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“The rift in Larsen C Ice Shelf seen from onboard NASA’s DC-8 research aircraft.
“The break-up of the Larsen C Ice Shelf, a vast white expanse covering nearly 20,000 square miles, had been predicted as far back as 2004, but now scientists...
phdonohue

The rift in Larsen C Ice Shelf seen from onboard NASA’s DC-8 research aircraft.

The break-up of the Larsen C Ice Shelf, a vast white expanse covering nearly 20,000 square miles, had been predicted as far back as 2004, but now scientists were seeing it firsthand. As they explain, “ice shelves are the floating parts of ice streams and glaciers, and they buttress the grounded ice behind them; when ice shelves collapse, the ice behind accelerates toward the ocean, where it then adds to sea level rise.”

From the air, NASA researchers measured the fracture as being about 70 miles long, over 300 feet wide and about a third of a mile deep. By December, the rift had extended another 13 miles, leaving a massive ice sheet about the size of Delaware clinging on by a narrow thread measuring only 20 miles. Now, that tenuous link is down to 12 miles, and researchers think a complete calving (aka break) is imminent.

If and when it does, the resulting iceberg will be among the biggest ever seen. Nearly 2000 square miles of ice over a thousand feet high will be set adrift – a floating island about a quarter the size of Wales.

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