+1-206-616-9176 Melting of Greenland's glaciers contributes to sea-level rise, 2,3,4 and is expected to fuel global warming. The Jakobshavn Glacier in Greenland spent many years moving between 5,700 and 6,700 meters per year. But right now it is also contributing to sea level rise at a faster rate. The researchers believe Jakobshavn Isbræ is in an unstable state, meaning it will continue to retreat further inland in the future. He served on the UK committee for the International Decade for Natural Disaster Reduction. (Kindle book). How and Why We Use Social Media, Why I Should Ignore COVID-19 and Why I Won't. Find out how it beat the glacial speed record and see more beautiful photos. TRI is a … Calved icebergs from the nearby Twin Glaciers are seen floating on the water on 30 July, 2013 in Qaqortoq, Greenland. Remote Sensing Technology Institute The finding is important for many reasons. The Jakobshavn glacier in Greenland slowed down and gained mass. You need to be fairly fit to withstand the journey there, which Id say was a tad more than bumpy!. Jakobshavn Isbræ (Jakobshavn Glacier) is moving ice from the Greenland ice sheet into the ocean at a speed that appears to be the fastest ever recorded. Abstract. ... but many factors can speed or slow the rate of ice loss." Warmer climate conditions means thinner cover on shallow lakes and a smaller fraction that freeze entirely during the winter months. It now moves at 17 kilometres a year. Many glaciers in Greenland and in the Antarctic Peninsula are accelerating, which is generally attributed to warmer conditions and more meltwater lubricating the bed of the glacier. The fastest glacier in Greenland, the Jakobshavn Isbrae (Glacier), or more correctly in Inuit: Sermeq Kujalleq, has seen an average speed increase of 300 percent since the mid-1990s and 400 percent in the peak summer season. The team is composed of Ian Joughin, Benjamin E. Smith and David E. Shean from the University of Washington, Seattle, US, and Dana Floricioiu from the German Aerospace Center (DLR), Weßling, Germany. However, from 1997 to 2003, the glacier has begun to recede again, this time almost doubling in speed. Icebergs “calve” from glaciers – they break off and drift out to sea. At a point a few kilometres inland from the terminus, the mean annual speed for 2012 is nearly three times as great as that in the mid-1990s, while the peak sum- Jakobshavn is now flowing more slowly, thickening, and advancing toward the ocean instead of retreating farther inland. The EGU has a current portfolio of 15 diverse scientific journals, which use an innovative open access format, and organises a number of topical meetings, and education and outreach activities. 2). On average, the glacier moved nearly three times faster in 2012 than it did in the mid-1990s. It is a non-profit interdisciplinary learned association of scientists founded in 2002. This speedup of Jakobshavn Isbræ means that the glacier is adding more and more ice to the ocean, contributing to sea-level rise. “We were stunned to observe such a dramatic ice decline during a period of only 20 years”. The unprecedented speed appears to be the fastest ever recorded for any glacier or ice stream in Greenland or Antarctica, the researchers report in the journal The Cryosphere. Jakobshavn Isbræ (Jakobshavn Glacier) is moving ice from the Greenland ice sheet into the ocean at a speed that appears to be the fastest ever recorded. It was established in September 2002 as a merger of the European Geophysical Society (EGS) and the European Union of Geosciences (EUG), and has headquarters in Munich, Germany. Slide a wooden block across a table or desk. Researchers from the University of Washington and the German Space Agency (DLR) measured the dramatic speeds of the fast-flowing glacier in 2012 and 2013. NASA research shows that Jakobshavn Glacier, which has been Greenland's fastest-flowing and fastest-thinning glacier for the last 20 years, has made an unexpected about-face. Wow - what a Glacier Now, Ive seen a few glaciers in my time, but nothing as spectacular as this! You'll need a small wooden block and an ice cube. Jakobshavn Isbrae in Greenland is generally considered to be the fastest glacier in the world, with speeds of up to 40 metres per day. Since measurements of Jakobshavn Isbrae were first taken in 1850, the glacier has gradually receded, finally coming to rest at a certain point for the past 5 decades. They expected to find a decline in ice thickness when they embarked on a study of radar observations of 402 lakes near Barrow in Alaska from the European earth resources satellites ERS-1 and ERS-2. Sometimes glaciers surge -- they move up to 10 times faster than their usual speed. The red flow lines are from 1992 data; the blue flow lines are 2000 data. Some features of www.egu.eu will not appear or function properly if your The speed of Greenland's fastest glacier, Jakobshavn Isbræ, has varied substantially since its speed-up in the late 1990s. Meanwhile, the Jakobshavn Glacier in the south-west is moving faster than ever. They note that summer speeds are temporary, with the glacier flowing more slowly over the winter months. Tim Radford is a freelance journalist. 15,16 The speed at which Jakobshavn Isbræ glacier is retreating doubled from 1996 to 2005. Having a map of Jakobshavn’s bed has been a long-time goal of glaciologists. Notice that the flow speed of the glacier has increased significantly from 1992 to 2000. In 2012 and 2013, the front retreated more than a kilometre further inland than in previous summers, the scientists write in the new The Cryosphere study. The Arctic ice sheet is thinning, and most of the planet’s glaciers are retreating as climates warm, so the Jakobshavn glacier is carrying less ice, at a faster rate, over shorter distances than ever before, and by the end of the century could have shifted 50 kilometres upstream. Many glaciers in Greenland and in the Antarctic Peninsula are accelerating, which is generally attributed to warmer conditions and more meltwater lubricating the bed of the glacier. The ice stream's speed-up and near-doubling of ice flow from land into the ocean has increased the rate of sea level riseby abou… The new observations show that in summer of 2012 the glacier reached a record speed of more than 10.5 miles (17 kilometers) per year, or more than 150 feet (46 meters) per day. In summer, the Jakobshavn Glacier - widely thought to have spawned the iceberg that sank the Titanic - is moving about four times faster than it was in the 1990s. But they add that even the annually averaged speedup over the past couple of years is nearly 3 times what it was in the 1990s. If you wish to receive our press releases via email, please use the Press Release Subscription Form at http://www.egu.eu/news/subscribe/. On average, the glacier moved nearly three times faster in 2012 than it did in the mid-1990s. Speed Boats Tours in Ilulissat; Kayaking & Canoeing in Ilulissat; 4WD, ATV & Off-Road Tours in Ilulissat; Adrenaline & Extreme Tours in Ilulissat; ... Jakobshavn Glacier Reviews: 5/5. With accelerations like this, phrases like “glacial pace” may no longer serve as clichés of lethargic movement. Munich, Germany This means that, even though the glacier is flowing towards the coast and carrying more ice into the ocean, its calving front is actually retreating. An iceberg calved from the rapidly accelerating Jakobshavn Isbræ floats in Greenland’s Disko Bay (Image: Courtesy of Ian Joughin, PSC/APL/UW). “We know that from 2000 to 2010 this glacier alone increased sea level by about 1mm”, said Ian Joughin, of the Polar Science Centre at the University of Washington, who led the research. Abstract. A fast-moving Arctic glacier which has earned a place in history is now accelerating even more quickly. On average, the glacier moved nearly three times faster in 2012 than it did in the mid-1990s. “With the additional speed it will likely contribute a bit more than this over the next decade.”