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Iceberg A-68: The story of how a mega-berg transformed the ocean
The world's largest icebergs break off the Antarctic ice sheet. As they drift and melt in the Southern Ocean, they create a unique environment around them.
A rift in the Larsen C ice sheet began growing rapidly in late 2016 and early 2017, eventually leading to the iceberg A-68 breaking off (Credit: British Antarctic Survey) At the peak of its breakup, around 1.5 billion tonnes of fresh water was gushing into the ocean every dayAnother large fragment broke away in late January 2021, not long before the RRS James Cook arrived. In late September, Peter Fretwell at the British Antarctic Survey told BBC News that satellite photos had revealed " a brown smudge on the white ice sheet", indicating the colony had survived.
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