Sentences with phrase «area of ice sheet»

In just a few days, the area of the ice sheet with surface melting increased from about 40 % to 97 %, including Summit Station, Greenland's highest and coldest spot.

Either the glaciers would have to flow into the ocean at unrealistic rates, or rapid melting would have to be triggered over a much larger area of the ice sheet than current evidence suggests.

This satellite image shows the record melting of Greenland's ice sheet in 2007: the red is the surface area of the ice sheet that had measurable melting during that summer.1

«Our SIMULATIONS have shown a RATHER significant non-linear response of the air temperature and winds, when we shrinked the area of the ice sheet ``, said physicist Petoukhov.

Either the glaciers would have to flow into the ocean at unrealistic rates, or rapid melting would have to be triggered over a much larger area of the ice sheet than current evidence suggests.

If they have identified a sink (increased fragmentation and hence increased surface area of ice sheets, mayhap?)

While these streams appear buttressed by the shelves in front of them, it is currently unknown whether a reduction or failure of this buttressing of relatively limited areas of the ice sheet could actually trigger a widespread discharge of many ice streams and hence a destabilisation of the entire West Antarctic Ice Sheet.

Not exact matches

Every year in the central area of the Greenland Ice Sheet a layer of ice is created separated by a line of duIce Sheet a layer of ice is created separated by a line of duice is created separated by a line of dust.

Considering that the Greenland and Antarctic ice sheets span more than 1.7 million and 14 million square kilometers, respectively, while containing 90 % of the world's freshwater ice supply, melting of ice shelves could be catastrophic for low - lying coastal areas.

A large area of the Greenland ice sheet once considered stable is actually shedding massive amounts of ice, suggesting that future sea - level rise may be worse than expected, a team of scientists warned yesterday in a new study.

The area, marked NEGIS, covers about 16 percent of the island's thick ice sheet.

While the exact sources of black carbon are often difficult to pinpoint in remote areas, the researchers used molecular analysis of the black carbon along with analysis of wind patterns to show that Greenland's ice sheet had recently seen clear effects of wildfires burning thousands of miles away in the Canadian Arctic.

Large areas of the Earth's surface are experiencing rising maximum temperatures, which affect virtually every ecosystem on the planet, including ice sheets and tropical forests that play major roles in regulating the biosphere, scientists have reported.

Both of those effects actually add up to lower sea levels in the area right around the former ice sheet, Mitrovica said.

And over the past 18 months, two of the peninsula's largest ice shelves, the Larsen B and the Wilkins, have lost nearly 1,100 square miles of their total area, a sheet of ice about the size of Rhode IslandCK.

Then in 2008, an area the size of Manhattan broke off the Wilkins Ice Sheet.

We do estimate that an area of hydrocarbon reserves twice the size of Russia was directly influenced by ice sheets during past glaciation.

The Dark Zone is a literally dirty belt of the melting area — the ablation zone — of the ice sheet.

the south - bound expedition had cleared that vast plain of floating ice which flows down from the great mountains of the interior and covers the southern part of Ross Sea throughout an area above 20,000 square miles with an ice sheet approximately 800 feet in thickness, and had begun to climb the heights which form the mountainous embayment at the head of Ross Sea.

Enkelmann appreciates the challenge of collecting samples here because this range has the highest peaks of any coastal mountain range and is only 20 kilometers from the Pacific Ocean, but she points out that it is a tough area to study because of the big ice sheets.

Dr Konrad added: «These differences emphasise the complex nature of ice sheet instability across the continent, and being able to detect them helps us to pinpoint areas that deserve further investigation.»

The slipperiness, caused by films of water spread over large areas, helps ascertain how quickly a melting ice sheet will slide into the sea as the climate warms — and thus how quickly sea levels will rise.

Using sediment gathered from the ocean floor in different areas of the world, the researchers were able to confirm that as the ice sheets started melting and the climate warmed up at the end of the last ice age, 18,000 years ago, the marine nitrogen cycle started to accelerate.

The area covered by all the green leaves on Earth is equal to, on average, 32 percent of Earth's total surface area — oceans, lands and permanent ice sheets combined.

In the San Francisco Bay area, sea level rise alone could inundate an area of between 50 and 410 square kilometres by 2100, depending both on how much action is taken to limit further global warming and how fast the polar ice sheets melt.

Together with the West Antarctic Ice Sheet, it blankets an area roughly the size of Mexico and the United States combined.

At the Dome A site in East Antarctica — roughly the size of the state of California — the base layer of refrozen ice accounted for up to half the total thickness of the ice sheet, and 24 percent of the area covered by ice.

The Greenland Ice Sheet covers an area roughly the size of Mexico and measures up to 3 km thick in some places.

Melting ice sheets could raise sea levels high enough to flood coastal areas around the globe by the end of the century, according to scientists gathering in Denmark today for a three - day climate - change conference.