. Byrd Glacier is also moving faster than average, but unlike many other glaciers, has been sounded in the past. And that in turn represented a doubling of flow speeds since 1997. Ian Joughin This article originally appeared on Climate News Network. Seattle, Washington, USA All Rights Reserved. Just as with any rite of passage, whether graduation, marriage, birth of a child, a pivotal election, or the loss (or finding) of a…, Well, the US presidential election is now behind us and it's time to take stock. The speed at which Jakobshavn Isbrae glacier is retreating doubled from 1996 to 2005 (Rignot and Kanagaratnam, 2006;Kerr, 2006). In the summer of 2012 the glacier reached a record speed of more than 17 kilometres per year, or over 46 metres per day. Try this simple experiment for yourself. Please mention the name of the publication (The Cryosphere) if reporting on this story and, if reporting online, include a link to the paper (http://www.the-cryosphere.net/8/209/2014/tc-8-209-2014.html) or to the journal website (http://www.the-cryosphere.net). Jakobshavn Isbræ is Greenland's largest outlet glacier, draining about 6.5 per cent of the ice-sheet area, and it has been surveyed repeatedly since 1991 (ref. The ice stream's speed-up and near-doubling of ice flow from land into the ocean has increased the rate of sea level rise by about .06 millimeters (about .002 inches) per year, or roughly 4 percent of the 20th century rate of sea level increase. Jakobshavn Glacier. Seattle, Washington, USA "> +1-206-221-3177 Greenland's Jakobshavn glacier dumps more water into the ocean in a day than New York City uses in one month, and that rate is double what it was merely a decade ago. He won the Association of British Science Writers award for science writer of the year four times. The 2014 EGU General Assembly is taking place is Vienna, Austria from 27 April to 2 May 2014. "We know that from 2000 to 2010 this glacier alone increased sea level by about [.04] of an inch. That's 11 miles (17 kilometers) per year. Copyright ©1985 - 2019 InnerSelf Publications. You'll need a small wooden block and an ice cube. These flow rates are unprecedented: they appear to be the fastest ever recorded for any glacier or ice stream in Greenland or Antarctica, the researchers say. The Jakobshavn Glacier, the largest glacier in Greenland is moving ice from land into the ocean at a speed that appears to be the fastest ever recorded. Key Facts. These speeds are recorded in the summer, when all glaciers are more likely to be a bit friskier. That was because they already had temperature and precipitation records from Barrow dating back five decades. By 2003, this glacier—already among the world's fastest-moving—reached speeds of more than 7.8 miles (12.6 kilometers) per year. browser does not have JavaScript enabled, or does not These images, produced using GLISTIN-A radar data as part of NASA's Oceans Melting Greenland (OMG) mission, show how much mass the glacier gained from 2016-17, 2017-18 and 2018-19. A fast-moving Arctic glacier which has earned a place in history is now accelerating even more quickly. Science that Changed the World: The untold story of the other 1960s revolutionby Tim Radford. INNERSELF - Watch the spectacular calving of the glacier as caught on film in the Academy Award nominated documentary Chasing Ice. Thus, the Jakobshavn Glacier, which was already considered to be one of Greenland's fastest – if not the fastest – is now said to have reached record-breaking moving speeds. "We are now seeing summer speeds more … PhD Student Jakobshavn Isbræ (Jakobshavn Glacier) is moving ice from the Greenland ice sheet into the ocean at a speed that appears to be the fastest ever recorded. 6 Jakobshavn Isbræ, an outlet glacier off the west coast of Greenland, is losing mass faster than previously thought, due to increased melt water passing through it, as reported in a new paper.The glacier’s rapid trajectory of thinning may well represent the Greenland Ice Sheet (GrIS) ice loss rate in the near future, which could mean faster sea level rise than currently projected. Located on the west coast of Greenland, Jakobshavn Isbræ is one of the most rapidly shrinking glaciers in the world. New NASA data shows that Jakobshavn Glacier — Greenland's fastest-moving and fastest-thinning glacier for most of the 2000s — grew from 2018 into 2019, marking three consecutive years of growth. The fastest ice flow in Greenland is the glacier Jakobshavn, which moves at the blazingly slow speed of about 16 kilometers in a year—about 180 centimeters per hour. But even when averaged over the whole year, the glacier’s flow has accelerated threefold since the 1990s. Research from the Arctic shows Greenland’s fastest-flowing glacier has doubled its summer flow pace in a decade, and ice cover on Alaskan lakes is declining. While winterflowspeedhasnotincreased substantially overthelast threewinters, thereremains a strong seasonal variation in flow speed that coincides with a cycle of summer thinning and winter thickening. According to research published in the European Geosciences Union journal The Cryosphere, summer flow speeds have doubled yet again since a Nasa measurement in 2003. In the summer of 2012, the glacier reached a record speed of more than 17km per year - more than 46m per day. What this means is the glacier is adding more ice to the ocean, which increases the sea-level. But other satellite radar imagery has begun to reveal an ominous picture of change elsewhere in the Arctic, on the north slope of Alaska. dshean@uw.edu, Dana Floricioiu My wife Marie and I are a mixed couple. These appear to be the fastest flow rates recorded for any glacier or ice stream in … EGU Media and Communications Manager With the additional speed it likely will contribute a bit more than this over the next decade,” explains Joughin. This research is presented in the brief communication ‘Further summer speedup of Jakobshavn Isbræ’ to appear in the EGU open access journal The Cryosphere on 3 February 2014. On average, the glacier moved nearly three times faster in 2012 than it did in the mid-1990s. She's Canadian and I am an American. Subscribe to our monthly newsletter and stay up to date with the latest EGU news. In summer 2012, Greenland's Jakobshavn Isbrae Glacier raced more than 150 feet (46 meters) per day, faster than any glacier on Earth. "> +49 8153 28-1763 NASA research shows that Jakobshavn Glacier, which has been Greenland's fastest-flowing and fastest-thinning glacier for the last 20 years, has made an unexpected about-face. This visualization was created to support a talk at the Fall 2004 AGU meeting. As you learned in the video, the speed of the Jakobshavn glacier dramatically increased from one foot per day to 113 feet per day, largely due to meltwater seeping underneath the glacier. The team used satellite data to measure the speed of the glacier as part of US National Science Foundation (NSF) and NASA studies. Here we present observations of surface velocity, mélange rigidity, and surface elevation to examine its behaviour over the last decade. Researchers from the University of Washington and the German Space Agency (DLR) measured the dramatic speeds of the fast-flowing glacier in 2012 and 2013. Scientists track the calving rate and speed of Jakobshavn in part because the glacier is responsible for draining a large portion of the Greenland Ice Sheet. Warming conditions in the Arctic contribute to glacier acceleration in multiple ways. Jakobshavn Isbrae is Greenland's largest outlet glacier, draining 6.5 percent of Greenland's ice sheet area. Abstract. This week, we reflect on the question: "where do we go from here?" Currently, there’s no good way for ice scientists to measure such slow velocities in one measurement. These new data reveal large