The calving is accelerated when warmer temperatures cause meltwater to trickle into the splitting cracks and widen the ice shelf division. Sitting amid a chaotic jumble of floating ice, it looks perfectly rectangular, as though it was deliberately cut.
In any case, users stressed that the iceberg certainly looked interesting, with several suggesting it reminded them of a scene out of Stanley Kubrick's 2001: A Space Odyssey.
Nasa recently took this photo of a rectangular size iceberg floating off the Antarctic ice shelf.
The ice shelf is about 1,100ft thick and floats on the edge of West Antarctica.
NASA scientists captured the image on an IceBridge flight, an airborne survey of polar ice.
UMBC JCET Scientist at NASA Goddard Space Flight Center, Christopher Shuman, who has been watching the Larsen C Ice Shelf explained that the main iceberg (which was the size of about the size of the state of DE when it split from the shelf in July) has had a previous series of collisions, resulting in larger and smaller fragments.
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Shuman said: "Those forces plus the natural fracture mechanics of ice as it ran into the rocky ice-covered island are how the many fragments of the main berg were formed at that time".
The angular berg is called a tabular iceberg. And the portion above the surface is likely just 10 percent of the total iceberg, Petty says.
Experts reckon the iceberg's "sharp angles and flat surface indicate that it probably recently calved from the ice shelf".
From yesterday's #IceBridge flight:Triangular iceberg surrounded by many different types of sea ice, off the Larsen ice shelf in the Weddell Sea.
What you're looking at here is a tabular iceberg.
"I often see icebergs with relatively straight edges, but I've not really seem one before with two corners at such right angles like this one", Operation IceBridge senior support scientist Jeremy Harbeck said.