Sentences with phrase «on glacier flows»

Around 1 billion people rely on glacier flows for water, farming and energy in the Himalayas and surrounding regions of Asia, according to

Around 1 billion people rely on glacier flows for water, farming and energy in the Himalayas and surrounding regions of Asia, according to

Our best examples of the impact of sub-glacial volcanoes on glacier flow, come from Iceland.

Not exact matches

Radar measurements and models of Earthly glacial ice flows led researchers to conclude that the glaciers spotted on Mars from orbiters contain nearly 150 billion cubic meters of water.

They can block rivers, creating lakes that can later unleash floods, and by depleting glacier mass, they can threaten the flow of meltwater that downstream towns and farms may depend on.

Larsen C is approximately 350m thick and floats on the seas at the edge of West Antarctica, holding back the flow of glaciers that feed into it.

Some glaciers on the perimeter of West Antarctica are receiving increased heat from deep, warm ocean currents, which melt ice from the grounding line, releasing the brake and causing the glaciers to flow and shed icebergs into the ocean more quickly.

But now, a vulnerable glacier on the other side of the island, part of a massive flow of ice known as the Northeast Greenland Ice Stream, shows that yet another region of Greenland is feeling the effects of warming oceans.

Now, warming seawater intruding underneath has loosened the glaciers» grip on bedrock, speeding their flow toward the sea and causing increasing amounts of ice to break off into the ocean.

CLIMATE CALAMITIES As ice shelves on the Southern Antarctic Peninsula weaken, glaciers flow faster into the sea.

According to Pappalardo, Greenberg's results can be explained by flows of warmer ice like those found in glaciers on Earth.

Snow on the glaciers is melting, causing more water to flow into valley, and this means more water for irrigation.

That warm ice could slowly rise and flow, much like glaciers on Earth, but it would present a daunting barrier to life.

Two new reports have traced the effects of the collapse on the continent's remaining glaciers and found that they are flowing ever faster into the surrounding Weddell Sea.

The research model predicts slightly elevated heat flux upstream of several fast - flowing glaciers in Greenland, including Jakobshavn Isbræ in the central - west, the fastest moving glacier on Earth.

On the glacier scale, thinning is strongest in the Amundsen Sea embayment (ASE), where it is confirmed as being localized on the fast - flowing glaciers and their tributaries (Fig. 3 [belowOn the glacier scale, thinning is strongest in the Amundsen Sea embayment (ASE), where it is confirmed as being localized on the fast - flowing glaciers and their tributaries (Fig. 3 [belowon the fast - flowing glaciers and their tributaries (Fig. 3 [below].

The study reports that glaciers flowing to the coast on the western side of the Peninsula show a distinct spatial correlation with ocean temperature patterns, with those in the south retreating rapidly but those in the north showing little change.

On the other hand, if the ice shell is sufficiently thick, the less intense interior heat can be transferred to warmer ice at the bottom of the shell, with additional heat generated by tidal flexing of the warmer ice which can slowly rise and flow as do glaciers do on Earth; this slow but steady motion may also disrupt the extremely cold, brittle ice at the surface to produce the chaos regionOn the other hand, if the ice shell is sufficiently thick, the less intense interior heat can be transferred to warmer ice at the bottom of the shell, with additional heat generated by tidal flexing of the warmer ice which can slowly rise and flow as do glaciers do on Earth; this slow but steady motion may also disrupt the extremely cold, brittle ice at the surface to produce the chaos regionon Earth; this slow but steady motion may also disrupt the extremely cold, brittle ice at the surface to produce the chaos regions.

Major increases would have to be fuelled by a faster flow of glaciers on the Greenland or Antarctic ice sheets.

Also, the outlet glaciers on Greenland are all variable in flow speed and ice discharge, and I think RC did something before on the acceleration of Jakobshavns Isbrae.

Once the ice shelf retreats to the grounding line, the buoyant force that used to offset glacier flow becomes negligible, and the glacier picks up speed on its way to the sea.

Snow falls on glaciers, which flow downstream under gravity.

You can see glaciological structures on the ice shelf, indicating that it flows out from its tributary glaciers.

REVIEW: Water Science for Schools examines a wealth of water topics such as water properties, how much water is there on earth and where, how water quality and stream flow are measured, the water and water - use cycles, national maps showing how water is used by state, surface and ground water, pesticides in ground water, aquifers, and glaciers and icecaps.

These include increases in heavy downpours, rising temperature and sea level, rapidly retreating glaciers, thawing permafrost, lengthening growing seasons, lengthening ice - free seasons in the ocean and on lakes and rivers, earlier snowmelt, and alterations in river flows.

