Nifty 11,680.35-290.7. Produced by Ian Coss, Steven Davy, David Evans, Alex Newman, Anna Pratt and Peter Thomson. Scientists race against time to find out. “When we have better data, better science, then we can make more informed decisions.”. A roughly 20-mile stretch of Thwaites had fractured into mile-long icebergs that were now being blown out into the bay in front of Thwaites. Get all the latest news and updates on Thwaites Glacier only on News18.com. Climate Change Once gone, surrounding glaciers will have no obstacle in their path, speeding up their melting and the potential release of enough water to raise sea levels by as much as 2.4m. Thwaites Glacier alone holds enough ice above sea level to raise sea levels by more than 65cm if it was to melt. NSF-NERC Thwaites Glacier Update. Environment. The West Antarctic Ice Sheet sits atop bowl-shaped bedrock and the West Antarctic shelf, which includes Thwaites, stabilizes the larger ice shelf. Thwaites Glacier. It was initially delineated from aerial photographs collected during Operation Highjump in January 1947. “Our challenge is that [sea levels are] going to keep going up,” said Julie Wormser from the Boston-area Mystic River Watershed Association. West Antarctica’s Thwaites Glacier covers 70,270 square miles (182,000 square km), the approximate size of Florida. The ultimate goal of the five-year research collaboration is to collect data — on the glacier itself, the bedrock beneath it, and the warm water melting it — that will improve models and fill in some of the unknowns about what the glacier’s collapse might look like. By Peter Sinclair | Nov 20, 2020 Runaway sea-level rise resulting from retreat of Antarctica's Thwaites glacier depends on humans' substantially cutting GHG emissions. From 1992 to 2011, the centre of the Thwaites grounding line retreated by nearly 14 kilometres (nine miles). Environment ‘Doomsday glacier’ melting due to warm water channels, scientists say. Thwaites Glacier. Is Thwaites Glacier doomed? Read all of the reporting from the eight-week expedition. Glaciers everywhere might be melting, but only one has earned the most terrifying nickname: the Doomsday Glacier. Thwaites Glacier Bed Topography & Marine Ice -Sheet Instability. Thwaites Glacier is one of the largest glaciers in West Antarctica covering a region of the size of Great Britain (see Fig. Credit: Courtesy of Rob Larter/ British Antarctic Survey. Roughly 90% of an ice sheet typically sits below the water line. In The Thwaites Glacier Tongue, or Thwaites Ice Tongue (75°0′S 106°50′W / 75.000°S 106.833°W), is about 50 km wide and has progressively shortened due to ice calving, based on the observational record. Once the glacier has retreated to a certain point, the tall cliffs of ice may crumble under their own weight. Coupled with the thinning of the glacier and its faster flow, “this [event] is one expression of the fact that Thwaites Glacier is putting more and more ice into the ocean.”. Joughin et al., 2014. World. Palmer icebreaker through March 2020, Antarctica melting: Climate change and the journey to the 'doomsday glacier', Scientists drill for first time on remote Antarctic Glacier, Undergraduate students contribute to Thwaites Glacier research, New study provides first evidence that thinning Antarctic ice shelves instantaneously result in more ice into the sea, Scientists Are Racing to Figure Out Why This Giant Glacier in Antarctica Is Melting So Fast, US PolarTREC teacher blogs about upcoming research cruise with THOR project, January 2020, Submarine to explore why Antarctic ice is melting so quickly, 'The closest thing on Earth to interplanetary travel', MELT Team at WAIS Divide with Icefin robotic underwater vehicle, Scientists embark on ambitious mission to Antarctica’s Thwaites Glacier, Antarctica Week - connecting schools and researchers, Briefing UK policymakers about Thwaites Glacier, These high-tech seals are charting future sea level rise, On a journey to Antarctica, a New Orleans chef awakens to the threat of melting ice, Journey to Antarctica: What We Learned in the Ice, Antarctica Dispatch 9: Thoughts on climate change and returning home. Our "Antarctic Field Update" education series helps keep you and your students informed about current research in the Amundsen Sea, Antarctica, from our scientists onboard the Research Vessel Nathaniel B. Palmer as they study ocean characteristics near the Thwaites Glacier. The craggy face of Thwaites loomed a few hundred feet away, but seemed almost close enough to touch, or at least within shouting distance. Thwaites Glacier is 120 km wide, fast-moving glacier located in Antarctica. But the wide range of scenarios possible by 2100 makes planning for century’s end impossible, according to Alisha Pegan, coordinator of the city’s Climate Ready Boston program. What exactly is the International Thwaites Glacier Collaboration? In a paper that outlined this marine ice cliff instability theory in 2016, authors Rob DeConto from the University of Massachusetts, Amherst, and David Pollard from Penn State University raised alarm by predicting that Antarctica by itself could contribute up to 3 feet of sea level rise by 2100. Journey to Antarctica: