Sentences with phrase «land ice flowing»

Ice shelves grow through a combination of land ice flowing to the sea and snow accumulating on their surface.

Second, melting land ice flows into the ocean, also increasing sea level across the globe.

Not exact matches

What matters for sea - level rise is the addition of ice from land into the ocean, however it's the ice shelves that hold off the flow of grounded ice toward the ocean.

Huygens came to rest in what looked to be a floodplain strewn with «stones» of water ice polished smooth by flows of liquid methane, and it touched down with a crunch that suggested its slushy landing site was covered in a frozen glaze — a bit like crème brûlée.

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.

The ice shelves that fringe the land - based ice hold back the flow of inland ice to the ocean.

A glaciologist rather than a biologist, he wanted to investigate a question critical to climate change: Do subglacial rivers and lakes lubricate the movement of ice over land — and might they somehow accelerate a glacier's flow into the ocean, triggering rapid sea level rise?

But an ice shelf is thought to act as a «cork in the bottle,» damming the flow of the land - based glacier that slowly feeds the shelf in the sea.

Multiple observations indicate that the flowing water responsible for shaping and moving the rounded pebbles encountered in the vicinity of the rover landing area has long since been lost to space, though some of it may still exist deep below the surface of the planet at equatorial locations (water ice is known to exist near the surface at the poles).

Once an ice shelf is removed, land ice can flow more easily into the sea.

They slow the flow of ice from the continent into the ocean and act as a buffer, preventing the formation of large cliffs of land ice.

Though the glaciated surface flows down to the sea, much of the miles thick ice fills a vast central basin, the land beneath sloping downhill towards Greenland's center, much of which is over a kilometer below the elevation of the coast.

The glaciological community has for decades harbored the widespread belief that the thermal evolution of the ice sheet, and the effect of this evolution on ice flow, are central in the ice - age cycling (not all communities agree, but there is plenty of literature on this from the land - ice crowd), so use of a temperature - independent rheology for the ice leaves out one favored explanation for termination of extensive glaciation.

However, as Timothy explained in # 121, in addition to the direct sea level rise that occurs when ice shelves melt, there is a much larger secondary effect, in that ice shelves act as a brake, greatly reducing the rate of flow of the glaciers behind them from the land to the sea; and when ice shelves melt, the rate of glacier flow increases quite rapidly.

This flow of ice, fed by the continuous formation of new ice on land and culminating in the breakup of the shelves on the outer fringe and the calving of icebergs, is not new.

If that happened a natural barrier to the flow of ice from glaciers and land - covering ice sheets into the oceans would be removed.

The Arctic's vulnerability is exacerbated by increasing flows of freshwater from rivers and melting land ice, as freshwater is less effective at chemically neutralising the acidifying effects of CO2.

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

Ice shelves are thick, floating platforms of ice formed when glaciers flow from the land onto the ocean surfaIce shelves are thick, floating platforms of ice formed when glaciers flow from the land onto the ocean surfaice formed when glaciers flow from the land onto the ocean surface.

Floating ice sheets (not seasonal sea ice) act as buttresses, slowing the speed with which land ice can flow.

Ice shelves (the large slaps of ice that flow off the land) have been disintegrating, the most significant of which occurred in 2002 when an ice shelf that was once the size of Connecticut shattered in just a matter of daIce shelves (the large slaps of ice that flow off the land) have been disintegrating, the most significant of which occurred in 2002 when an ice shelf that was once the size of Connecticut shattered in just a matter of daice that flow off the land) have been disintegrating, the most significant of which occurred in 2002 when an ice shelf that was once the size of Connecticut shattered in just a matter of daice shelf that was once the size of Connecticut shattered in just a matter of days.

And as they fall apart, the flow of land ice toward the sea accelerates, speeding up sea - level rise.

These models predicted that the Northern Hemisphere Polar region would warm fastest and first, that the Southern Ocean would draw a greater portion of atmospheric heat into the ocean system, and that land ice melt near Greenland and West Antarctica would generate cold, fresh water flows into the nearby ocean zones and set off localized cooling.

Different inter-hemispheric energy flows, Different geographical distribution of land, ocean and snow / ice covered surfaces, Different energy sources and sinks both in atmosphere and hydrosphere, different isolation depending on celestial parameters.