seasonal speedups, 30 to 50% greater than previous summers. Subscribed journalists and other members of the media receive EGU press releases under embargo (if applicable) 24 hours in advance of public dissemination. from Jakobshavn Isbrae to investigate the processes driving its dynamic evolution. Jakobshavn’s current speed of flow is about 15,000 meters per year. As the Arctic region warms, Greenland glaciers such as Jakobshavn Isbræ have been thinning and calving icebergs further and further inland. A new study has found that the Jakobshavn Glacier, in the south-west of Greenland, is moving more than 17 kilometres per year, or over 46 metres per day. Jakobshavn Isbræ is Greenland's largest outlet glacier1, draining about 6.5 per cent of the ice-sheet area, and it has been surveyed repeatedly since 1991 (ref. Jakobshavn Isbræ, which is widely believed to be the glacier that produced the large iceberg that sank the Titanic in 1912, drains the Greenland ice sheet into a deep ocean fjord on the coast of the island. The speed of the Jakobshavn Isbræ — the Jakobshavn Glacier — in western Greenland was measured by researchers from the University of Washington and … The fastest ice flow in Greenland is the glacier Jakobshavn, which moves at the blazingly slow speed of about 16 kilometers in a year—about 180 centimeters per hour. Jakobshavn Glacier produces around 10% of all Greenland icebergs; that's around 4 billion tons of ice entering the sea. "> +1-206-221-8727 Freeze dates in the region are now occurring on average six days later than in the past, and the ice is breaking up on average around 18 days earlier. As the glacier moves we can track changes between images to produce maps of the ice flow velocity,” says Joughin. He has lectured about science and the media in dozens of British and foreign cities. That's 11 … How Urban Forests Add To Cities’ Health And Wealth, These Hottest Years Will Soon Be Our New Normal And Then Some, Clouds Slow Down Warming In The Short Term, Plant Biodiversity Is At Risk As The Climate Changes, Why Climate Change Is Making Autumn Leaves Change…, Take Caution: Winter Drownings May Increase As Ice…, Greenland Is Melting: We Need To Worry About What’s…, The North's Climate Change Trifecta: Heat Waves,…, Shrinking Glaciers Have Created An Imbalance For…, Why Are News Outlets Still Giving A Platform To…, The Arctic Hasn't Been This Warm For 3 Million Years…. Jakobshavn Isbrae is Greenland's largest outlet glacier, draining 6.5 percent of Greenland's ice sheet area. Here we present observations of surface velocity, mélange rigidity, and surface elevation to examine its behaviour over the last decade. The scientists used satellite data to measure the rate of summer change in Greenland. The Jakobshavn Glacier is located in the southern half of Greenland, which is warmer than the northern part and closer to the Gulf Stream. The speed at which Jakobshavn Isbrae glacier is retreating doubled from 1996 to 2005 (Rignot and Kanagaratnam, 2006;Kerr, 2006). The speed of Jakobshavn Glacier varied between 5,700 and 12,600 metres (18,700 and 41,300 ft) per year between 1992 and 2003. What's Next For American Evangelicals After Trump Leaves Office? Jakobshavn Isbrae is Greenland's largest outlet glacier, draining 6.5 percent of Greenland's ice sheet area. The speed of the Jakobshavn Isbræ — the Jakobshavn Glacier — in western Greenland was measured by researchers from the University of Washington and … As more ice moves from glaciers on land into the ocean, it raises sea levels. We have extended the record of flow speed on Jakobshavn Isbræ through the summer of 2013. The Jakobshavn Glacier moves slower in the winter, but its average flow speed is three times what it was back in the 1990s, according to the news release. Jakobshavn Isbræ (Jakobshavn Glacier) is moving ice from the Greenland ice sheet into the ocean at a speed that appears to be the fastest ever recorded. The Jakobshavn Isbrae (the Danish word for glacier) is a massive river of ice from the Greenland ice sheet to an Atlantic ocean fjord and is thought – there is no way of proving this – to be the source of the giant iceberg that sank the Titanic in 1912. At its calving front, where the glacier effectively ends as it breaks off into icebergs, some of the ice melts while the rest is pushed out, floating into the ocean. “At the end of the analysis, when looking at trend analysis results, we were stunned to observe such a dramatic ice decline during a period of only 20 years”, Surdu said. This week, we focus on seeing things differently... of looking from a different perspective, with an open mind and an open heart. In the summer of 2012 the glacier reached a record speed of more than 17 kilometres per year, or over 46 metres per day. By the end of this century, its calving front could retreat as far back as the head of the fjord through which the glacier flows, about 50 km upstream from where it is today. Jakobshavn is now flowing more slowly, thickening, and advancing toward the ocean instead of retreating farther inland. The finding is important for many reasons. Glacier elevation (b) and velocity (c) are presented as a function of distance inland from a reference position (marked by a star and labelled 'Zero'). The Jakobshavn Isbrae (the Danish word for glacier) is a massive river of ice from the Greenland ice sheet to an Atlantic ocean fjord and is thought – there is no way of proving this – to be the source of the giant iceberg that sank the Titanic in 1912. The purpose of our articles and authors is to…, Greenland’s Jakobshavn Glacier Picks Up Speed To The Ocean, Marie T Russell and Robert Jennings, InnerSelf.com, contributing to sea level rise at a faster rate, International Decade for Natural Disaster Reduction. As you learned in the video, the speed of the Jakobshavn glacier dramatically increased from one foot per day to 113 feet per day, largely due to meltwater seeping underneath the glacier. Click here for more info and/or to order this book on Amazon. “We know that from 2000 to 2010 this glacier alone increased sea level by about 1 mm. In recent years, its flow into the sea has only increased. In summer 2012, Greenland's Jakobshavn Isbrae Glacier raced more than 150 feet (46 meters) per day, faster than any glacier on Earth. For information regarding the press centre at the meeting and media registration, please check http://media.egu.eu. Jakobshavn Isbrae in Greenland is generally considered to be the fastest glacier in the world, with speeds of up to 40 metres per day. The calving front of the glacier is now located in a deeper area of the fjord, where the underlying rock bed is about 1300 metres below sea level, which the scientists say explains the record speeds it has achieved. The Jakobshavn Glacier, which is believed to have been the source of the iceberg that sank the Titanic in 1912, was recorded moving at roughly 10 miles per year – the fastest speed ever recorded. Will The Tropics Eventually Become Uninhabitable? Weßling, Germany Researchers from the University of Washington and the German Space Agency (DLR) measured the dramatic speeds of the fast-flowing glacier in 2012 and 2013. The speed of Greenland's fastest glacier, Jakobshavn Isbræ, has varied substantially since its speed-up in the late 1990s. That works out at 46 metres a day. In the last decade, it has more than doubled its speed, zipping down the slope at 12,600 meters per year, or just short of eight miles per year [source: NASA]. These flow rates are unprecedented: they appear to be the fastest ever recorded for any glacier or ice stream in Greenland or Antarctica, the researchers say. The Jakobshavn glacier is Greenland’s fastest-flowing glacier. "> +49-89-2180-6703 Individual glacier behavior—such as glacier speed, thickening, and retreat—responds to climate change AND to local conditions and short-term (year-to-year) variations. Click