Another big iceberg breaks from in front of the UK's Halley research base - the third in three years.
Another big iceberg has broken away from an area of the Antarctic that hosts the UK's Halley research station.This new one is not quite as large, but still measures some 380 sq km - roughly the size of the Isle of Wight.
In 2021, the shelf produced a berg the size of Greater Paris called A74, followed in 2023 by an even bigger block the size of Greater London, known as A81. "They're single frequency GPSs, so they're not particularly accurate, but they tell you when something major happens, and we saw movement of a few hundred metres within an hour, which is a good indication the berg had broken free of the ice shelf," said glaciologist Dr Oliver Marsh.The loss of so much ice from the Brunt structure these past three years has triggered a rapid acceleration in the shelf's seaward movement.
"This latest calving reduces the Brunt Ice Shelf to its smallest observed size," commented remote sensing specialist Prof Adrian Luckman, from Swansea University.
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