Uh oh: The rift that's about to cleave off a massive Antarctic iceberg has a sibling

Scientists keeping close watch on the Larsen C Ice Shelf in Antarctica have noticed something new: The rift, which has been opening across the shelf for some time, now has a sibling. 

Using a highly-sensitive European Space Agency satellite known as Sentinel-1, scientists have been tracking the progress of a lengthening and widening crack across the floating Larsen C Ice Shelf. Once this crack reaches a certain point — exactly when is unclear — it could break off one of the largest icebergs on record. 

SEE ALSO: A lengthening crack is threatening to cause an Antarctic ice shelf to collapse

Recently, though, the main fissure has not progressed further across the ice shelf, since it's hung up in an area of softer ice known as a "suture zone," slowing its forward speed.  Read more...

More about Global Warming, Sea Level Rise, Antarctica, Larsen B Ice Shelf, and Larsen C Ice Shelf

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