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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.
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 February 2024, its area is about 3,900 square kilometres (1,500 sq mi), which makes it the current largest iceberg in the world. [2] [3]
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.
In addition to size classification (Table 1), icebergs can be classified on the basis of their shapes. The two basic types of iceberg forms are tabular and non-tabular . Tabular icebergs have steep sides and a flat top, much like a plateau , with a length-to-height ratio of more than 5:1.
The iceberg, which measures about 61 by 59 kilometers (about 37.9 by 36.7 miles), is slightly smaller than the mountain and is “at that sweet spot in size, where it’s retained by the column ...
The size at calving was an estimated 4,320 km 2 (1,670 sq mi). Iceberg A-76a in March 2023. The new iceberg was first spotted by Keith Makinson, a polar oceanographer with the British Antarctic Survey in May 2021. [6] By day 148, [7] the iceberg consisted of three fragments, A-76a, A-76b, and A-76c. [8]
Ilulissat Icefjord. The fjord contains the Jakobshavn Glacier (Greenlandic: Sermeq Kujalleq), the most productive glacier in the Northern Hemisphere.The glacier flows at a rate of 20–35 m (66–115 ft) per day, resulting in around 20 billion tonnes of icebergs calved off and passing out of the fjord every year.
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