Sentences with phrase «sheet of ice broke»

Almost exactly a year ago, a 251 - square - kilometer sheet of ice broke from the Petermann Glacier in Greenland and started slowly drifting into the open ocean.

Not exact matches

This water pump can be put out of action or weakened by changes in the freshwater pressure, the ice sheet breaking up or shifting sea ice and this results in the increasing climatic variability.

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

This isn't the first time ice sheets have calved from the Greenland mainland, but it's one of the largest breaks.

Eventually, the floating ice shelf in front of the glaciers «broke up», which caused them to retreat onto land sloping downward from the grounding lines to the interior of the ice sheet.

The aircraft breaks free of the clouds, and a plane - shaped shadow slides across the ice sheet between crevasses more than 100 feet deep.

Thousands of marks on the Antarctic seafloor, caused by icebergs which broke free from glaciers more than ten thousand years ago, show how part of the Antarctic Ice Sheet retreated rapidly at the end of the last ice age as it balanced precariously on sloping ground and became unstabIce Sheet retreated rapidly at the end of the last ice age as it balanced precariously on sloping ground and became unstabice age as it balanced precariously on sloping ground and became unstable.

By contrast, during the last ice age, hundreds of comparatively smaller icebergs broke free of the Antarctic Ice Sheet and drifted into Pine Island Bice age, hundreds of comparatively smaller icebergs broke free of the Antarctic Ice Sheet and drifted into Pine Island BIce Sheet and drifted into Pine Island Bay.

A closer view of Larsen B (above) from March 7, 2002, reveals that what looks like a solid sheet of ice in the wider view is actually composed of thousands of icebergs that have broken free.

«The ice shelf generally breaks at points that are between a half and full thickness of the ice sheet from the edge,» summarises Christmann.

New understanding of how big ice sheets on Greenland and Antarctica might break up has forced the IPCC to almost double its estimates of likely sea level rise by the end of the century — to as much as 1 metre.

Not only are ice sheets in Greenland and Antarctica breaking up faster than scientists expected, but more of their melt water is flowing into oceans, he said, which will raise sea levels by 3.3 feet (1 meter) by 2100.

If the volcano erupts, the molten rock will melt the base of the ice, hastening the ice sheet's break - up (Nature Geoscience, doi.org/p45).

The prospect of the Arctic sea - ice melting completely; ice - sheets breaking off Antarctica; record temperatures — I'm a complete numbers geek.

Many scientists concede that without drastic emissions reductions by 2020, we are on the path toward a 4C rise as early as mid-century, with catastrophic consequences, including the loss of the world's coral reefs; the disappearance of major mountain glaciers; the total loss of the Arctic summer sea - ice, most of the Greenland ice - sheet and the break - up of West Antarctica; acidification and overheating of the oceans; the collapse of the Amazon rainforest; and the loss of Arctic permafrost; to name just a few.

Emerging from a winter that has had staggeringly warm Arctic temperatures, scientists monitoring the vast Greenland ice sheet announced Tuesday that it is experiencing a record - breaking level of melt for so early in the season.

Now one could argue that an impact of that sort, onto either the open waters of the St. Lawrence or the Laurentide ice sheet, could have vaporized a good deal of water and ice, thus creating a large tsunami that funneled up the St. Lawrence and then broke through to glacial Lake Vermont, and then set off a chain of events that lead to the draining of Lake Vermont and Lake Agassiz, and that could very well satisfy the proxy evidence in the Younger Dryas boundary layer.

Or a sudden break - up of an ice - sheet due to slow build - up of a dynamic stress.

Whether ice dam breaks or ice sheets are forcings or feedbacks is more of a semantic issue than a real one.

Tell me what's wrong with this logic: The only thing keeping Greenland frozen is the ring of mountains surrounding the ice sheet, which keeps lower, warmer air from reaching the ice except at small breaks in the mountains.

The only thing keeping Greenland frozen is the ring of mountains surrounding the ice sheet, which keeps lower, warmer air from reaching the ice except at small breaks in the mountains.

If the West Antarctic Ice Sheet breaks up, and many scientists think it could go before Greenland, it adds another 5 meters to the increase, for a total of 12 meters (39 feet).

I am not going to worry myself into a frenzy of doomsterism as you are if there are a few more — or a few less — icebergs breaking off the West Antarctic Ice Sheet.

No tittering, it's so puerileâ $» every professor of climatology knows that the thickest ice ever is a clear sign of thin ice, because as the oceans warm, glaciers break off the Himalayas and are carried by the El Ninja down the Gore Stream past the Cape of Good Horn where they merge into the melting ice sheet, named after the awareness - raising rapper Ice Sheetice ever is a clear sign of thin ice, because as the oceans warm, glaciers break off the Himalayas and are carried by the El Ninja down the Gore Stream past the Cape of Good Horn where they merge into the melting ice sheet, named after the awareness - raising rapper Ice Sheetice, because as the oceans warm, glaciers break off the Himalayas and are carried by the El Ninja down the Gore Stream past the Cape of Good Horn where they merge into the melting ice sheet, named after the awareness - raising rapper Ice Sheetice sheet, named after the awareness - raising rapper Ice Shesheet, named after the awareness - raising rapper Ice SheetIce SheetSheet...

Breaking away... scientists now believe it takes only 10 seconds for melting to begin at the base of ice sheets.

The chemical tracers also show that circulation slowed almost to a halt during certain stadials known as Heinrich events, when massive amounts of icebergs broke off and drifted away from the Laurentide ice sheet, which covered a large part of North America at the time.

No of course it doesn't, But if the past tells us that ice sheets can break up quickly and sea levels rise quickly (for example) than this may give us insight into likely future system response.

