Massive Antarctic iceberg ripped in two by powerful ocean currents


Iceberg A68a, one of the largest ever recorded icebergs, floating near South Georgia Island. (Image credit: Cpl Phil Dye RAF/Crown copyright)

A swift change in ocean currents in the Southern Ocean likely snapped one of the largest icebergs in half like a twig.

The gigantic ice mass — called A68a — was known as a tabular iceberg due to its rectangular shape. At its largest it was roughly the size of Delaware, covering approximately 2,300 square miles (6,000 square kilometers), and in 2017 it famously calved off another iceberg, A68, dumping 1 trillion tons of meltwater into the ocean over the three years it was seabound. But scientists didn’t know what caused A68a to break apart.


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