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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.
Scientists catalogued it under the name A23a. It was stuck at sea for decades but confirmed to be moving again more than a year ago. ... This time, an iceberg the size of Rhode Island could park ...
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 ...
The iceberg is about three times the size of New York City and more than twice the size of Greater London, measuring around 4,000sqkm (1,500sqm).. Last year Britain’s polar research ship crossed ...
This is a list of icebergs by total area. In 1956, an iceberg in the Antarctic was reported to be an estimated 333 kilometres (207 mi) long and 100 kilometres (62 mi) wide. Recorded before the era of satellite photography, the 1956 iceberg's estimated dimensions are less reliable.
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.
This iceberg first broke off in 1986 but has been penned in a crowded patch of sea ice for decades until a few years ago, Meijers said. Calving icebergs are normal, but they are happening more frequently as the climate warms and more fresh water flows into the ocean, Meijers said. ___
Iceberg A-68 on 20 July 2017 The drift of Iceberg A-68A from 1 May 2018 to 26 August 2018. Iceberg A-68 was a giant tabular iceberg adrift in the South Atlantic, having calved from Antarctica's Larsen C ice shelf in July 2017. [1] [2] [3] By 16 April 2021, no significant fragments remained. [4]