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 ice sheets of Antarctica

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updated Fri. May 4, 2018

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The ice sheets of Greenland and Antarctica will contribute more to sea-level rise this century than any other source, so stalling the fastest flows of ice into the oceans would buy us a few centuries to deal with ... In Antarctica, by contrast, there is little seasonal melting and much less water below the ice sheet.
Scientists have gathered rock samples from more than four kilometres below Antarctica that could reveal how much - or how little - the oceans will need to warm before the frozen continent's ice sheets melt. The international research team made major new discoveries about the West Antarctic Ice Sheet ...

Kiwi scientists just returned from an ambitious drilling expedition in Antarctica broke more than ice on the frozen continent. The 30-strong research team also broke two records: the highest-ever recovery rate from a deep drill core they sent below the vast West Antarctic Ice Sheet, and the longest-ever piston ...
"Science wasn't mature enough at the time of the IPCC report to really deal with what the Antarctic ice sheet contribution would be, so they largely left it out as a dynamic contribution," said Naish. "If Antarctica does something a bit surprising it could be tens of centimetres more by 2100." Antarctica is trickier ...
The issue is that sea levels keep rising for several hundred years after we stabilize temperatures, largely due to the continued melting of ice sheets in Antarctica and Greenland from the heat already in the climate system. The study considered two scenarios. In the first, human carbon pollution peaks ...
The researchers found that between 2008 and 2015, the East Antarctic Ice Sheet had essentially no change in its rate of ice discharge—ice flow into the ocean. They also confirmed that the flow of West Antarctica's Thwaites and Pine Island glaciers into the ocean continues to accelerate, albeit at a slower ...

The important ice streams in Antarctica are wider, tens of kilometers up to 100 kilometers, but their societal consequences are larger as well, because they could potentially trigger a runaway marine ice sheet collapse. The fast-flowing parts of the ice sheets—the outlet glaciers and ice streams—might be the ...
The first, reported on over at The Guardian, was a proposal for massive engineering projects to slow down the melting of ice sheets in the Antarctic and on Greenland. Published in the latest issue of Nature, and authored by a team led by John C. Moore of the University of Lapland, the research outlines a ...
More of one of Antarctica's largest and most important glaciers is floating on top of the ocean than previously thought, researchers say, which could have a ... "But also there's a contribution of the Antarctic ice sheet — and the Greenland ice sheets actually — so as they melt that ice mass flows into the ...
Scientists have peered into one of the least-explored swaths of ocean on Earth, a vast region located off the coast of West Antarctica. It is locked beneath a crust of ice larger than Spain ... The West Antarctic Ice Sheet is up to 10,000 feet thick in some places. It sits in a broad, low bowl that dips thousands of ...
And with our two Antarctic aircraft campaigns from Argentina and East Antarctica, we've flown over a large area of the Antarctic continent. ... to be invaluable for researchers to advance their understanding of how the Greenland and Antarctic ice sheets are contributing to sea level rise and how the changing ...
Without the protection of the A-68's ice, almost 3,600 sq miles (6,000 km) of Antarctic ocean water are now exposed to sunlight and accessible for the first time in more than 120,000 years. Today (Feb. 14), a team of researchers led by the British Antarctic Survey will head down to Antarctica to prepare for a ...
WASHINGTON -- Melting ice sheets in Greenland and Antarctica are speeding up the already fast pace of sea level rise, new satellite research shows. At the current rate, the world's oceans on average will be at least 2 feet -- 61 centimeters -- higher by the end of the century compared to today, according to ...
“Our data are from just one location in Antarctica, but the results provide an indication of how climate variability changed across most of the Southern Hemisphere — and perhaps most of the globe — as the Northern Hemisphere ice sheets receded at the end of the ice age,” said co-author Eric Steig, a UW ...
New research led by CU Boulder shows that the changing topography of ice sheets in the Northern Hemisphere during the last Ice Age forced changes in the climate of Antarctica, a previously undocumented inter-polar climate change mechanism. The new study—published today in the journal Nature and ...
But, as Reuters points out, “Many people use the term 'ice cap' to refer to polar sea ice or vast ice sheets on Greenland and Antarctica.” The two swaths of ice in ... That's compared with about 127 gigatonnes per year on average for the Antarctic ice sheet (see chart below). (One gigaton is equal to 1 billion ...
His landmark paper drew on fieldwork at the Reedy Glacier, which feeds into West Antarctica's Ross Sea (J. H. Mercer Int. Assoc. Sci. ... The melting of Greenland or the East Antarctic Ice Sheet could not explain it, because both are located on solid earth and would respond relatively slowly to warming.