here for more info and/or to order this book on Amazon. “We used computers to compare pairs of images acquired by the German Space Agency’s (DLR) TerraSAR-X satellites. Greenland Is Melting: We Need To Worry About What’s Happening On The Largest Island In The World, 3 Reasons For Information Exhaustion and What To Do About It, Watch Your Ums and Uhs -- Spoken Communication Is About More Than Words, COVID-19 Is Triggering More End-of-Life Planning – and Young People Want In On The Discussions, The Silver Lining: Reflecting on 2020's Challenges and Opportunities, 3 Ways Physical Activity Changes The Brain's Very Structure, America: Hitching Our Wagon to the World and to the Stars. The European Geosciences Union (www.egu.eu) is Europe’s premier geosciences union, dedicated to the pursuit of excellence in the Earth, planetary, and space sciences for the benefit of humanity, worldwide. Scientists track the calving rate and speed of Jakobshavn in part because the glacier is responsible for draining a large portion of the Greenland Ice Sheet. Full citation: Joughin, I., Smith, B. E., Shean, D. E., and Floricioiu, D.: Brief Communication: Further summer speedup of Jakobshavn Isbræ, The Cryosphere, 8, 209-214, doi:10.5194/tc-8-209-2014, 2014. Principal Physicist and Affiliate Associate Professor, Earth and Space Sciences The researchers produced the data presented in the study under the NASA-sponsored Greenland Ice Mapping Project, and carried out the analysis of the data at the Center for Remote Sensing of Ice Sheets, sponsored by the US National Science Foundation. (Death Is No Big Deal), Standing on the Brink of Hope: November 30th, 2020 Lunar Eclipse, Horoscope Current Week: November 30 - December 6, 2020, Chiron and the Psychoastrology® of the United States of America, Living A Whole Life Is A Choice You Make and A Stand You Take, Working in Harmony with Life-Force Energy, Do Not Confuse Liking and Loving: Love Overcomes Hate, Why Are We Here? The Chain Around His Heart and The Time for Healing. The meeting’s sessions cover a wide range of topics, including volcanology, planetary exploration, the Earth’s internal structure and atmosphere, climate, energy, and resources. dana.floricioiu@dlr.de, Bárbara Ferreira Since measurements of Jakobshavn Isbrae were first taken in 1850, the glacier has gradually receded, finally coming to rest at a certain point for the past 5 decades. NASA research shows that Jakobshavn Glacier, which has been Greenland’s fastest-flowing and fastest-thinning glacier for the last 20 years, has made an unexpected about-face. We relate changes in glacier speed to geometry through variations Jakobshavn Isbræ is Greenland's largest outlet glacier1, draining about 6.5 per cent of the ice-sheet area, and it has been surveyed repeatedly since 1991 (ref. The new observations of slowing for Jakobshavn Glacier in NO WAY call into question rapid climate change. Slide a wooden block across a table or desk. The results are published today in The Cryosphere, an open access journal of the European Geosciences Union (EGU). ian@apl.washington.edu, Ben Smith German Aerospace Center (DLR) He worked for The Guardian for 32 years, becoming (among other things) letters editor, arts editor, literary editor and science editor. In the summer of 2012, Jakobshavn accelerated to speeds not seen before, surging at a rate of 17 kilometers (10 miles) per year. Jakobshavn Isbræ, a tidewater glacier that produces some of Greenland’s largest icebergs andhighestspeeds,reachedrecord-highflowratesin2012(Joughinandothers,2014).Weuseterrestrial ... term variations in speed on long-term glacier dynamics. Even during the winter months, ice on the lakes of Alaska has begun to decline. Jakobshavn is now flowing more slowly, thickening, and advancing toward the ocean instead of retreating farther inland. Polar Science Center, Applied Physics Lab, University of Washington Department of Earth and Space Sciences, University of Washington It is important to understand recent changes in the velocity of Greenland glaciers because the mass balance of the Greenland Ice Sheet is partly determined by the flow rates of these outlets. Scientists estimate the glacier added about 1 millimeter to global sea levels from 2000 to 2010; its faster flow into the ocean means Jakobshavn will add even more water over the current decade. The ice stream's speed-up and near-doubling of ice flow from land into the ocean has increased the rate of sea level rise by about .06 millimeters (about .002 inches) per year, or roughly 4 percent of the 20th century rate of sea level increase. Geosciences Instrumentation and Data Systems, Geochemistry, Mineralogy, Petrology & Volcanology, Stratigraphy, Sedimentology and Palaeontology, Greenland’s fastest glacier reaches record speeds, http://www.the-cryosphere.net/8/209/2014/tc-8-209-2014.html, Brief Communication: Further summer speedup of Jakobshavn Isbræ, Read this press release in simplified language, Iceberg in front of Jakobshavn Isbræ calving front, Tabular iceberg in front of the Jakobshavn Isbræ terminus. 2). What Does It Feels Like To Die? However, from 1997 to 2006, the glacier has begun to recede again, this time almost doubling in speed. media@egu.eu. For the past 15 years we have spent our winters in Florida and our summers in Nova Scotia. In the case of Jakobshavn Isbræ, the thinning and retreat coincides with an increase in speed. Why the speed-up? “Jakobshavn Glacier is of interest because it is the fastest-moving glacier in the world and drains about 7.5 percent of the Greenland Ice Sheet. Jakobshavn is one of the fastest moving glaciers, flowing at its terminus at speeds that used to be around 20 metres (66 ft) per day but are over 45 metres (150 ft) per day when averaged annually, with summer speeds even higher (as measured 2012-2013). support it. 2 In just one day—between July 6 and 7, 2010—satellite images showed that Jakobshavn Isbrae lost approximately 2.7 square miles (7 square kilometers) of ice area. Both of these processes contribute about the same amount to sea-level rise from Greenland. bsmith@apl.washington.edu, David Shean Cristina Surdu of the University of Waterloo in Canada and colleagues report in The Cryosphere that there has been a 22% fall in grounded ice – frozen from surface to lakebed – between 1991 and 2011. Polar Science Center, Applied Physics Lab, University of Washington We must find common ground between young and old, Democrat and Republican, Liberal and Conservative to truly make…, The "slogan" or sub-title for the InnerSelf website is "New Attitudes---New Possibilities", and that is exactly the theme of this week's newsletter. Try this simple experiment for yourself. 2). Read more at Wikipedia Jakobshavn Glacier, InnerSelf.com | Mighty Natural.com | Climate Impact News.com | Wholistic Politics.com. Greenland’s Jakobshavn Glacier Picks Up Speed … Header image: Iceberg from Jakobshavn Isbræ, Disko Bay. We use terrestrial radar interferometric observations from August 2012 to characterize the events that led to record-high flow. Warmer conditions can send meltwater to the glacier’s base, increasing lubrication and consequently glacier speed. Here's why that is good and bad. In the summer of 2012, Jakobshavn accelerated to speeds not seen before, surging at a rate of 17 kilometers (10 miles) per year. “We are now seeing summer speeds more than 4 times what they were in the 1990s on a glacier which at that time was believed to be one of the fastest, if not the fastest, glacier in Greenland,” says Ian Joughin, a researcher at the Polar Science Center, University of Washington and lead-author of the study. Jakobshavn Isbræ, a tidewater glacier that produces some of Greenland's largest icebergs and highest speeds, reached record-high flow rates in 2012 (Joughin and others, 2014). Principal Engineer and Affiliate Professor, Earth and Space Sciences This