And in October 2022, satellites spotted the world's largest iceberg, A-76A, as it entered the Drake Passage and began drifting toward the equator. 22 after an enormous chasm finally snapped the ice sheet in half. In early March, researchers from the British Antarctic Survey took the first aerial photographs of A81, an iceberg the size of Los Angeles that broke off from the Brunt Ice Shelf on Jan. Icebergs can dump a lot of fresh water as they melt, which can impact ecosystems and ocean currents as they slowly die: A68 dumped more than 1 trillion tons of water into the ocean over a period of three years.ī-22A is not the only major Antarctic iceberg to embark on a journey recently. Scientists will also track B-22A as it moves away from Antarctica to see where and when it will break apart. Massive Antarctic iceberg was ripped in two by powerful ocean currents Arctic 'ghost island' that vanished may have actually been a dirty iceberg World's largest iceberg disintegrates into 'alphabet soup,' NASA photo shows Therefore, it is important that researchers monitor any changes that may be triggered by an iceberg's departure. (A68 eventually broke apart after narrowly missing South Georgia.)ĭespite melting slower than originally thought, the Doomsday Glacier remains in a precarious situation, and recent research has shown that its melt rate could rapidly accelerate in the future. Experts feared that the mighty berg would become trapped on the surrounding seafloor, like B-22A, and that its cooling effect would drastically impact the ecosystem there. It broke off from the northern region of Antarctica's Brunt Ice. In spring 2020, alarms were raised when the world's formerly largest iceberg, A68, became set on a collision course with South Georgia, an island in the Southern Atlantic Ocean. The iceberg, called A-74, covers about 490 square miles (1,270 square kilometers), making it 1.5 times bigger than Greater Paris. Stationary icebergs can cool the surrounding waters, which can have a stabilizing effect on glaciers and other ice masses but also harm marine ecosystems if they get stuck further afield, according to the Earth Observatory. Scientists are particularly concerned about B-22A venturing away from Antarctica because it may impact the stability of the Thwaites Glacier. In March 2013, a massive iceberg named B-15T was spotted 13 years after breaking off from Antarctica, by which time it had circled half the continent. It's rare for the floating ice chunks to stay intact for more than a decade, but it is not unheard of. Once a large iceberg calves from an ice sheet or glacier, it normally takes only a few years to journey away from polar regions and into warmer waters, where it will eventually break apart. Navalny, the most prominent opponent of President Vladimir Putin, is already serving 11-1/2 years in the penal colony on charges including fraud that he says were trumped up to silence him.A time lapse of the iceberg moving away from Antarctica between Oct. Jailed Russian opposition politician Navalny gets 19 more years in prison We will continue our legal battle, says Purnesh Modi who filed defamation case against Rahul Gandhiįormer Gujarat minister Purnesh Modi had filed a criminal defamation case in 2019 against Rahul Gandhi over his 'How come all thieves have Modi as the common surname?' remark made during an election rally in Kolar in Karnataka on 13 April, 2019 It was then raised from a signal in monitoring to a variant V-23JUL-01 on July 31, 2023, due to the increasing number of genomes in UK In UK, new Covid-19 variant EG.5.1 descended from Omicron is now spreading rapidlyĮG.5.1 was first raised as a signal in monitoring on July 3, 2023, as part of horizon scanning due to increasing reports internationally, particularly in Asia. Follow us on Facebook, Twitter and Instagram. Read all the Latest News, Trending News, Cricket News, Bollywood News, While the impact of climate change is undeniable, the situation in Antarctica remains highly variable. Notably, the region had been experiencing rapid sea ice extent in the past few decades, ranging from record highs to record lows. The viral video has also grabbed thousands of views with several likes and retweets. In the meantime, the video of the giant iceberg is being widely shared on social media catching the attention of citizens and environmental experts. While this crack has not caused any damage or affected the surrounding, it is still uncertain whether the crack in the structure would trigger a speed-up in the flow of ice and further influence the behavior of other cracks. “Our science and operational teams continue to monitor the ice shelf in real-time to ensure it is safe, and to maintain the delivery of the science we undertake at Halley,” it said.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |