12/9/2023 0 Comments Antarctica iceberg breaksIn May 2021, the world’s largest iceberg - four times the size of Abu Dhabi - fell into the ocean in Antarctica after breaking off from the Ronne Ice Shelf. Icebergs can dump a lot of fresh water as they melt, which can impact ecosystems and. This is the second major calving in the area in the past two years. Scientists will also track B-22A as it moves away from Antarctica to see where and when it will break apart. The floating ice shelf flows at a rate of up to 2km per year west towards the sea and calves off icebergs regularly. The station sits on Antarctica’s up to 150m-thick Brunt Ice Shelf. An iceberg about the size of the state of Delaware split off from Antarctica’s Larsen C ice shelf sometime between July 10 and July 12. Their work will continue until they are collected by aircraft on about February 6. Staff at the station maintain power supplies and facilities that keep the scientific experiments operating remotely through the winter. Since 2017, staff have been deployed to the station only during the Antarctic summer, from November to March. In 2016, BAS relocated the Halley Research Station 23km inland of Chasm-1 after it began to widen. Giant iceberg breaks away from Antarctic ice shelf. It further broke into a second iceberg (A-57b), which kept breaking up and eventually deteriorated. A-57a was the 57th iceberg to break off the continent’s A-quadrant since tracking began in the early 1970s. “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☌.” Research station relocated For example, researchers divided Antarctica into four quadrants (A, B, C, and D). During this time, B-22A drifted about 175 kilometers (110 miles). “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. It shows the berg sailing away from the continent between October 24, 2022, and March 26, 2023. “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,” she said.
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