Mysterious rectangular iceberg found by NASA

Mysterious rectangular iceberg found by NASA

Mysterious rectangular iceberg found by NASA

While most of us think of icebergs as pointy chunks of ice with their spires sticking out of the water, these tabular icebergs are quite different.

Experts said the striking ice-formation is completely natural, created as ice breaks away from an ice shelf. Sitting amid a chaotic jumble of floating ice, it looks perfectly rectangular, as though it was deliberately cut.

"If you look in detail you will even see that from the top is it not that perfectly rectangular as the photo seems to indicate", Stef Lhermitte, a geoscientist specializing in remote sensing at the Netherlands' Delft University of Technology, said over email.

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

A huge, flat iceberg with flawless, right angles was spotted on October 16 by NASA's Operation IceBridge floating among sea ice just off the Larsen C ice shelf.

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The iceberg is believed to have broken off from the Larsen C ice shelf, where a giant iceberg the size of DE calved previous year.

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. This berg hasn't been measured yet, but Brunt says it's about one mile across, which isn't not particularly large.

Brunt observed that the square-like iceberg appeared new at the time because its edges still looked sharp-signs that wind and water had not done their jobs of eroding the iceberg's surface. As it calved, the iceberg may have been smooth and flat underneath, but ocean currents would have quickly changed it. The researchers saw the rectangular berg floating off the coast of northern Antarctica during a survey of the region's polar ice.

The unusual mass, known as an angular iceberg, was spotted during a flyover of the east coast of the Antarctic Peninsula.

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