An ice sheet is a mass of glacier ice that covers surrounding terrain and is greater than 50,000 km2 (19,000 sq mi),[1] thus also known as continental glacier.[2] The only current ice sheets are in Antarctica and Greenland; during the last glacial period at Last Glacial Maximum (LGM) the Laurentide ice sheet covered much of North America, the Weichselian ice sheet covered northern Europe and the Patagonian Ice Sheet covered southern South America.
A group of researchers assessed seven individual climate models and found that in each case common open water vessels will be able to navigate through portions of the Arctic, currently possible only with icebreaker ships, by the mid-century. Moreover, the thinning ice will allow ice-strengthened vessels to sail directly over the pole, something currently unimaginable, dramatically shortening [...]
Scientists from Britain have found a remote ice rift valley, up to one mile deep, under the ice in Antarctica. The rift is similar in size and depth to the Grand Canyon and because it is direct contact with the warming ocean, it’s been found that it has a significant contribution to the unusual ice sheet melting [...]
Researchers at the University of Delaware and the Canadian Ice Service recently reported that an ice island, whose surface is twice that of Manhattan, broke off from Greenland’s Petermann Glacier, one of the two largest glaciers left in Greenland connecting the great Greenland ice sheet with the ocean via a floating ice shelf. The 46-square-mile giant iceberg broke [...]
Antarctica is the most the arid place on Earth. Its climate is so rough, so hazardous that no permanent human populace can live there, however just a few million years ago the harsh plains of the south and north poles had a subtropical climate – a paradise for life. During a transition period of just 100,000 years, [...]
When you think of Antarctica, pristine white icebergs usually come to mind; probably the last thing you’d expect are humbug-like striped icebergs, with blue, green, yellow and even brown. The different colours appear due to various reasons, but generally speaking they appear because some layers of ice form in special conditions. Blue stripes are the [...]
Recently a study was conducted by a team led by Dr Edward Hanna at the University of Sheffield which demonstrated that recent warm summers have caused the most extreme Greenland ice melting in 50 years. This is yet another proof of the damage caused by global warming and it also helps scientists place recent satellite [...]
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Tue, Mar 5, 2013
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