![]() Blind trailer: Sonam Kapoor is out to put an end to Purab Kohli’s baddie.Mumbai man gets 3 months in jail in drunk driving case.Mumbai: 3 held for robbing courier staffer of valuables worth Rs 33 lakh.‘AR Rahman had a dream and he got the tune,’ Rakeysh Omprakash Mehra reveals how Arziyan from Delhi 6 was created.Abdu Rozik to enter Bigg Boss OTT 2 as wildcard contestant: ‘Can’t wait to meet Salman Khan’.Hailey Bieber gets slammed for breaking wedding guest etiquette.US Supreme Court limits affirmative action: What this means The 1,255-sq-mile (3,250-sq-km) Larsen B ice shelf was known to be melting fast but no one had predicted that it would take just one month for the 200-metre-thick behemoth to completely. About 75 of Antarctica is buttressed by floating ice shelves (Fürst et al., 2016), which regulate the rate that grounded ice is lost to the ocean (Bell et al., 2018).Since the 1990s, many ice shelves have thinned, and in some cases disintegrated (Banwell et al., 2013 Robel & Banwell, 2019 Scambos et al.A74 has now drifted away from the Ice Shelf into the Weddell Sea. By 2020, another crack appeared further north and an iceberg (now known as A74) separated from the ice shelf in February 2021. In October 2016, a new crack known as Halloween Crack was detected around 17 kilometres North of the Halley Research Station. All data are sent back to Cambridge for analysis, so we know what is happening even in the Antarctic winter – when there are no staff on the station, it is dark for 24 hours and the temperature falls below minus 50 degrees C,” said Jane Francis, director of BAS, in a press statement. These measure how the ice shelf is deforming and moving, and are compared to satellite images from ESA, NASA and the German satellite TerraSAR-X. In the typically ice-free Southern Ocean, surveys of iceberg diameters show that most bergs have a typical diameter of 300500 metres (1,0001,600 feet). Measurements of the ice shelf are carried out multiple times a day using an automated network of high-precision GPS instruments that surround the station. A large iceberg about 20 times the size of Manhattan broke off the Brunt Ice Shelf in the Weddell Sea section of Antarctica during the past day, following the buildup of a large crack in the. “Our glaciologists and operations teams have been anticipating this event. The UK’s national polar research institute took the precaution of relocating Halley Research Station in 2016 when Chasm-1 began widening.Īlso read | Rocket Lab expands launch footprint with first mission from US The last major chunk to have come off in this area was in the early 1970s. Ecologists and others had feared that during its journey the iceberg might become. ![]() BAS has a research station located on the Brunt Ice Shelf called the Halley Research Station. At 490 square miles, the iceberg is bigger than the size of New York City, which is 302 square miles. In its prime, A68a was nearly 800 feet thick, though all but 120 feet of that was hidden below the waterline. The Brunt Ice Shelf has a complex glaciological structure, and the impact of calving events is unpredictable. Ice calving refers to the breaking off of ice chunks from the edge of an ice shelf or glacier. This is the second major “calving” incident in the area in the last two years, and it happened a decade after BAS scientists first detected the growth of vast cracks in the ice. The iceberg split from the ice shelf when a crack known as Chasm-1 fully extended through the shelf. The breakoff took place on January 23 between 12.30 AM and 1.30 AM IST. “Over coming weeks or months, the iceberg may move away or it could run aground and remain close to Brunt Ice Shelf,” Francis said in the statement.A gigantic iceberg measuring around 1,550 square kilometres, more than twice the size of the city of Mumbai, broke off from the 150 metres-thick Brunt Ice Shelf in Antarctica, according to the British Antarctic Survey (BAS). Scientists are now watching the iceberg to see what it will do next. “Change in the ice at Halley is a natural process and there is no connection to the calving events seen on Larsen C Ice Shelf, and no evidence that climate change has played a significant role,” according to the BAS. The ice shelf flows toward the sea at a rate of about 2 kilometers per year and icebergs break off at irregular intervals. There have been six Halley Research Stations in place on the Brunt Ice Shelf since 1956 to make atmospheric and space weather observations. ![]() Is an iceberg weighing hundreds of billions of tons on a penguin collision course?Īn even bigger iceberg broke away from the Larsen C Ice Shelf in 2017 and floated into the open ocean late last year. Iceberg A68a, photographed by European Space Agency satellite Sentinel-3 on December 9, approaches South Georgia in the South Atlantic. ![]()
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