![]() Depending on the trajectory, it could be as significant as A-68a,” says Brisbourne. “It’s big enough to influence the ocean, and the salinity of the ocean. Another iceberg last year, A-68a, at one point appeared on a pathway that could harm wildlife on the island of South Georgia but eventually broke up. However, the new iceberg could still have a significant impact depending on where it ends up. This dramatic breakup comes after a major crack formed on the shelf in November 2020. One of its biggest calving events was in 1986, with icebergs totalling 11,000 square kilometres breaking off, followed by smaller ones in 1998, 20. A giant iceberg, more than 20 times the size of Manhattan, just split off from Antarctica's Brunt Ice Shelf. Of course it’s an evolution in the ice shelf,” says Mark Drinkwater of the European Space Agency.ĭrinkwater says that the Ronne ice shelf is in a fairly “steady state” where it expands after losing iceberg like this. “In the grand context of things this is not humungous. While A-76 is the largest iceberg in the world at the moment, it wouldn’t make the pantheon of the 10 biggest icebergs in history. The part of the ice sheet that it calved from was floating, so the iceberg shouldn’t have any impact on sea level rise. The tabular-shape of A-76 is typical of icebergs, and the horizontal lines on it are a sign of the stresses that caused it to break from the ice sheet, says Brisbourne. Scientists first discovered significant cracks in the. ![]() Read more: Life found beneath Antarctic ice sheet ‘shouldn’t be there’ An iceberg nearly the size of Greater London broke off the Brunt Ice Shelf in Antarctica on Sunday according to the British Antarctic Survey.
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