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A23a is a large tabular iceberg which calved from the Filchner–Ronne Ice Shelf in 1986. It was stuck on the sea bed for many years but then started moving in 2020. As of January 2025, its area is about 3,500 square kilometres (1,400 sq mi), which makes it the current largest iceberg in the world. [2] [3] [4]
The iceberg, known as A23a, ... This images provided by Maxar Technologies shows the A23a iceberg moving through the sea sea near the Antarctica, on Wednesday 15 Nov 2023.
The colossal iceberg known as A23a has been slowly spinning in one spot of the Southern Ocean since April. Here’s what experts have to say on the phenomenon.
T he largest iceberg in the world is headed toward an island with a massive population of penguins and seals. ... Scientists catalogued it under the name A23a. It was stuck at sea for decades but ...
The world's largest iceberg is on the move in the Southern Ocean after spinning for months. Iceberg A23a weighs nearly 1 trillion tons and is twice the size of Greater London, according to the ...
November 27: The British Antarctic Survey confirms that the world's largest iceberg, A23a, is now leaving the Weddell Sea and drifting into the Southern Ocean after being in the Weddell Sea for more than 30 years. The iceberg is expected to follow the Antarctic Circumpolar Current and continue to drift away from Antarctica. [3]
The iceberg A23a is approximately 50km across and broke free from the Antarctic coast in 1986. From July 2021 it tracked along the length of the Antarctic Peninsula, and in April 2024 it got stuck in one such Taylor Column in the ACC located over the Pirie Bank. [11]
Behemoth A23a could cut off such access. In 2020, another giant iceberg, A68, stirred fears that it would collide with South Georgia, crushing marine life on the sea floor and cutting off food access.