Published: Fri, October 26, 2018
Sci-tech | By Laverne Osborne

Operation IceBridge Spots 2 Strangely Shaped Icebergs

Operation IceBridge Spots 2 Strangely Shaped Icebergs

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

Tabular icebergs are the remnants of calving events, where a large strip of ice breaks free from an ice shelf. The berg appears toward the end of the clip on the left. The mission is designed to provide accurate 3D views of the ice created in the Arctic and Antarctic while delivering up-to-date information on changes in the ice shelves.

The so-called tabular iceberg was photographed by scientist Jeremy Harbeck and is notable for its unusually sharp edges, the U.S. space agency said.

NASA scientists captured the image on an IceBridge flight, an airborne survey of polar ice.

"Usually, you get a certain point in which you pass its [the iceberg's] ability to hold itself up", said Walker.

That iceberg was also a wide and flat tabular iceberg, accompanied by smaller tall and thin chunks of ice called pinnacle icebergs.

This is near the Larsen C ice shelf, where NASA believes the iceberg has recently broken off from - evidence of a recent break comes from the fact the iceberg has sharp edges.

Sharp corners and flat surface of the iceberg indicate that it probably was recently split from the shelf.

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A huge crack has been spreading across the Antarctic Lasen C ice shelf for many years, but it began accelerating late last year.

Categorized as a tabular iceberg, the square-like iceberg was estimated to be over a mile across. Eventually, wind and water will wear down the edges.

National Snow and Ice Data Centre research scientist Twila Moon said it's unsurprising that the iceberg fractured in straight lines.

"What makes this one a bit unusual is that it looks nearly like a square".

NASA did not say how large the iceberg was.

The visible part of the iceberg only represents 10 percent of the entire mass, Fox News reports.

Scientists from the European Space Agency wrote in September, 'Sea ice to the east and shallow waters to the north kept this giant berg, named A68, hemmed in.

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