Transition Sheffield - Discussion Forum

A huge Antarctic ice shelf is on the brink of collapse with just a sliver of ice holding it in place, the latest victim of global warming that is altering maps of the frozen continent...

The Wilkins once covered 16,000 sq km (6,000 sq miles). It has lost a third of its area but is still about the size of Jamaica or the U.S. state of Connecticut. Once the strip breaks up, the sea is likely to sweep away much of the remaining ice...

Nine other shelves have receded or collapsed around the Antarctic peninsula in the past 50 years, often abruptly like the Larsen A in 1995 or the Larsen B in 2002. The trend is widely blamed on climate change caused by heat-trapping gases from burning fossil fuels.

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An ice bridge which held a vast Antarctic ice shelf in place shattered at the weekend and could herald a wider collapse linked to global warming, a leading scientist has warned.

"It's amazing how the ice has ruptured. Two days ago it was intact," said David Vaughan, a glaciologist with the British Antarctic Survey.

A satellite picture from the European Space Agency showed that a 25 mile-long strip of ice believed to pin the Wilkins Ice Shelf in place had splintered at its narrowest point, about 500 metres wide.

The Wilkins, now the size of Jamaica, is one of 10 shelves to have shrunk or collapsed in recent years on the Antarctic Peninsula, where temperatures have risen in recent decades apparently because of global warming.

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