Sentences with phrase «parts of the ice sheet melt»

When large parts of the ice sheet melted at the end of the ice age, the weight of the ice sheet decreased, and the crust began to rebound.

In one projected event, large parts of the ice sheet melt and drain into the ocean over the next millennia, raising global sea levels by several tens of meters.

The implication was that it could become atmospheric CO2, should parts of the ice sheet melt.

Not exact matches

Parts of the massive ice sheet once considered stable have been shown to be melting in new research

Even if the central parts of the ice sheet can survive a warming climate, melting is likely at the extremities, says Sugden.

When parts of the ice melt, liquid water trickles to the base and this can lubricate the underside of the ice sheet, allowing it to slide more quickly into the sea and drive up sea levels at a faster rate.

So parts of these ice sheets, but not all, must have melted during the long - ago warm period.

Part of the fresh water likely originates from melting of the Greenland Ice Sheet north of the Young Sound and is transported with the East Greenland ocean current along the eastern coast of Greenland.

The academics suggest that the melting of the ice sheet may have been caused in part by the fact that some of it rests in basins below sea level.

The warming of the WAIS is most worrisome (at least for this century) because it's going to disintegrate long before the East Antarctic Ice Sheet does «'' since WAIS appears to be melting from underneath (i.e. the water is warming, too), and since, as I wrote in the «high water» part of my book, the WAIS is inherently less stable:

Rapidly increasing melt from Greenland and Antarctica may also contribute although ice sheet contribution is a small part of sea level rise.

Other factors would include: — albedo shifts (both from ice > water, and from increased biological activity, and from edge melt revealing more land, and from more old dust coming to the surface...); — direct effect of CO2 on ice (the former weakens the latter); — increasing, and increasingly warm, rain fall on ice; — «stuck» weather systems bringing more and more warm tropical air ever further toward the poles; — melting of sea ice shelf increasing mobility of glaciers; — sea water getting under parts of the ice sheets where the base is below sea level; — melt water lubricating the ice sheet base; — changes in ocean currents -LRB-?)

Major part of Greenland ice sheet melted in the past without any help from humans.

As I understand it, the sea level record indicates that the melting of the great ice sheets covering parts of the NH began some 16k years ago.

It seems that part of the reason for the Holocene was that the Laurentide ice sheet had not completely melted, surpressing arctic temperatures.

Wilson (1964); Wilson (1966); Wilson (1969); Wilson's starting - point was the suggestion that the center of Antarctica was at the pressure melting point, see Robin (1962), p. 141, who adds that «one would not expect the ice to surge over a large part of Antarctica at one time»; the role of frictional heat in ice - sheet instability was pointed out back in 1961 (in partial support of Ewing - Donn theory), drawing on earlier work by G. Bodvarsson, by Weertman (1961).

The study found it had almost enough data to conclude Antarctica's ice sheets are melting as part of an increasing trend with a «reasonable level of confidence.

At least in part because of the long delay in melting large chunks of glaciers and ice sheets.

The data used in the study included more than 455,000 independent estimates of changes in the land elevation of the vast ice sheets covering Antarctica, both in the western part of the continent, where ice is melting more rapidly, and in the east, where the ice is considered to be more stable, for the time being at least.

Computer models suggest that just small amounts of melting in the coming decades could destabilize the entire ice sheet on the western part of the frozen continent, researchers at the Potsdam Institute for Climate Impact Research in Germany say in a new study.

A massive ice sheet almost completely covers Greenland, and as summertime temperatures climb and sunlight hours lengthen, parts of the ice sheet surface usually melt, especially at lower elevations near the coast.

Previous studies suggested impurities such as black carbon and dust drive melting of bare ice on the lower part of the ice sheet.

However, this situation ended when the freshwater flux from ice - sheet melting decreased and a newly enhanced thermohaline circulation in the Atlantic was likely to have extended the interglacial warmth during the latter part of the Last Interglacial.

Researchers at the University of Texas, Austin, report that increased melting of the Greenland ice sheet — and to a lesser degree, ice loss in other parts of the globe — helped to shift the North Pole several centimeters east each year since 2005.

The Mercer (1978) ``... a threat of disaster» paper introduced above was fraught with presumptions, guesswork, and spectacularly wrong predictions about the connections between fossil fuel consumption by humans and future carbon dioxide (CO2) parts per million (ppm) concentrations, the melting of polar ice sheets, and an impeding sea level rise disaster.

Second, and less important but still rather spectacular, was the melting of virtually every square inch of the surface of this ice sheet over a short period of a few days during the hottest part of the summer, a phenomenon observed every few hundred years but nevertheless an ominous event considering that it happened just as the aforementioned record ice mass loss was being observed and measured.

The base is currently buried about 35 meters below the surface but the part of the ice sheet that covers the camp may start to melt by the end of the century if current warming trends continue, scientists warned.

To determine whether this increased melting of the ice sheets is part of a longer - term trend, Bindschadler and other scientists have set out to answer two daunting questions.

Part of the countless events and exhibits surrounding COP15, a display on ice ecology accompanies the structure to underscore the problems of glacier melting, loss of ice sheets and the disintegrating Antarctica ice bridge.

That's because under this much warmth, parts of Greenland and Antarctica - the great polar ice sheets - will slowly melt and waste away like a block of ice on the sidewalk in the summertime.

That was a key point of Part I of this post; that in the real world, key climate change impacts — sea - ice loss, ice - sheet melting, temperature, and sea - level rise — are all either near the top or actually in excess of their values as predicted by the IPCC's climate models.

The remaining amount is coming from increased surface melting, which is no longer confined to the southern part of the ice sheet — the amount of ice accumulating in the inland part of the ice sheet is starting to decline as well.