Ice sheets play a crucial role in maintaining sea levels. The amount of ice loss from the West Antarctic Ice Sheet has accelerated, increasing by 70% in the past decade, according to research published in the journal Science. While the ice sheet in East Antarctica is gaining in mass because of increased ...
The grounding zone is a strip of the shelf located above the coast of the underlying Antarctic continent and under which the ice is transitioning from resting on the ground to floating. Although scientists have long regarded grounding zones as linchpins of ice sheet longevity, no one had previously drilled into ...
There are confirmed reports that the sea level is rising, and not from climate change. NASA recently discovered live active volcanoes under the Antarctic ice sheets spewing hot molten fluid onto the subsurface ice sheets, melting the ice. Now we have undisputed evidence the sea level is rising and more ...
If all the ice sheets were to melt, Antarctica would raise global sea levels by at least 56m. ... anthropogenic global warming has gone into the ocean, and these warming ocean waters are now meeting the floating margins of the Antarctic ice sheet, the potential for rapid ice sheet melt in a 2°C world is high.
There are a lot of scientific eyes on west Antarctica right now, for some pretty obvious reasons. The West Antarctic Ice Sheet (WAIS) holds a lot of water – enough to push up sea levels around the world by 3m or so. Even though this sort of melting would play out over century-long time scales, getting a ...
Here's the real story: On Nov. 7, NASA's Jet Propulsion Laboratory in Pasadena, Calif., issued a summary of the study about the heat source under West Antarctica. The paper, "Influence of a West Antarctic mantle plume on ice sheet basal conditions," was published in the Journal of Geophysical Research: ...
... York will flood when the ice caps in Greenland and Antarctica melt ... the simulation shows which Arctic and Antarctic ice sheets will affect ...
Beneath the Antarctic ice sheet, there lies a continent that is covered by rivers and lakes, the largest of which is the size of Lake Erie. Over the ...
The future of Earth's large ice sheets in Antarctica and Greenland ... The behavior of the West Antarctic Ice Sheet, in particular, is difficult to ...
Getty Images Photojournalist Mario Tama captured the experience of a nine-hour research flight over West Antarctica to monitor ice loss while he was ... Researchers have used the IceBridge data to study what is perhaps an irreversible decline of the West Antarctic Ice Sheet that is directly contributing to ...
Friday, November 10, 2017, 9:12 - A new NASA study bolsters the theory that a heat source exists under West Antarctica. Researchers have found evidence that ...
The marker isn't even the true location of the South Pole. Antarctica is blanketed by massive chunks of moving ice sheets that move about 30 feet each year.
Heat source under Antarctica melting its ice sheet: NASA ... to the West Antarctic ice sheet, it may help explain why the ice sheet collapsed ... Ice Sheet System Model (ISSM), a numerical depiction of the physics of ice sheets.
“This will be the first time where sensors have been deployed under the west Antarctic ice sheet for any period of time really covering a wide ...
“This will be the first time where sensors have been deployed under the west Antarctic ice sheet for any period of time really covering a wide ...
The deep ocean around Antarctica is a special place for several reasons. Because Antarctica is pushed down by the weight of its ice sheets, ...
"The primary uncertainty in sea level rise is what are the ice sheets going to do over ... to ice loss in both Greenland and parts of Antarctica. ... And many researchers are trying to improve maps of the Antarctic ice sheet, as well.
... sheds new light on the melting of an ice sheet in eastern Antarctica. ... the Antarctic Ocean and melting from below of Totten Glacier, which is ...
From the air, the largest glacier on the biggest ice sheet in the world looks the same ... East Antarctica's Totten Glacier is melting, fast, from below. ... patterns causing drastic melting in the West Antarctic, where most ice sheets ...
... Pole after a huge crack opened in the ice sheet near their base. ... Researchers from the British Antarctic Survey, which has a research station at the Halley VI ice base in the Antarctic had to flee the lab as a crack in the floating ice shelf, .... Antarctica, the southernmost continent and site of the South Pole.
Being based in Antarctica will allow IceBridge to fly areas of the ... for Remote Sensing of Ice Sheets (CReSIS) at the University of Kansas, while ...
The future of the British Antarctic Survey at the south pole is in doubt after ... station for the second time after cracks lengthened in the ice sheet.
... the horrific treatment she received during scientific field work in Antarctica. ... already for outstanding research on the East Antarctic Ice Sheet.
Just as a river collects water that drains from a specific area, Antarctica's glaciers collect ice from parts of the great ice sheets that cover the ...
The ocean surrounding Antarctica is extremely cold, but water over 300 ... of the potentially increased vulnerability of West Antarctic ice sheets, ...
Winter sea ice blankets the Weddell Sea around Antarctica in this satellite ... In an otherwise thick layer of sea ice, still frozen from the Antarctic winter, the ... called a “huge, upside-down canyon” in the ice sheet from below.
Open-Source Tool Aims to Boost Confidence in Ice Sheet Models ... As global temperatures rise, ice sheets are shrinking. ... ice sheets with layers built up over millions of years blanket most of Greenland and Antarctica.
“If there is warming over Antarctica, which is likely to happen, then the ... What this means for the future of the ice sheet is unknown, Berne ...
The Sentinel-1 satellite captured this image of a 100-square-mile chunk of ice calving from West Antarctica's Pine Island Glacier on September ...
New data from Antarctica reveal that dry winds are causing snow to turn ... the ground – which could affect the mass of the continent's ice sheet.
Satellites measuring Earth's melting ice sheets to go dark ... such as an ice sheet, the enhanced gravity of that region tugs a little bit more on ... effect: Melting ice sheets in Greenland and Antarctica are pouring water into the ...
But so, too, will the support staff of the United States Antarctic base, ... Sea ice sheet to putting out a nasty fire on an incoming airplane engine.
One of Antarctica's volcanoes, Mount Takahe, is found close to the remote centre of the West Antarctic Ice Sheet. In a new study, scientists ...


 

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