On its own, sea level rise could inundate between 50 and 410 square kilometres of this area by 2100, depending on how much is done to limit further global warming and how fast the polar ice sheets melt.

The wind changes were found to be heaving warm currents from deeper waters up into a zone where the Antarctic ice sheet is vulnerable to melt and crumble from beneath — the area where towers of ice sit atop submerged ground.

Zachariae is the largest ice stream in a drainage basin that covers 16 percent of the Greenland ice sheet — an area twice as large as the one drained by Jakobshavn.

The Cordilleran Ice Sheet (CIS) once covered an area comparable to that of Greenland.

[7] The IceCon project aims to gain a better understanding of the rate of the loss of ice — now and in the past - from the Antarctic ice sheet in the Dronning Maud Land area, and includes six partners: Université Libre de Bruxelles, Royal Observatory of Belgium, University of Luxembourg, Norwegian Polar Institute, and Aberystwyth University.

Nonetheless, the ice - sheet response to global warming remains an area of what risk analysts call «deep uncertainty».

Combined with melting from mountain glaciers and the Greenland Ice Sheet, this could result in flooding of low - lying areas of Earth over the next century.

The importance of orbital variations, of the greenhouse gases CO2, CH4 and N2O, of the albedo of land ice sheets, annual mean snow cover, sea ice area and vegetation, and of the radiative perturbation of mineral dust in the atmosphere are investigated.

Now as vast areas of land which are currently forested, were covered by the glacial period ice sheets, the temperate forest is no longer using carbon dioxide which adds carbon dioxide to the atmosphere.

This means that all the energy going into the melting of sea ice, ice sheets and glaciers plus the warming of land and atmosphere is the tiny gap between the blue area and the red line.

The ice sheet in this area is grounded up to 2000 m below sea level, making it intrinsically unstable6 and susceptible to rapid melting at its base, and to rapid migration of the grounding line up the ice stream7 (see Marine Ice Sheet Instabilitice sheet in this area is grounded up to 2000 m below sea level, making it intrinsically unstable6 and susceptible to rapid melting at its base, and to rapid migration of the grounding line up the ice stream7 (see Marine Ice Sheet Instabilsheet in this area is grounded up to 2000 m below sea level, making it intrinsically unstable6 and susceptible to rapid melting at its base, and to rapid migration of the grounding line up the ice stream7 (see Marine Ice Sheet Instabilitice stream7 (see Marine Ice Sheet InstabilitIce Sheet InstabilSheet Instability).

Ice shelves surround 75 % of Antarctica's coastline, and cover an area of over 1.561 million square kilometres (a similar size to the Greenland Ice Sheet).

The rapid shrinkage of glaciers around the Antarctic Peninsula, coupled with the potential for ice - shelf collapse and grounding line retreat, raises concerns for the future of the West Antarctic Ice Sheet, and this is an area of urgent current research [ice - shelf collapse and grounding line retreat, raises concerns for the future of the West Antarctic Ice Sheet, and this is an area of urgent current research [Ice Sheet, and this is an area of urgent current research [3].

This number may seem small, but from 2005 to 2010, Alaskan glacier losses made up one third of the world's ice sheet losses, despite having 20 times fewer ice - covered areas than Greenland.

Slow feedbacks, such as change of ice sheet area and climate - driven changes of greenhouse gases, are not included.

«Simply put, the shape of the ice sheet and the contact with the ocean makes it likely that these areas respond more pronouncedly to changes in climate boundary conditions — be they atmospheric, oceanic or glaciological.»

The caves in the limestone gorge of Creswell Crags have provided archaeologists with important evidence of human activity towards the end of the last Ice Age when the area was right at the edge of the ice sheIce Age when the area was right at the edge of the ice sheice sheet.

Often defined as the area within the Arctic Circle, the unspoiled territory of the Arctic encompasses parts of Canada, Norway, Greenland, Iceland and Russia, and cruises here offer an up - close look at snowcapped mountains, deep fjords and gigantic ice sheets.

Richard B. Alley, an expert on Greenland's ice sheet at Penn State, told me it's still possible that flows of meltwater from surface lakes could start large areas of ice moving seaward, particularly if the melt zones continue to expand inland as they have been doing for years now.

The Greenland Ice Sheet has an area of 1,736,095 km2 according to the USGS, the density of an ice sheet is about 900 kg / cubic metIce Sheet has an area of 1,736,095 km2 according to the USGS, the density of an ice sheet is about 900 kg / cubic mSheet has an area of 1,736,095 km2 according to the USGS, the density of an ice sheet is about 900 kg / cubic metice sheet is about 900 kg / cubic msheet is about 900 kg / cubic meter.

So unless the perimeter of the Greenland ice sheet is the exact same thickness as the entire ice sheet (say 3 km on average), an area loss there, of 15 %, will produce a much smaller % volume loss, than say if this area loss were smack dab in the middle of the Greenland ice sheet.