Ocean tides can trigger city-sized icebergs to break off from Antarctic ice shelves, scientists said on Thursday, offering a potent ...

He emphasised that iceberg calving is a natural process which balances out the massive amount of snow that falls on Antarctica every year. However, "now we're out of balance", Marsh added.

Ocean tides can trigger city-sized icebergs to break off from Antarctic ice shelves, scientists said on Thursday, offering a potential way to predict these dramatic events in the future.