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This iceberg looks like a perfect rectangle

26 October 2018
This iceberg looks like a perfect rectangle

This is one of those images.

NASA also released a second photograph captured by Harbeck, in which both the edge of the now-famous iceberg and a slightly less rectangular iceberg can be seen. They are wide and flat and long, like sheet cake, Brunt said.

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

NASA posted their findings on their Twitter, NASA_ICE, the said: "From yesterday's #IceBridge flight: A tabular iceberg can be seen on the right, floating among sea ice just off the Larsen C ice shelf".

This isn't the only iceberg news we've been treated to lately.

Ice shelves are full of fractures and fissures, explains geophysicist Kristin Poinar from the University at Buffalo. "Tabular icebergs are rather like fingernails that crack of, giving them sharp edges".

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

The northern Antarctic Peninsula is ice-covered and mountainous.

He says it's a kind of formation called a tabular iceberg. This iceberg is probably very new, since its sides are still smooth and nearly perfectly vertical. The specific geometric iceberg, which is almost two kilometers long, has been detached from the gradually collapsing Larsen C ice cube on the Antarctic Peninsula. "In Greenland, you would not find these rectangular bergs so much because it is warmer, icebergs break into smaller pieces and the glaciers are smaller as well".

The researchers wrote, 'Computer modeling suggests that the remaining ice could become unstable, and that Larsen C may follow the example of its neighbour Larsen B, which disintegrated in 2002 following a similar rift-induced calving event'.

Such icebergs usually split from the edges of ice shelves, and can have angles close to 90 degrees, provided there is clean calve of the iceberg.

Scientists are concerned about how ice at Earth's poles will fare with warming temperatures, and how melting ice will affect sea levels around the world, but Bartholomaus is hesitant to draw direct links to climate change.