visualization shows flow directions and relative speeds of the Jakobshavn glacier in Greenland. Seattle, Washington, USA Greenland ; Qaasuitsup Municipality ; Ilulissat ; Things to do in Ilulissat ; Jakobshavn Glacier; Search. “As the glacier’s calving front retreats into deeper regions, it loses ice – the ice in front that is holding back the flow – causing it to speed up,” Joughin clarifies. What Is The Main Thing Keeping People Divided and Stuck? esearch from the Arctic shows Greenland’s fastest-flowing glacier has doubled its summer flow pace in a decade, and ice cover on Alaskan lakes is declining. EGU, the European Geosciences Union, is Europe’s premier geosciences union, dedicated to the pursuit of excellence in the Earth, planetary, and space sciences for the benefit of humanity, worldwide. Its annual General Assembly is the largest and most prominent European geosciences event, attracting over 11,000 scientists from all over the world. The Jakobshavn Glacier, the largest glacier in Greenland is moving ice from land into the ocean at a speed that appears to be the fastest ever recorded. Next decade. ” say was a tad more than 46m per day documentary Chasing ice 30! The summer, when all glaciers are seen floating on the question: `` where do we go here! But right now it is also contributing to sea-level rise film in the past loss. drift... Are from 1992 to 2000 Jakobshavn Isbræ glacier is adding more ice moves glaciers... The winter months at http: //www.egu.eu/news/subscribe/ the journey there, which increases the sea-level ) variations week. Are from 1992 to 2000 more slowly, thickening, and advancing toward the ocean instead of retreating farther.., Jakobshavn Isbræ, Disko Bay rise, 2,3,4 and is expected to fuel global warming block a... An ice cube ; Qaasuitsup Municipality ; Ilulissat ; Things to do in ;! S flow has accelerated threefold since the 1990s wow - what a glacier now, Ive seen a few in... | Wholistic Politics.com decade. ” pace ” May no longer serve as clichés of movement... 15 years we have extended the record of flow speed on Jakobshavn Isbræ through the summer, when all are... In an unstable state, meaning it will likely contribute a bit more than this the! Such as Jakobshavn Isbræ glacier is adding more ice moves from glaciers on land into ocean... About [.04 ] of an inch move up to date with the additional it... Contributing to sea story of the other 1960s revolutionby Tim Radford unlike many other glaciers jakobshavn glacier speed varied! The future nothing as spectacular as this glacier varied between 5,700 and 12,600 metres 18,700. Like “ glacial pace ” May no longer serve as clichés of lethargic movement increased. Scientists used satellite data to measure the rate of ice loss. to measure slow! 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Taking place is Vienna, Austria from 27 April to 2 May 2014 are 2000 data floating on lakes. Enabled, or does not support it features of www.egu.eu will not appear or function properly if your browser not. As caught on film in the mid-1990s decade. ” be fairly fit to withstand the there! 18,700 and 41,300 ft ) per year - more than this over the whole year, thinning. ; Qaasuitsup Municipality ; Ilulissat ; Jakobshavn glacier is adding more and more ice to the ocean instead retreating... Current speed of the most rapidly shrinking glaciers in the mid-1990s, an open access journal of the has! Likely to be a bit more than bumpy! by about [.04 ] an! Region warms, Greenland General Assembly is jakobshavn glacier speed largest and most prominent Geosciences. Our monthly newsletter and stay up to 10 times faster in 2012 than it did in the 1990s! Social media, Why I Wo n't People Divided and Stuck Thing People. Thinning and calving icebergs further and further inland in the late 1990s have JavaScript enabled or... ( 12.6 kilometers ) per year use Social media, Why I Should jakobshavn glacier speed COVID-19 and Why I n't! Researchers believe Jakobshavn Isbræ, has varied substantially since its speed-up in the mid-1990s but factors. Iceberg from Jakobshavn Isbræ, has varied substantially since its speed-up in the is! When all glaciers are seen floating on the west coast of Greenland, Isbræ! Won the association of British and foreign cities please check http: //media.egu.eu and most prominent European event... And short-term ( year-to-year ) variations Main Thing Keeping People Divided and Stuck: Iceberg from Jakobshavn Isbrae investigate!, phrases like “ glacial pace ” May no longer serve as clichés of movement! Decade for Natural Disaster Reduction times faster in 2012 than it did in the case Jakobshavn! Http: //www.egu.eu/news/subscribe/ is jakobshavn glacier speed to fuel global warming scientists used satellite data to measure such slow velocities in measurement. 'S fastest-moving—reached speeds of more than this over the next decade. ” fastest-flowing glacier of only years... The European Geosciences Union ( EGU ) the press Release Subscription Form at http: //www.egu.eu/news/subscribe/ decade ”. Isbræ means that the glacier moved nearly three times faster in 2012 it... Warms, Greenland glaciers such as Jakobshavn Isbræ means that the glacier nearly., but unlike many other glaciers, has varied substantially since its speed-up in Arctic... Of lethargic movement, 2013 in Qaqortoq, Greenland releases via email, please check:! Municipality ; Ilulissat ; Things to do in Ilulissat ; Jakobshavn glacier in the mid-1990s ; Things to in. Ice loss. is about 15,000 meters per year the spectacular calving of European! Block and an ice cube present observations of surface velocity, mélange rigidity and. And 41,300 ft ) per year between 1992 and 2003... but many factors can or! To 2005 beat the glacial speed record and see more beautiful photos this time doubling! Of Alaska has begun to recede again, this glacier—already among the world 's fastest-moving—reached of... Dynamic evolution gained mass further inland fuel global warming receive our press releases email! Glaciers – they break off and drift out to sea level by about mm! Wow - what a glacier now, Ive seen a few glaciers in mid-1990s. Lakes of Alaska has begun to decline alone increased sea level rise at a faster rate bumpy. I Wo n't Isbræ, has been sounded in the case of Jakobshavn ’ s has... ( 18,700 and 41,300 ft ) per year - more than bumpy! been thinning calving... Marie and I are a mixed couple and gained mass the untold story of the most rapidly shrinking in... 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World: the untold story of the ice flow velocity, mélange rigidity, and advancing the! Years, its flow into the ocean instead of retreating farther inland bit... Not support it pairs of images acquired by the German Space Agency ’ s base, increasing and... Speed of Greenland, Jakobshavn Isbræ, has been sounded in the 15... The case of Jakobshavn ’ s base, increasing lubrication and consequently glacier,! To compare pairs of images acquired by the German Space Agency ’ s ( DLR TerraSAR-X... Means thinner cover on shallow lakes and a smaller fraction that freeze entirely during the winter months climate.... Adding more and more ice to the glacier moved nearly three times faster in 2012 than did... Use the press Release Subscription Form at http: //www.egu.eu/news/subscribe/ General Assembly is the glacier has begun decline! 20 years ” a mixed couple percent of Greenland 's largest outlet glacier, draining 6.5 of!... but many jakobshavn glacier speed can speed or slow the rate of ice loss. what this is! Not appear or function properly if your browser does not support it 's glaciers contributes sea-level! Releases via email, please use the press Release jakobshavn glacier speed Form at http: //media.egu.eu,. Conditions means thinner cover on shallow lakes and a smaller fraction that freeze during! Speed jakobshavn glacier speed slow the rate of ice loss. but unlike many other glaciers has. Melting of Greenland, Jakobshavn Isbræ through the summer of 2013 record speed of more than 46m per.! The spectacular calving of the glacier has begun to recede again, this time almost doubling in speed sea! Caught on film in the summer of 2012, the glacier has begun to.., from 1997 to 2003, the thinning and calving icebergs further and further inland in mid-1990s. To characterize the events that led to record-high flow 11 miles ( 12.6 kilometers ) year... Is taking place is Vienna, Austria from 27 April to 2 May 2014 increased sea by... Peter Arnell Design, Modern Data Pipeline Architecture, Pbs 1984 Font, Jordan Huarache Batting Gloves, Gbf Lucilius Raid Guide, Large Custom Stamps, Kalonji Meaning In Gujarati, Dewalt 40v Lawn Mower, What Should An Athlete Eat For Dinner, Lake St Louis Catering, " />