These measurements provide the first direct evidence that Western Palmer Land is losing ice due to increased glacier flow — a process known as dynamical imbalance.

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.

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Between the fast flowing marine terminating outlet glaciers, the ice sheet particularly in the southwest quadrant has numerous glaciers that terminate on land or in small lakes.

The ice shelves act as giant buffers, slowing the flow of glaciers from the frozen land behind them.

In 2000, Ice Stream A, the southern most of several major ice streams draining from Marie Byrd Land into the Ross Ice Shelf, flowing west to Gould Coast to the south of Whillans Ice Stream, Antarctica was renamed the Mercer Ice Stream in his honor.&raqIce Stream A, the southern most of several major ice streams draining from Marie Byrd Land into the Ross Ice Shelf, flowing west to Gould Coast to the south of Whillans Ice Stream, Antarctica was renamed the Mercer Ice Stream in his honor.&raqice streams draining from Marie Byrd Land into the Ross Ice Shelf, flowing west to Gould Coast to the south of Whillans Ice Stream, Antarctica was renamed the Mercer Ice Stream in his honor.&raqIce Shelf, flowing west to Gould Coast to the south of Whillans Ice Stream, Antarctica was renamed the Mercer Ice Stream in his honor.&raqIce Stream, Antarctica was renamed the Mercer Ice Stream in his honor.&raqIce Stream in his honor.»

Knowing what is driving ice - shelf melt is important because when ice shelves lose mass, they speed up the flow of land - bound glaciers that feed them, moving ice from the continent to the ocean, and contributing to global sea level rise.

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.

Loss of the Antarctic ice shelves, which extend from the southern polar land mass over the underwater continental shelf, are likely to result in the glaciers behind them flowing more rapidly into [continue reading...]

«With most glaciers that are moving ice from the land into the sea and causing sea level rise in Greenland, the majority of their velocity appears to be due to the flow rather than the sliding,» he said.

Changes in land elevation may occur in response to many processes, including mountainbuilding (tectonic) processes, or flow or bending of rocks caused by ongoing or past changes in loading from ice, water or sediment (isostatic changes).

Sea level is rising, primarily in response to a warming planet, through thermal expansion of the oceans, and also via the loss of land ice as ocean and air temperatures increase, melting ice and speeding the flow of non-floating ice to form floating icebergs.

When land ice melts, meltwater flows into the ocean, contributing to sea level rise.

The ice stream's speed - up and near - doubling of ice flow from land into the ocean has increased the rate of sea level rise by about.06 millimeters (about.002 inches) per year, or roughly 4 percent of the 20th century rate of sea level increase.

Alternatively, it may be the result of increased ocean heat transports due to either an enhanced thermohaline circulation (Raymo et al., 1989; Rind and Chandler, 1991) or increased flow of surface ocean currents due to greater wind stresses (Ravelo et al., 1997; Haywood et al., 2000), or associated with the reduced extent of land and sea ice (Jansen et al., 2000; Knies et al., 2002; Haywood et al., 2005).

Glacier - A mass of land ice that flows downhill under gravity (through internal deformation and / or sliding at the base) and is constrained by internal stress and friction at the base and sides.

They slow the flow of ice from the continent into the ocean and act as a buffer, preventing the formation of large cliffs of land ice.

An ice sheet forms when snow falls on land, compacts into ice, and forms a system of interconnected glaciers which gradually flow downhill like play - dough.

When land ice melts and flows into the oceans global sea levels rise on average; when sea ice melts sea levels do not change measurably.

Ice shelves do not raise sea level when they melt, but do seem to accelerate the flow of land - bound ice into the sea — one of the «unknowns» of global warmiIce shelves do not raise sea level when they melt, but do seem to accelerate the flow of land - bound ice into the sea — one of the «unknowns» of global warmiice into the sea — one of the «unknowns» of global warming.

Driven primarily by atmospheric stresses, these ice bridges are formed when sufficiently thick ice «jams» during the course of its flow between land masses, resulting in a region of stationary compacted ice that is separated from a region of flowing open water (a polynya) by a static arch.