Among these physical changes are increases in heavy downpours, rising temperature and sea level, rapidly retreating glaciers, thawing permafrost, lengthening growing seasons, lengthening ice - free seasons in the oceans and on lakes and rivers, earlier snowmelt and alterations in river flows.

While I was attending a conference on rapid glacier flow in Vancouver BC in 1986, data were presented that showed no acceleration of Pine Island Glacier.

In central east Greenland, no flow change is detected on Daugaard - Jensen (Fig. 2E) and Vestfjord glaciers (area 9) in 1996 to 2005.

Data flow in from satellite surveys and research projects on dozens of glaciers in 30 countries.

Michael Lemonick at Climate Central writes on new research finding it's unlikely that the recent surge of ice flowing into the sea from Greenland's glaciers is the new normal (the work syncs with earlier analysis by Tad Pfeffer of the University of Colorado):

These are akin to enormous glaciers: hundreds of metres thick, floating on the sea, formed mostly by precipitation, steadily flowing out to sea and breaking up into bergs.

In the long term, shrinking glaciers have a major impact on river flow, with a grave impact on the region's green belt — a major source of agriculture and, increasingly, cotton.

The margins usually slope more steeply, and most ice is discharged through fast - flowing ice streams or outlet glaciers, in some cases into the sea or into ice shelves floating on the sea.

With melt - water lubricating the surface between the glaciers and the rocks on which they rested, ice flows were accelerating, flowing into the ocean at a pace of 2 meters an hour.

A full explanation will require numerical modeling of glacier flow, but observations to date suggest that ice shelves act as «braking» systems on the glaciers behind them.

Examination of recent rapid supraglacial (i.e. on the surface) lake drainage documented short term velocity changes due to such events around 10 %, but little significance to the annual flow of the large glaciers outlet glaciers (Das et.al, 2008).

Changes on fast - flow marine - terminating glaciers contrast with steady velocities on ice - shelf — terminating glaciers and slow speeds on land - terminating glaciers.

The model will be used to access the impact of glacier change on river flows, irrigation and agriculture in the Himalayas and the Indo - Gangetic plain.

Based on GRACE satellite gravity estimates (illustrated in the graph below on the left) and hydrographic measurements (graph on right), Greenland's lost ice has correlated best with the pulses of warm Atlantic water that entered into the Irminger Current that flows to the west around Greenland, delivering relatively warm water to the base of Greenland's marine terminating glaciers.

In a recent paper in press in the Journal of Glaciology Ian Howat and others examined changes in terminus position, surface elevation and flow on 32 glaciers along the southeast coast of Greenland from 200-2006.

The additional processes included in the JULES model will provide a more complete picture of water resources of South Asia than previously possible, allowing quantitative analysis of the effects of changes in river flow and glaciers on water resources and the implications of these changes on water availability for irrigation and therefore crop yields.

The effect of glacier wastage on the flow of the Bow river at Banff, Alberta, 1951 - 1993.

«Nitrogen ice, carbon monoxide ice, methane ice — these ices are geologically soft and malleable, even at Pluto conditions, and they will flow in the same way that glaciers do on the Earth,» McKinnon says.

Satellite images of more than 300 glaciers on the Antarctic Peninsula showed that they were flowing some 12 percent faster in 2003 than they were in 1993 (see an interactive map of Antarctica).

Li, D., and R. T. Pierrehumbert 2011: Sea glacier flow and dust transport on Snowball Earth, Geophys.

Until now, though, most of the focus has been on ice sheet dynamics — how quickly Greenland's glaciers are flowing into the sea.

You can't fake spring coming earlier, or trees growing higher up on mountains, or glaciers retreating for kilometres up valleys, or shrinking ice cover in the Arctic, or birds changing their migration times, or permafrost melting in Alaska, or the tropics expanding, or ice shelves on the Antarctic peninsula breaking up, or peak river flow occurring earlier in summer because of earlier snowmelt, or sea level rising faster and faster, or any of the thousands of similar examples.

Among the most comprehensive surveys ever done, it looked at floating glacier - ice shelves, which are connected to the land - based glacier from which they flowed, and tidewater glaciers that rest on land and break off into the ocean when they reach the water.

Howat and others (2008) examined changes in terminus position, surface elevation and flow on 32 glaciers along the southeast coast of Greenland from 2000 - 2006.

This is not the case on the rapid flowing marine terminating outlet glaciers.