Fractures in an Antarctic iceberg were likely caused by rapid changes in the currents that flow through the Southern Ocean.
A swift change in ocean currents in the Southern Ocean likely snapped one of the largest icebergs in half like a twig.
In a study published Wednesday in Science Advances , researchers from Princeton University in New Jersey used satellite imagery and datasets to travel back in time to December 2020, when the finger-shaped iceberg experienced two breakdown events. The researchers theorized that the second breakdown event was triggered by"ocean-current shear" and that a change in currents led to part of the iceberg being lopped off—something that hadn't been reported before.
The"iceberg's fingerlike shape," may have also contributed to the fracture, Huth said,"since it made the berg long enough to overlap the two currents."
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