Examples of using Ice sheets in English and their translations into Chinese
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The Galileo spacecraft also discovered strange broken slabs of polygonal ice sheets that were often covered in a reddish material.
In the worst case, called"pulse", warmer waters can cause the collapse of the glaciers that keep Antarctica and Greenland ice sheets.
Rob Dunbar hunts for data on our climate from 12,000 years ago, finding clues inside ancient sea beds and corals and inside ice sheets.
Some, like the white cedar and rhododendron, are only now reaching home- a reminder that, geologically speaking, the ice sheets have only just gone.
Though invisible from the surface, melting within the ice can speed up the process by which ice sheets slide towards the sea.
In a worst-case scenario, called a"pulse," warmer water could cause the glaciers holding back Antarctica and Greenland's ice sheets to collapse.
They used that model to predict how the Greenland and Antarctic ice sheets will speed up their melting in the coming decades.
This will probably continue until greenhouse gas emissions are reduced and ocean temperatures, glaciers and ice sheets are in equilibrium with climate again.
Editor's Note: This article was updated to correct the sea-level contributions from the West and East Antarctic ice sheets.
When changes in the Earth's orbit alter the amount of heat that hits the Earth's surface, the ice sheets are particularly prone to melting.
The only way to forecast decades or centuries ahead is to use computer models that simulate how ice sheets respond to a changing climate.
That doesn't mean they didn't accept the notion that glaciers and ice sheets had once covered the Northern Hemisphere.
The latter figure, based solely on thermal expansion, will likely be higher due to contributions from melting glaciers and ice sheets.
Last November, researchers announced that they had uncovered evidence of a vast 19-mile-wide impact crater deep below the ice sheets of northwest Greenland.
If warming exceeds 2°C, Antarctica's melting ice sheets could raise seas 20 metres in coming centuries WEB.
In the northern hemisphere, continental ice sheets had retreated from as far south as Germany in Europe and Illinois in North America.
Such irreversible impacts include the collapse of ice sheets resulting in sea level rises of several metres, and widespread extermination of certain species.
These resilient ice sheets, plus a cooler climate, resulted in the longer glacial cycles seen after about a million years ago.
Massive ice sheets grew across the Antarctic continent, major animal groups shifted, and ocean temperatures decreased by up to 5 degrees.
If warming exceeds 2 C, Antarctica's melting ice sheets could raise seas 20 meters in coming centuries.