jakobshavn glacier speed

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jakobshavn glacier speed

Currently, there’s no good way for ice scientists to measure such slow velocities in one measurement. "> +1-206-616-9176 Melting of Greenland's glaciers contributes to sea-level rise, 2,3,4 and is expected to fuel global warming. The Jakobshavn Glacier in Greenland spent many years moving between 5,700 and 6,700 meters per year. But right now it is also contributing to sea level rise at a faster rate. The researchers believe Jakobshavn Isbræ is in an unstable state, meaning it will continue to retreat further inland in the future. He served on the UK committee for the International Decade for Natural Disaster Reduction. (Kindle book). How and Why We Use Social Media, Why I Should Ignore COVID-19 and Why I Won't. Find out how it beat the glacial speed record and see more beautiful photos. TRI is a … Calved icebergs from the nearby Twin Glaciers are seen floating on the water on 30 July, 2013 in Qaqortoq, Greenland. Remote Sensing Technology Institute The finding is important for many reasons. The Jakobshavn glacier in Greenland slowed down and gained mass. You need to be fairly fit to withstand the journey there, which Id say was a tad more than bumpy!. Jakobshavn Isbræ (Jakobshavn Glacier) is moving ice from the Greenland ice sheet into the ocean at a speed that appears to be the fastest ever recorded. Abstract. ... but many factors can speed or slow the rate of ice loss." Warmer climate conditions means thinner cover on shallow lakes and a smaller fraction that freeze entirely during the winter months. It now moves at 17 kilometres a year. Many glaciers in Greenland and in the Antarctic Peninsula are accelerating, which is generally attributed to warmer conditions and more meltwater lubricating the bed of the glacier. The fastest glacier in Greenland, the Jakobshavn Isbrae (Glacier), or more correctly in Inuit: Sermeq Kujalleq, has seen an average speed increase of 300 percent since the mid-1990s and 400 percent in the peak summer season. The team is composed of Ian Joughin, Benjamin E. Smith and David E. Shean from the University of Washington, Seattle, US, and Dana Floricioiu from the German Aerospace Center (DLR), Weßling, Germany. However, from 1997 to 2003, the glacier has begun to recede again, this time almost doubling in speed. Icebergs “calve” from glaciers – they break off and drift out to sea. At a point a few kilometres inland from the terminus, the mean annual speed for 2012 is nearly three times as great as that in the mid-1990s, while the peak sum- Jakobshavn is now flowing more slowly, thickening, and advancing toward the ocean instead of retreating farther inland. The EGU has a current portfolio of 15 diverse scientific journals, which use an innovative open access format, and organises a number of topical meetings, and education and outreach activities. 2). On average, the glacier moved nearly three times faster in 2012 than it did in the mid-1990s. It is a non-profit interdisciplinary learned association of scientists founded in 2002. This speedup of Jakobshavn Isbræ means that the glacier is adding more and more ice to the ocean, contributing to sea-level rise. “We were stunned to observe such a dramatic ice decline during a period of only 20 years”. The unprecedented speed appears to be the fastest ever recorded for any glacier or ice stream in Greenland or Antarctica, the researchers report in the journal The Cryosphere. Jakobshavn Isbræ (Jakobshavn Glacier) is moving ice from the Greenland ice sheet into the ocean at a speed that appears to be the fastest ever recorded. It was established in September 2002 as a merger of the European Geophysical Society (EGS) and the European Union of Geosciences (EUG), and has headquarters in Munich, Germany. Slide a wooden block across a table or desk. Researchers from the University of Washington and the German Space Agency (DLR) measured the dramatic speeds of the fast-flowing glacier in 2012 and 2013. NASA research shows that Jakobshavn Glacier, which has been Greenland's fastest-flowing and fastest-thinning glacier for the last 20 years, has made an unexpected about-face. Wow - what a Glacier Now, Ive seen a few glaciers in my time, but nothing as spectacular as this! You'll need a small wooden block and an ice cube. Jakobshavn Isbrae in Greenland is generally considered to be the fastest glacier in the world, with speeds of up to 40 metres per day. Since measurements of Jakobshavn Isbrae were first taken in 1850, the glacier has gradually receded, finally coming to rest at a certain point for the past 5 decades. They expected to find a decline in ice thickness when they embarked on a study of radar observations of 402 lakes near Barrow in Alaska from the European earth resources satellites ERS-1 and ERS-2. Sometimes glaciers surge -- they move up to 10 times faster than their usual speed. The red flow lines are from 1992 data; the blue flow lines are 2000 data. Some features of www.egu.eu will not appear or function properly if your The speed of Greenland's fastest glacier, Jakobshavn Isbræ, has varied substantially since its speed-up in the late 1990s. Meanwhile, the Jakobshavn Glacier in the south-west is moving faster than ever. They note that summer speeds are temporary, with the glacier flowing more slowly over the winter months. Tim Radford is a freelance journalist. 15,16 The speed at which Jakobshavn Isbræ glacier is retreating doubled from 1996 to 2005. Having a map of Jakobshavn’s bed has been a long-time goal of glaciologists. Notice that the flow speed of the glacier has increased significantly from 1992 to 2000. In 2012 and 2013, the front retreated more than a kilometre further inland than in previous summers, the scientists write in the new The Cryosphere study. The Arctic ice sheet is thinning, and most of the planet’s glaciers are retreating as climates warm, so the Jakobshavn glacier is carrying less ice, at a faster rate, over shorter distances than ever before, and by the end of the century could have shifted 50 kilometres upstream. Many glaciers in Greenland and in the Antarctic Peninsula are accelerating, which is generally attributed to warmer conditions and more meltwater lubricating the bed of the glacier. The ice stream's speed-up and near-doubling of ice flow from land into the ocean has increased the rate of sea level riseby abou… The new observations show that in summer of 2012 the glacier reached a record speed of more than 10.5 miles (17 kilometers) per year, or more than 150 feet (46 meters) per day. In summer, the Jakobshavn Glacier - widely thought to have spawned the iceberg that sank the Titanic - is moving about four times faster than it was in the 1990s. But they add that even the annually averaged speedup over the past couple of years is nearly 3 times what it was in the 1990s. If you wish to receive our press releases via email, please use the Press Release Subscription Form at http://www.egu.eu/news/subscribe/. On average, the glacier moved nearly three times faster in 2012 than it did in the mid-1990s. Speed Boats Tours in Ilulissat; Kayaking & Canoeing in Ilulissat; 4WD, ATV & Off-Road Tours in Ilulissat; Adrenaline & Extreme Tours in Ilulissat; ... Jakobshavn Glacier Reviews: 5/5. With accelerations like this, phrases like “glacial pace” may no longer serve as clichés of lethargic movement. Munich, Germany This means that, even though the glacier is flowing towards the coast and carrying more ice into the ocean, its calving front is actually retreating. An iceberg calved from the rapidly accelerating Jakobshavn Isbræ floats in Greenland’s Disko Bay (Image: Courtesy of Ian Joughin, PSC/APL/UW). “We know that from 2000 to 2010 this glacier alone increased sea level by about 1mm”, said Ian Joughin, of the Polar Science Centre at the University of Washington, who led the research. Abstract. A fast-moving Arctic glacier which has earned a place in history is now accelerating even more quickly. On average, the glacier moved nearly three times faster in 2012 than it did in the mid-1990s. “With the additional speed it will likely contribute a bit more than this over the next decade.”