National Science Foundation funding, the lab has worked on ice cores from Greenland and Antarctica. Most recently, the researchers were part of the 2006-2013 West Antarctica Ice Sheet (WAIS) Divide Ice Core project, which involved more than 20 ...
We're witnessing early signs of potentially catastrophic developments such as the breakup of the West Antarctic ice sheet, which would cause sea level rises large enough eventually to drown coastal cities and towns across the world. The frequency of ...
Disintegration of the West Antarctica ice sheet is taking place right now. The elongating crack is unstoppable, and while it reportedly will not mean rising seas for decades, it is just another sign of warming oceans and future peril.
Long, roughly parallel cracks score the surface, formed by water and pressure; impossibly blue lakes of meltwater fill depressions; and veiny networks of azure streams meander west, flowing to the edge of the ice sheet and eventually out to sea. The ...
Pine Island Glacier, located on the edge of increasingly unstable ice sheet of West Antarctica, is a top concern for climate scientists and one of the region's biggest potential contributors to global sea level rise.
Images, whether captured by a satellite, a scientist, an explorer, a photojournalist or an artist, enable us to record, study and reflect on our planet's evolving state.
The breaking off the 2-mile-long iceberg from the Pine Island Glacier, which is one of the biggest glaciers in the West Antarctic Ice Sheet, was captured by the Landsat 8 satellite. Around a couple of years ago, an iceberg ten times the size of the ...
The massive, 2-mile-long iceberg - around the size of the island of Manhattan - is imaged by the Landsat 8 satellite ripping apart before it separates from the glacier, one of the largest within the West Antarctic Ice Sheet. In the long history of ...
"We present observational evidence that a large sector of the West Antarctic ice sheet has gone into irreversible retreat," NASA's Dr.
If we do not act immediately, increased CO2 levels will cause all the Arctic ice to melt with irreversible detrimental effects on wildlife and people.
A new study on an ancient ice sheet may hold important clues about our planet's future. The research focuses on the Laurentide Ice Sheet, the massive expanse covering North America during the last Ice Age, which ended about 10,000 years ago. A team of ...
It was part of one of the largest glaciers within the West Antarctic Ice Sheet, which scientists predict will collapse in the next 100 years.
Researchers have used the IceBridge data to observe that the West Antarctic Ice Sheet may be in a state of irreversible decline directly contributing to rising sea levels.
It's hard to say how long it will take for this nearly certain sea-level rise to occur, but the Greenland and West Antarctic ice sheets are in rapid decline and the scientifically conservative Intergovernmental Panel on Climate Change predicts another ...
If icebergs calve off an ice sheet too quickly, it can destabilize the whole system, leading the glaciers to speed their flow and adding more icebergs to the ocean.
The West Antarctic Ice Sheet might completely collapse in the next 100 years. In the meantime, we'll see more and more chunks breaking apart and melting.
NASA's Operation IceBridge Maps Changes To Antartica's Ice Mass (Photo : Mario Tama/Getty Images) ANTARCTICA - OCTOBER 28: A section of the West Antarctic Ice Sheet with mountains is viewed from a window of a NASA Operation IceBridge airplane ...
Eventually, fueled by warming seas, this process could melt the entire West Antarctic Ice Sheet, raising sea levels by 10 to 13 feet.
"Though without direct effect on Antarctic infrastructure, similarly dramatic summer development of ice-shelf fractures is revealed around Antarctica, notably Pine Island glacier in West Antarctica and the Larsen-C ice shelf in the Weddell Sea region ...
The Pine Island Glacier is one of the largest glaciers within the West Antarctic Ice Sheet, accounting for about 20 percent of the ice sheet's total ice flow to the ocean, according to NASA scientists.
Discussing the disintegration of the West Antarctic Ice Sheet - a "tipping point" that he believes we have crossed, irreversibly - Mann notes: "This process could take a millennium to unfold, but we can't rule out the possibility that it may happen ...
The models based on the Heinrich events of the Laurentide sheet fit well with the behaviour of Greenland's ice sheet today, Bassis said.
The Pine Island Glacier, which spans some 225 square miles, is part of an ice shelf that encloses the west Antarctic ice sheet If it continues to melt as quickly as it has been, it will contribute to the rise of sea leaves, according to NASA. Rising ...
Moreover, while there's little direct evidence linking the Larsen C ice shelf breakup to climate change, scientists worry that the processes playing out here could be but a taste of what's to come for West Antarctica, as rising air and sea temperatures ...
Through National Science Foundation funding, the lab has worked on ice cores from Greenland and Antarctica. Most recently, the researchers were part of the 2006-2013 West Antarctic Ice Sheet (WAIS) Divide Ice Core project, which involved more than 20 ...
Eric Rignot is based at the University of California, Irvine, and NASA's Jet Propulsion Laboratory, where he's been tracking changes in ice mass in several glaciers in West Antarctica for two decades. He hit the headlines in 2014 when his research ...
Thwaites Glacier on the edge of West Antarctica as part of the larger West Antarctic Ice Sheet, already one of the planet's fastest-moving glaciers, is sliding unstoppably into the ocean, mainly due to warmer seawater lapping at its underside, speeding ...


 

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