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Last week,???? ?????? ????? ??????? ?????? iceberg A-68a was larger than Rhode Island. By Dec. 23, satellite footage showed the berg had broken apart into several (though still massive) chunks of ice.
Earth scientists have followed this enormous iceberg since July 2017, when it snapped off an ice shelf (the end of a glacier that floats over the ocean) in Antarctica. But over the last month, the berg stirred fresh intrigue. While drifting through the Southern Atlantic Ocean, A-68a was on course to potentially run aground off of similarly-sized South Georgia Island, a biologically rich, remote British territory about 800 miles east of the Falkland Islands. That could threaten wildlife and the marine environment around the penguin-populated island.
"It's a fascinating berg, given the size and trajectory," Stef Lhermitte, an assistant professor in the department of geoscience and remote sensing at the Netherlands' Delft University of Technology, told Mashable last week.
Now, after bumping into the shallow sea floor off the island and snapping off a chunk of ice, the berg has continued rupturing apart. The U.S. National Ice Center pointed out the resulting new icebergs, A-68e and A-68f on Monday.
The ruptured iceberg A-68a on Dec. 23. Credit: Copernicus Sentinel / Pierre Markuse 
The journey of iceberg A-68a. Credit: esa This Tweet is currently unavailable. It might be loading or has been removed.
Overall, the large berg (now bergs) has been pushed along in a current meandering south of the island. The story, however, isn't nearly finished. Some of the new bergs may still get stuck on the shallow sea floor near other parts of South Georgia. In the past, large icebergs have grounded for months just off the island, while others have drifted by.
Massive icebergs benefit the oceans by fertilizing the waters with minerals as they journey through the sea. But the same bergs can also threaten life on a place like South Georgia Island, home to rich populations of penguins, seals, birds, and beyond. Scientists with the British Antarctic Survey are observing how the icebergs might hinder these animals from foraging, and how bounties of freshwater dumping into the ocean could disrupt the marine environment.
Icebergs breaking off of glaciers is a normal, natural event, called calving. But in the coming years on a relentlessly warming planet, marine researchers expect more icebergs as warmer ocean waters melt more ice. Already, Western Antarctica has seen a pronounced increase in calving events. More calving means the possibility of profound sea level rise, particularly from Antarctica's destabilized Thwaites glacier, which could potentially unleash many feetof sea level rise, a disastrous outcome.
"In the future as the climate warms, we will see more icebergs in general," Povl Abrahamsen, a physical oceanographer with the British Antarctic Survey, told Mashable last week.
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