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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.
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 ...
Roughly 1,550 square miles across, the world's biggest and oldest iceberg, known as A23a, calved from the Antarctic shelf in 1986. Before its calving in 1986, the colossal iceberg hosted a Soviet ...
A23a has held the “largest current iceberg” title several times since the 1980s, occasionally being surpassed by larger but shorter-lived icebergs, including A68 in 2017 and A76 in 2021.
The iceberg, known as A23a, split from the Antarctic’s Filchner Ice Shelf in 1986. But it became stuck to the ocean floor and had remained for many years in the Weddell Sea.
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]
In 1986, satellite images revealed ice breakup near Druzhnaya I. It drifted to sea in 1986 when the ice it was on broke from the main ice shelf as iceberg A23a. [5] It was later discovered at sea by the ship Kapitan Kondratyev. Its equipment and prefabricated structures were airlifted to Druzhnaya III shortly after its construction. [6]
The split of the A38-B iceberg is recorded in this series of images. The iceberg was originally part of the massive A-38 iceberg, which broke from the Ronne Ice Shelf in Antarctica [3] B-15A: 6,400 2002 Northern edge of Iceberg B-15A in the Ross Sea, Antarctica, 29 January 2002: A-68: 5,800 175 50 2017 Calving crack in the Larsen C ice shelf [2 ...