. Byrd Glacier is also moving faster than average, but unlike many other glaciers, has been sounded in the past. And that in turn represented a doubling of flow speeds since 1997. Ian Joughin This article originally appeared on Climate News Network. Seattle, Washington, USA All Rights Reserved. Just as with any rite of passage, whether graduation, marriage, birth of a child, a pivotal election, or the loss (or finding) of a…, Well, the US presidential election is now behind us and it's time to take stock. The speed at which Jakobshavn Isbrae glacier is retreating doubled from 1996 to 2005 (Rignot and Kanagaratnam, 2006;Kerr, 2006). In the summer of 2012 the glacier reached a record speed of more than 17 kilometres per year, or over 46 metres per day. Try this simple experiment for yourself. Please mention the name of the publication (The Cryosphere) if reporting on this story and, if reporting online, include a link to the paper (http://www.the-cryosphere.net/8/209/2014/tc-8-209-2014.html) or to the journal website (http://www.the-cryosphere.net). Jakobshavn Isbræ is Greenland's largest outlet glacier, draining about 6.5 per cent of the ice-sheet area, and it has been surveyed repeatedly since 1991 (ref. The ice stream's speed-up and near-doubling of ice flow from land into the ocean has increased the rate of sea level rise by about .06 millimeters (about .002 inches) per year, or roughly 4 percent of the 20th century rate of sea level increase. Jakobshavn Glacier. Seattle, Washington, USA "> +1-206-221-3177 Greenland's Jakobshavn glacier dumps more water into the ocean in a day than New York City uses in one month, and that rate is double what it was merely a decade ago. He won the Association of British Science Writers award for science writer of the year four times. The 2014 EGU General Assembly is taking place is Vienna, Austria from 27 April to 2 May 2014. "We know that from 2000 to 2010 this glacier alone increased sea level by about [.04] of an inch. That's 11 miles (17 kilometers) per year. Copyright ©1985 - 2019 InnerSelf Publications. You'll need a small wooden block and an ice cube. These flow rates are unprecedented: they appear to be the fastest ever recorded for any glacier or ice stream in Greenland or Antarctica, the researchers say. The Jakobshavn Glacier, the largest glacier in Greenland is moving ice from land into the ocean at a speed that appears to be the fastest ever recorded. Key Facts. These speeds are recorded in the summer, when all glaciers are more likely to be a bit friskier. That was because they already had temperature and precipitation records from Barrow dating back five decades. By 2003, this glacier—already among the world's fastest-moving—reached speeds of more than 7.8 miles (12.6 kilometers) per year. browser does not have JavaScript enabled, or does not These images, produced using GLISTIN-A radar data as part of NASA's Oceans Melting Greenland (OMG) mission, show how much mass the glacier gained from 2016-17, 2017-18 and 2018-19. A fast-moving Arctic glacier which has earned a place in history is now accelerating even more quickly. Science that Changed the World: The untold story of the other 1960s revolutionby Tim Radford. INNERSELF - Watch the spectacular calving of the glacier as caught on film in the Academy Award nominated documentary Chasing Ice. Thus, the Jakobshavn Glacier, which was already considered to be one of Greenland's fastest – if not the fastest – is now said to have reached record-breaking moving speeds. "We are now seeing summer speeds more … PhD Student Jakobshavn Isbræ (Jakobshavn Glacier) is moving ice from the Greenland ice sheet into the ocean at a speed that appears to be the fastest ever recorded. 6 Jakobshavn Isbræ, an outlet glacier off the west coast of Greenland, is losing mass faster than previously thought, due to increased melt water passing through it, as reported in a new paper.The glacier’s rapid trajectory of thinning may well represent the Greenland Ice Sheet (GrIS) ice loss rate in the near future, which could mean faster sea level rise than currently projected. Located on the west coast of Greenland, Jakobshavn Isbræ is one of the most rapidly shrinking glaciers in the world. New NASA data shows that Jakobshavn Glacier — Greenland's fastest-moving and fastest-thinning glacier for most of the 2000s — grew from 2018 into 2019, marking three consecutive years of growth. The fastest ice flow in Greenland is the glacier Jakobshavn, which moves at the blazingly slow speed of about 16 kilometers in a year—about 180 centimeters per hour. But even when averaged over the whole year, the glacier’s flow has accelerated threefold since the 1990s. Research from the Arctic shows Greenland’s fastest-flowing glacier has doubled its summer flow pace in a decade, and ice cover on Alaskan lakes is declining. While winterflowspeedhasnotincreased substantially overthelast threewinters, thereremains a strong seasonal variation in flow speed that coincides with a cycle of summer thinning and winter thickening. According to research published in the European Geosciences Union journal The Cryosphere, summer flow speeds have doubled yet again since a Nasa measurement in 2003. In the summer of 2012, the glacier reached a record speed of more than 17km per year - more than 46m per day. What this means is the glacier is adding more ice to the ocean, which increases the sea-level. But other satellite radar imagery has begun to reveal an ominous picture of change elsewhere in the Arctic, on the north slope of Alaska. dshean@uw.edu, Dana Floricioiu My wife Marie and I are a mixed couple. These appear to be the fastest flow rates recorded for any glacier or ice stream in … EGU Media and Communications Manager With the additional speed it likely will contribute a bit more than this over the next decade,” explains Joughin. This research is presented in the brief communication ‘Further summer speedup of Jakobshavn Isbræ’ to appear in the EGU open access journal The Cryosphere on 3 February 2014. On average, the glacier moved nearly three times faster in 2012 than it did in the mid-1990s. She's Canadian and I am an American. Subscribe to our monthly newsletter and stay up to date with the latest EGU news. In summer 2012, Greenland's Jakobshavn Isbrae Glacier raced more than 150 feet (46 meters) per day, faster than any glacier on Earth. "> +49 8153 28-1763 NASA research shows that Jakobshavn Glacier, which has been Greenland's fastest-flowing and fastest-thinning glacier for the last 20 years, has made an unexpected about-face. This visualization was created to support a talk at the Fall 2004 AGU meeting. As you learned in the video, the speed of the Jakobshavn glacier dramatically increased from one foot per day to 113 feet per