Is This What a Climate Catastrophe Looks Like in Real Time? “How quickly can you feasibly collapse something like Thwaites?” Graham said. More about our speakers . This submarine’s historic tour under Thwaites Glacier will help scientists predict sea level rise, On a journey to Antarctica, a New Orleans chef awakens to the threat of melting ice, These high-tech seals are charting future sea level rise, These scientists used small explosions to 'see' under Antarctica and measure how fast a key glacier will melt, For this marine tech, Antarctica’s Thwaites Glacier drives home threat of climate change, more than a quarter of the population would face inundation. Some communities are going beyond these national and international projections and incorporating potential melting from Antarctica’s ice sheets into their local sea level rise estimates. It's thought that rapidly warming temperatures caused by climate change are responsible for the vulnerable glacier's troubles. It has been a busy autumn (for those of us in the Northern Hemisphere) for the International Thwaites Glacier Collaboration (ITGC). Il a été ainsi nommé par l'ACAN1 en hommage à Fredrik T. Thwaites, géologue spécialiste des zones froides, géomorphologiste et professeur émérite à l'Université du Wisconsin à Madison2. No-one thinks this will happen in the short-to-medium term, but Thwaites is considered particularly vulnerable in a warming world, and scientists would like to know precisely how fast any changes might occur. “The entire embayment where we’d been working for several days was littered with icebergs.”. Thwaites Glacier. Scientists race against time to find out. The seafloor underneath the glacier slopes downward as it goes inland in what scientists call a “retrograde slope,” and the ice sitting on top of it gets thicker and thicker. But even the city government isn’t sure that level of protection is possible. The Thwaites Glacier has already shed a lot of ice into the ocean; it accounts for about four percent of global sea level rise. It is estimated that it would collapse into the sea in 200-900 years. Thwaites Glacier and the surrounding coastal region alone could raise sea levels by half a meter (1.6 feet) within 100 years. Il s’intègre plus généralement dans le continent Antarctique, qui avec le Groenland contient environ 99% de toute l’eau douce de la planète. The question then is what we choose to do about it. (British Antarctic Survey) (Supplied) The collapse of the Thwaites Glacier in West Antarctica could significantly affect global sea levels. A file photo of the research vessel that charted the Thwaites Glacier in 2019. That is one of the most important questions in the world today. 2. Thwaites Glacier), sometimes referred to as the Doomsday Glacier, is an unusually broad and vast Antarctic glacier flowing into the Pine Island Bay, part of the Amundsen Sea, east of Mount Murphy, on the Walgreen Coast of Marie Byrd Land Its surface speeds exceed 2 kilometres per year (1.2 miles per year) near its grounding line. In a future where carbon emissions continue unabated, warming air temperatures would force its collapse within 250 years. Dr. Julia Wellner is an Associate Professor at the University of Houston. Thwaites glacier, on the west of Antarctica, is a remote place, around 1000 miles from US and UK research stations. Its melting already contributes 4% to global sea-level rise each year. Une vaste cavité sous le glacier Thwaites en Antarctique Ouest a été repérée par la NASA.Mesurant 10 km de long, 4 km de large et 300 m de hauteur, cette cavité s’est ouverte à la base du glacier entre 2011 et 2016, séparant la glace du socle rocheux ouvrant la voie aux eaux chaudes provenant de l’océan et en le faisant fondre par en-dessous. Livable Planet. A recent study put the price tag of protecting the US from rising seas over the next two decades at more than $400 billion. “Thwaites is a very broad glacier that reaches deep into the West Antarctic Ice Sheet,” said Ted Scambos, research scientist at the Cooperative Institute for Research in Environmental Sciences (CIRES) and NSIDC. Its ice flow has accelerated by about 50-100 m per year since 2009. The Thwaites Glacier is extremely difficult for scientists to reach, but soon they will be able to get a much better picture of what's happening. Find all videogalleries including political news, current affairs and news headlines online on Thwaites Glacier … Here, warm water is pushed up onto the continental shelf, where it flows along the bottom until it reaches the floating ice shelf in front of Thwaites Glacier. As the ice shelf thins, it lifts away from the seafloor and loses its ability to act as a brake on the flow of ice from the continent. West Antarctica’s Thwaites Glacier covers 70,270 square miles (182,000 square km), the approximate size of Florida. “They filled in a lot of the [Boston] Harbor with horses and shovels,” Wormser said, “and they never contemplated sea level rise.”. Currently, Thwaites’ ice loss contributes approximately 4% to the annual rise in global sea-levels, with the potential to add 65cm in total should the whole glacier collapse. 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