Widening chasm births Antarctic iceberg larger than Los Angeles

Phil Evans

A widening chasm in Antarctica‘s Brunt Ice Shelf, which forced Britain’s Halley Research Station to be moved to safety several years ago, has finally split in two and birthed a huge iceberg more than 20 miles (30 kilometers) across.

The British Antarctic Survey (BAS) reported on Monday (Jan. 23) that the giant iceberg had “calved” from the floating ice shelf on Sunday (Jan. 22), between about 2 p.m. and 3 p.m. EST (1900 GMT and 2000 GMT), during an exceptionally high tide at sea — known as a spring tide — when the moon and sun are opposite each other.

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