Perfectly rectangular iceberg found in Antarctica

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																	This giant rectangular iceberg looks totally out of place in Antarctica					
								
			
	
		Mike Wehner

Science This giant rectangular iceberg looks totally out of place in Antarctica Mike Wehner

A freakish iceberg has been spotted by NASA scientists - in the shape of a near-perfect rectangle.

Operation Icebridge use a highly specialised fleet of research aircraft to capture the images.

Whether it's the recent tabular iceberg captured by NASA off the Larson C Ice Shelf, or the Wilkins blocks above, the method of their creation is the same. "And then you have what are called 'tabular icebergs'".

Ice shelves are full of fractures and fissures, explains geophysicist Kristin Poinar from the University at Buffalo.

It looks nothing like the craggy, uneven mass that sunk the Titanic, perhaps the most famous iceberg ever.

They were often geometrically-shaped as a result, she said.

Covering an estimated 5,800 sq km, the Larsen C ice shelf extends along the east coast of the Antarctic Peninsula from Cape Longing to Smith Peninsula.

An enormous, perfectly rectangular iceberg has been discovered floating in the Antarctic by NASA scientists. As it calved, the iceberg may have been smooth and flat underneath, but ocean currents would have quickly changed it.

Scientists from Project MIDAS - a British Antarctic Survey project involving researchers from several British universities - said past year that they feared the entire ice shelf could become unstable.

A semi-circle shaped iceberg with vertical sides, from the Venable Ice Shelf.

In 2008 the British Antarctic Survey flew over a whole collection of these freakishly ideal tabular icebergs, which had broken off of the Wilkins Ice Shelf on the Antarctic Peninsula. A snapshot of the odd iceberg was shared on the internet through a tweet made on October 18. As more ice calves from Larsen C, it makes the ice shelf less stable, and scientists fear this could cause another collapse like those seen with Larsen A and B.

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