Adolfo Giurfa (11:46:34): For the delight of GWrs:» An ice sheet of 14,000 square kilometres has broken off..»

For the delight of GWrs:» An ice sheet of 14,000 square kilometres has broken off..»

The report, sponsored by the federal National Oceanic and Atmospheric Administration, found unprecedented temperatures this year in the Arctic contributed to a record - breaking delay in the annual freeze — prompting extensive melting of the Greenland ice sheet and land - based snow cover.

Antarctica Series Living On Earth Reporter Terry FitzPatrick at «Upstream Bravo,» a remote field camp where scientists are trying to learn if global warming has caused large sections of the Antarctic ice sheet to break free from the ground below and slip toward the sea.

And older climate models did not include dynamic ice sheet vulnerabilities — like high latent - heat ocean water coming into contact with the submerged faces of sea - fronting glaciers, the ability of surface melt water to break up glaciers by pooling into cracks and forcing them apart (hydrofracturing), or the innate rigidity and frailty of steep ice cliffs which render them susceptible to rapid toppling.

Breaking ice sheets, evaporating lakes and other phenomena relating to Earth's changing climate have influenced the patterns of these rugs by Brooklyn artist Fernando Mastrangelo.

The ice sheet loses most of its mass on the perimeter, through a dozen relatively fast - moving glaciers that have recently become thinner, significantly increased their rates of retreat, and broken up at the ocean end (the terminus).

New views from satellites, plus vigorous programs of precise measurements from airplanes and on the ground, showed that enormous glaciers could quickly change their speed of travel, while entire ice sheets could break up within a matter of months.

Scientists have recently observed major changes in these glaciers: several have broken up at the ocean end (the terminus), and many have doubled the speed at which they are retreating.2, 5 This has meant a major increase in the amount of ice and water they discharge into the ocean, contributing to sea - level rise, which threatens low - lying populations.2, 3,5 Accelerated melting also adds freshwater to the oceans, altering ecosystems and changing ocean circulation and regional weather patterns.7 (See Greenland ice sheet hotspot for more information.)

The warmer summers of 2002, 2005, and 2007 each broke the previous record for melting of the Greenland ice sheet.12

Active physical processes are well - known ways of breaking up ice sheets but had not been included in complex 3D models of the Antarctic ice sheet before.

Nevertheless, the risk of a catastrophic melting and break - up of the Greenland or West Antarctic ice sheets is very real, when we consider that sea level before the most recent ice age was 15 feet higher than it is now.

No tittering, it's so puerile — every professor of climatology knows that the thickest ice ever is a clear sign of thin ice, because as the oceans warm, glaciers break off the Himalayas and are carried by the El Ninja down the Gore Stream past the Cape of Good Horn where they merge into the melting ice sheet, named after the awareness - raising rapper Ice Sheetice ever is a clear sign of thin ice, because as the oceans warm, glaciers break off the Himalayas and are carried by the El Ninja down the Gore Stream past the Cape of Good Horn where they merge into the melting ice sheet, named after the awareness - raising rapper Ice Sheetice, because as the oceans warm, glaciers break off the Himalayas and are carried by the El Ninja down the Gore Stream past the Cape of Good Horn where they merge into the melting ice sheet, named after the awareness - raising rapper Ice Sheetice sheet, named after the awareness - raising rapper Ice Shesheet, named after the awareness - raising rapper Ice SheetIce SheetSheet...

The cyclones help generate waves that break up ice sheets and also dump large amounts of snow, which has an insulating effect and prevents the ice sheets from thickening.

For example, the melting of the Greenland ice sheet broke previous records in 2002, 2005, and 2007, and seasonal melting from 1996 to 2007 was above average compared with the 1973 - 2007 period.10, 11 The melting of the Greenland ice sheet contributed around 0.02 inch (0.6 millimeter) to global sea - level rise in 2005 — more than double the 1996 contribution.4 From 1993 to 2003 the average rate of sea - level rise increased to about 0.12 inches (3.1 millimeters) per year.12 That means that in 2005 Greenland could have contributed 19 percent of the average annual global sea level rise rate.

Icebergs much larger than this have broken off the Antarctic Peninsula, and there is good evidence that warming of the surface air temperature is responsible for at least some of these (though warmer water temperatures, and simply the internal dynamics of ice sheets also play a role).

VP — since you are into a «catastrophic» event, like a sheet of ice «slipping and sliding into the ocean, happening in Antarctica, suppose that the entire Ross Ice Shelf broke off suddenice «slipping and sliding into the ocean, happening in Antarctica, suppose that the entire Ross Ice Shelf broke off suddenIce Shelf broke off suddenly.

For an ice sheet to have constant size, the mass of ice added from snowfall must equal the mass lost due to melting and calving (when icebergs break off).

«Many scientists concede that without drastic emissions reductions by 2020, we are on the path toward a 4C rise as early as mid-century, with catastrophic consequences, including the loss of the world's coral reefs; the disappearance of major mountain glaciers; the total loss of the Arctic summer sea - ice, most of the Greenland ice - sheet and the break - up of West Antarctica; acidification and overheating of the oceans; the collapse of the Amazon rainforest; and the loss of Arctic permafrost; to name just a few.

Most of the melting now is at the center of the glacier, but the fear according to scientists is that the center melting could break up the glacier and affect the ice sheet further inland.

One other thing to point out about the Younger Dryas / Impact theory... They call upon the rapid break up of a portion of the Laurentide Ice Sheet culminating with the original freshwater routing hypothesis to explain the 1.3 kyr reduction in Atlantic overturning circulation.