Sentences with phrase «glacial ice flows»

«The meltwater feedback cycle under the ice shelf will only slow down once the shelf has collapsed, or no more glacial ice flows in from inland to take its place.

Chris Borstad, a geophysicist at the University Centre in Svalbard, Norway, is particularly interested in Larsen C's «suture zones» — areas where glacial ice flows off land and merges.

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.

Not exact matches

When floating ice shelves disintegrate, they reduce the resistance to glacial flow and thus allow the grounded glaciers they were buttressing to significantly dump more ice into the ocean, raising sea levels.

These forces occur on Earth in glacial ice as it flows due to gravity, and in space as icy satellite bodies, such as the moons of Jupiter and Saturn, respond to tidal forces from their parent bodies.

Current climate models do not take into account glacial flow and therefore underestimate the impact of glacial melt and the calving of ice flows, the researchers argue in a paper detailing the findings in today's Science.

The pressure of the ice sheet constrains the lava flow, and glacial meltwater chills the erupting lava into fragments of volcanic glass, forming mounds and ridges with steep sides and flat tops.

An assemblage of small hills in the region also appears to be debris left behind by slowly flowing glacial ice.

Since so much of the ice sheet is grounded underwater, rising sea levels may have the effect of lifting the sheets, allowing more - and increasingly warmer - water underneath it, leading to further bottom melting, more ice shelf disintegration, accelerated glacial flow, and further sea level rise, and so on and on, another vicious cycle.

During the last glacial maximum, Wiens explained, the weight of the ice bent the Earth's crust, forcing the plastic rock in the upper layer of the Earth's mantle to flow away from the loaded region.

But if the shelf collapses, then glacial ice could flow into the sea unabated and contribute to rising sea levels.

The causes of ice ages remain controversial for both the large - scale ice age periods and the smaller ebb and flow of glacial — interglacial periods within an ice age.

A 2 - D numerical model of snow / ice energy balance and ice flow for paleoclimatic interpretation of glacial geomorphic features.

But without the ice shelves to impede the flow of glacial ice, typically moving 400 — 900 meters a year, the flow of ice from the continent could accelerate, leading to a thinning of the ice sheet on the edges of the Antarctic continent.

Since glacial ice deforms like very slow putty, the steepening of the glacier would have caused the more mobile, middle section to flow pick up speed.

And study authors found that 2 C to 5 C warming of local ocean waters with somewhat greater local air temperature increases was capable of flooding these basins in stages — forcing Totten's glacial ice to flow out into the Southern Ocean and provide significant contributions to sea level rise.

Next, I would offer the following hypothesis: glacial scarring should be most intense when (1) ice is built up high, and (2) flowing fast downhill.

Climate News Network: Researchers in the US have identified a new reason for the acceleration in the melting of Greenland's icecap − the ice underneath, as it melts and then refreezes, appears to speed up glacial flow.

But in the last 20 years, observers have measured the successive losses to large areas of the Larsen ice shelf off the Antarctic Peninsula, and these have resulted in an alarming acceleration of glacial flow on land, even though Antarctica remains the coldest continent on Earth.

The data might be sensitive to changes of ice cover in the seas near Greenland, or to a local shift of the ice cap's glacial flow.

This image, showing the flow of glacial ice toward the ocean, was derived from ERS SAR measurements.

There are numerous other problems — warm water some how flows preferentially toward glacial grounding lines and stays there to melt the ice.

So, I'm not extremely versed with glacial ice, but what we're talking about is sheathing of ice because of ice flow, not melting, correct?

The observed effects of cryosphere reduction include modification of river regimes due to enhanced glacial melt, snowmelt advance and enhanced winter base flow; formation of thermokarst terrain and disappearance of surface lakes in thawing permafrost; decrease in potential travel days of vehicles over frozen roads in the Arctic; enhanced potential for glacier hazards and slope instability due to mechanical weakening driven by ice and permafrost melting; regional ocean freshening; sea - level rise due to glacier and ice sheet shrinkage; biotic colonisation and faunal changes in deglaciated terrain; changes in freshwater and marine ecosystems affected by lake - ice and sea - ice reduction; changes in livelihoods; reduced tourism activities related to skiing, ice climbing and scenic activities in cryospheric areas affected by degradation; and increased ease of ship transportation in the Arctic.

Or what if stronger tides increased glacial flow or calving at the coasts, or tidal currents openned up gaps in sea ice covering by piling sea ice against islands, thus affecting albedo and surface heat fluxes?

Other factors being investigated are the impact of lakes on Greenland's glacial surfaces, the effect of dust and soot on the ice sheet (which have been shown to have a major impact in accelerating melting in Himalayan glaciers), and how surface meltwater affects ice flow into the ocean (previous research has shown that is speeds it and is increased by short term weather extremes).

This means that atmospheric warming can reach thousands of metres below the ice sheet − warming the glacial base and potentially increasing its rate of flow.

Ice shelves maintain the stability of the ice on the continent: a huge ice shelf slows glacial flow from the highlands and effectively constrains the flow of meltwatIce shelves maintain the stability of the ice on the continent: a huge ice shelf slows glacial flow from the highlands and effectively constrains the flow of meltwatice on the continent: a huge ice shelf slows glacial flow from the highlands and effectively constrains the flow of meltwatice shelf slows glacial flow from the highlands and effectively constrains the flow of meltwater.

The researchers do not yet know whether the draining water is increasing glacial flow, and nor can they be sure how many such depressions in the Greenland ice mask buried meltwater storage tanks.