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The Brunt Ice Shelf borders the
In 2012, previously stable large chasms in the ice shelf (cracks which clearly go all the way through to the sea) started expanding, which was expected to cause large parts of the Brunt Ice Shelf to break off within the next few years. On 26 February 2021, the Iceberg A-74 duly broke away from the north-facing shelf, separating from the edge of the shelf at the McDonald Ice Rumples along the North Rift and finally joining the Brunt-Stancomb chasm. As of 28 February, A-74 was located at 75° 13' South, 25° 41' West and measures on its longest axis and on its widest axis.
On 23 January 2023, the second major calving from this area occurred when the crack known as Chasm-1 fully extended through the ice shelf, creating a iceberg. Chasm-1 had continued to grow since 2015 and by December 2022 extended across the entire ice shelf, marking the beginning of the calving event.
Antarctic
The Antarctic (, ; commonly ) is the polar regions of Earth, polar region of Earth that surrounds the South Pole, lying within the Antarctic Circle. It is antipodes, diametrically opposite of the Arctic region around the North Pole.
The Antar ...
coast of Coats Land
Coats Land is a region in Antarctica which lies westward of Queen Maud Land and forms the eastern shore of the Weddell Sea, extending in a general northeast–southwest direction between 20°00′W and 36°00′W. The northeast part was discover ...
between Dawson-Lambton Glacier and Stancomb-Wills Glacier Tongue. It was named by the UK Antarctic Place-names Committee
The UK Antarctic Place-Names Committee (or UK-APC) is a United Kingdom government committee, part of the Foreign and Commonwealth Office, responsible for recommending names of geographical locations within the British Antarctic Territory (BAT) an ...
after David Brunt, British meteorologist, Physical Secretary of the Royal Society
The Royal Society, formally The Royal Society of London for Improving Natural Knowledge, is a learned society and the United Kingdom's national academy of sciences. The society fulfils a number of roles: promoting science and its benefits, re ...
, 1948–57, who was responsible for the initiation of the Royal Society Expedition to this ice shelf in 1955.
It was the location of the base of the Royal Society Expedition, 1955–59 which was taken over as the British
British may refer to:
Peoples, culture, and language
* British people, nationals or natives of the United Kingdom, British Overseas Territories and Crown Dependencies.
* British national identity, the characteristics of British people and culture ...
Halley Research Station.
The Brunt Icefalls () extend along Caird Coast for about , where the steep ice-covered coast descends to Brunt Ice Shelf. The icefalls were discovered on 5 November 1967, in the course of a United States Navy
The United States Navy (USN) is the naval warfare, maritime military branch, service branch of the United States Department of Defense. It is the world's most powerful navy with the largest Displacement (ship), displacement, at 4.5 millio ...
Squadron VXE-6 flight over the coast in LC-130 aircraft, and was plotted by the United States Geological Survey
The United States Geological Survey (USGS), founded as the Geological Survey, is an agency of the U.S. Department of the Interior whose work spans the disciplines of biology, geography, geology, and hydrology. The agency was founded on Mar ...
from air photos obtained at that time. It was named by the Advisory Committee on Antarctic Names
The Advisory Committee on Antarctic Names (ACAN or US-ACAN) is an advisory committee of the United States Board on Geographic Names responsible for recommending commemorative names for features in Antarctica.
History
The committee was established ...
in association with the Brunt Ice Shelf.
Calving events
In 2012, previously stable large chasms in the ice shelf (cracks which clearly go all the way through to the sea) started expanding, which was expected to cause large parts of the Brunt Ice Shelf to break off within the next few years. On 26 February 2021, the Iceberg A-74 duly broke away from the north-facing shelf, separating from the edge of the shelf at the McDonald Ice Rumples along the North Rift and finally joining the Brunt-Stancomb chasm. As of 28 February, A-74 was located at 75° 13' South, 25° 41' West and measures on its longest axis and on its widest axis.
On 23 January 2023, the second major calving from this area occurred when the crack known as Chasm-1 fully extended through the ice shelf, creating a iceberg. Chasm-1 had continued to grow since 2015 and by December 2022 extended across the entire ice shelf, marking the beginning of the calving event.
See also
* Brunt Basin * Emperor Bay *List of glaciers
A glacier ( ) or () is a persistent body of dense ice that is constantly moving under its own weight; it forms where the accumulation of snow exceeds its ablation (melting and sublimation) over many years, often centuries. Glaciers slowly defor ...
* List of Antarctic ice shelves
* List of Antarctic field camps
Many research stations in Antarctica support satellite field camps which are, in general, seasonal camps. The type of field camp can vary – some are permanent structures used during the annual Antarctic summer, whereas others are little more tha ...
References
*External links
* Ice shelves of Antarctica Bodies of ice of Coats Land {{CoatsLand-geo-stub