Satellite imagery confirms a gigantic iceberg, around five times the size of Malta, has finally calved from Antarctica’s Brunt Ice Shelf. The new berg, estimated to be around 1550 sq km (600 sq miles) and around 150 m (500 feet) thick, calved when the crack known as Chasm-1 fully extended northwards
. The new berg, estimated to be around 1550 sq km and around 150 m thick, calved when the crack known as Chasm-1 fully extended northwards severing the west part of the ice shelf. This enormous size makes it over 12 times the area of the city of San Francisco, California, which is 121 sq km .
An iceberg around the size of Greater London broke off Antarctica’s Brunt Ice Shelf due to a natural process called ‘calving’. The iceberg, measuring 1550 sq km, detached from the 150 m-thick ice shelf a decade after scientists first spotted massive cracks in the shelf. Credit: ESA – European Space Agency
This image, captured by the Copernicus Sentinel-2 mission on January 23, shows the 1550 sq km iceberg breaking away from the Brunt Ice Shelf. The new iceberg has been named/is expected to be called A81 with the smaller piece to the north likely identified as A81a. Credit: Contains modified Copernicus Sentinel data , processed by ESA,ESA’s Mark Drinkwater said, “After several years of iceberg calving watch, the long-awaited separation of the Brunt iceberg A-81 has finally taken place.
Using radar images from the Copernicus Sentinel-1 mission, the animation shows the A81 iceberg breaking away from the Brunt Ice Shelf on January 25, 2023. The new berg is estimated to be around 1550 sq km, which is around the size of Greater London, and is approximately 150 m thick. It calved when the crack known as Chasm-1 split northwards severing the west part of the ice shelf. The white square indicated the final breakpoint near the McDonald Ice Rumples.
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