【My Sisters Friend (2019)】

The My Sisters Friend (2019)breakup of the massive Larsen C Ice Shelf in Antarctica is getting closer and will eventually produce an iceberg the size of Delaware prowling the Southern Ocean, according to new NASA data.

On Friday, NASA released an astonishing new image taken by researchers flying above the ice shelf on Nov. 10 showing the crack is getting longer, deeper and wider. Scientists think it will eventually cause a large section of the shelf to break off.

The scientists associated with a NASA field campaign known as Operation IceBridge measured the Larsen C fracture to be about 70 miles long, more than 300 feet wide and about a third of a mile deep.

SEE ALSO: With a collapsing West Antarctica, sea level rise may be twice as high as we thought

"The crack completely cuts through the Ice Shelf but it does not go all the way across it – once it does, it will produce an iceberg roughly the size of the state of Delaware," NASA said in a press release.

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When this iceberg calving event happens, likely within the next decade, it will be the largest calving event in Antarctica since 2000, the third biggest such event ever recorded and the largest from this particular ice shelf, scientists say. 

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Larsen C lies next to a smaller ice shelf that disintegrated in 2002 after developing a crack similar to the one now growing in Larsen C.

Original image has been replaced. Credit: Mashable

Ice shelves breaking off into icebergs don't directly increase sea levels, since their ice is already resting in the ocean like an ice cube in a glass.

However, because they act like doorstops to the land-based ice behind them, when the shelves give way, the glaciers can begin moving into the sea. This adds new water to the ocean and therefore increases sea levels.

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In the case of Larsen C, once the rift extends all the way across the shelf and breaks off the section of ice, a larger area of ice that is about the size of Scotland will destabilize and be at greater risk for melting, according to other research.

In August, a British research team monitoring the Larsen C Ice Shelf found that the rift had expanded by 14 miles between March and August of 2016. This was the fastest rate of expansion the researchers had observed.

Original image has been replaced. Credit: Mashable Original image has been replaced. Credit: Mashable

The Larsen C Ice Shelf is the most northerly of the remaining major Antarctic Peninsula ice shelves. This part of Antarctica has been warming rapidly in recent years due to a combination of increasing air and sea temperatures. 

The nearby Larsen B Ice Shelf made worldwide headlines in 2002 when it broke up after a similar process of rift-induced iceberg calving. The Larsen B event was featured in the opening scenes of the sci-fi climate change-related disaster film, The Day After Tomorrow.

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