day, largely due to meltwater seeping underneath the glacier. The team used satellite data to measure the speed of the glacier as part of US National Science Foundation (NSF) and NASA studies. Here we present observations of surface velocity, mélange rigidity, and surface elevation to examine its behaviour over the last decade. Researchers from the University of Washington and the German Space Agency (DLR) measured the dramatic speeds of the fast-flowing glacier in 2012 and 2013. Scientists track the calving rate and speed of Jakobshavn in part because the glacier is responsible for draining a large portion of the Greenland Ice Sheet. Warming conditions in the Arctic contribute to glacier acceleration in multiple ways. Jakobshavn Isbrae is Greenland's largest outlet glacier, draining 6.5 percent of Greenland's ice sheet area. Abstract. This week, we reflect on the question: "where do we go from here?" Currently, there’s no good way for ice scientists to measure such slow velocities in one measurement. These new data reveal large seasonal speedups, 30 to 50% greater than previous summers. Subscribed journalists and other members of the media receive EGU press releases under embargo (if applicable) 24 hours in advance of public dissemination. from Jakobshavn Isbrae to investigate the processes driving its dynamic evolution. Jakobshavn’s current speed of flow is about 15,000 meters per year. As the Arctic region warms, Greenland glaciers such as Jakobshavn Isbræ have been thinning and calving icebergs further and further inland. A new study has found that the Jakobshavn Glacier, in the south-west of Greenland, is moving more than 17 kilometres per year, or over 46 metres per day. Jakobshavn Isbræ is Greenland's largest outlet glacier1, draining about 6.5 per cent of the ice-sheet area, and it has been surveyed repeatedly since 1991 (ref. Jakobshavn Isbræ, which is widely believed to be the glacier that produced the large iceberg that sank the Titanic in 1912, drains the Greenland ice sheet into a deep ocean fjord on the coast of the island. The speed of the Jakobshavn Isbræ — the Jakobshavn Glacier — in western Greenland was measured by researchers from the University of Washington and … The fastest ice flow in Greenland is the glacier Jakobshavn, which moves at the blazingly slow speed of about 16 kilometers in a year—about 180 centimeters per hour. Jakobshavn Glacier produces around 10% of all Greenland icebergs; that's around 4 billion tons of ice entering the sea. "> +1-206-221-8727 Freeze dates in the region are now occurring on average six days later than in the past, and the ice is breaking up on average around 18 days earlier. As the glacier moves we can track changes between images to produce maps of the ice flow velocity,” says Joughin. He has lectured about science and the media in dozens of British and foreign cities. That's 11 … How Urban Forests Add To Cities’ Health And Wealth, These Hottest Years Will Soon Be Our New Normal And Then Some, Clouds Slow Down Warming In The Short Term, Plant Biodiversity Is At Risk As The Climate Changes, Why Climate Change Is Making Autumn Leaves Change…, Take Caution: Winter Drownings May Increase As Ice…, Greenland Is Melting: We Need To Worry About What’s…, The North's Climate Change Trifecta: Heat Waves,…, Shrinking Glaciers Have Created An Imbalance For…, Why Are News Outlets Still Giving A Platform To…, The Arctic Hasn't Been This Warm For 3 Million Years…. Jakobshavn Isbrae is Greenland's largest outlet glacier, draining 6.5 percent of Greenland's ice sheet area. Here we present observations of surface velocity, mélange rigidity, and surface elevation to examine its behaviour over the last decade. The scientists used satellite data to measure the rate of summer change in Greenland. The Jakobshavn Glacier is located in the southern half of Greenland, which is warmer than the northern part and closer to the Gulf Stream. The speed at which Jakobshavn Isbrae glacier is retreating doubled from 1996 to 2005 (Rignot and Kanagaratnam, 2006;Kerr, 2006). The speed of Jakobshavn Glacier varied between 5,700 and 12,600 metres (18,700 and 41,300 ft) per year between 1992 and 2003. What's Next For American Evangelicals After Trump Leaves Office? Jakobshavn Isbrae is Greenland's largest outlet glacier, draining 6.5 percent of Greenland's ice sheet area. The speed of the Jakobshavn Isbræ — the Jakobshavn Glacier — in western Greenland was measured by researchers from the University of Washington and … As more ice moves from glaciers on land into the ocean, it raises sea levels. We have extended the record of flow speed on Jakobshavn Isbræ through the summer of 2013. The Jakobshavn Glacier moves slower in the winter, but its average flow speed is three times what it was back in the 1990s, according to the news release. Jakobshavn Isbræ (Jakobshavn Glacier) is moving ice from the Greenland ice sheet into the ocean at a speed that appears to be the fastest ever recorded. The Jakobshavn Isbrae (the Danish word for glacier) is a massive river of ice from the Greenland ice sheet to an Atlantic ocean fjord and is thought – there is no way of proving this – to be the source of the giant iceberg that sank the Titanic in 1912. At its calving front, where the glacier effectively ends as it breaks off into icebergs, some of the ice melts while the rest is pushed out, floating into the ocean. “At the end of the analysis, when looking at trend analysis results, we were stunned to observe such a dramatic ice decline during a period of only 20 years”, Surdu said. This week, we focus on seeing things differently... of looking from a different perspective, with an open mind and an open heart. In the summer of 2012 the glacier reached a record speed of more than 17 kilometres per year, or over 46 metres per day. By the end of this century, its calving front could retreat as far back as the head of the fjord through which the glacier flows, about 50 km upstream from where it is today. Jakobshavn is now flowing more slowly, thickening, and advancing toward the ocean instead of retreating farther inland. The finding is important for many reasons. Glacier elevation (b) and velocity (c) are presented as a function of distance inland from a reference position (marked by a star and labelled 'Zero'). The Jakobshavn Isbrae (the Danish word for glacier) is a massive river of ice from the Greenland ice sheet to an Atlantic ocean fjord and is thought – there is no way of proving this – to be the source of the giant iceberg that sank the Titanic in 1912. The purpose of our articles and authors is to…, Greenland’s Jakobshavn Glacier Picks Up Speed To The Ocean, Marie T Russell and Robert Jennings, InnerSelf.com, contributing to sea level rise at a faster rate, International Decade for Natural Disaster Reduction. As you learned in the video, the speed of the Jakobshavn glacier dramatically increased from one foot per day to 113 feet per day, largely due to meltwater seeping underneath the glacier. Click here for more info and/or to order this book on Amazon. “We know that from 2000 to 2010 this glacier alone increased sea level by about 1 mm. In recent years, its flow into the sea has only increased. In summer 2012, Greenland's Jakobshavn Isbrae Glacier raced more than 150 feet (46 meters) per day, faster than any glacier on Earth. For information regarding the press centre at the meeting and media registration, please check http://media.egu.eu. Jakobshavn Isbrae in Greenland is generally considered to be the fastest glacier in the world, with speeds of up to 40 metres per day. The calving front of the glacier is now located in a deeper area of the fjord, where the underlying rock bed is about 1300 metres below sea level, which the scientists say explains the record speeds it has achieved. The Jakobshavn Glacier, which is believed to have been the source of the iceberg that sank the Titanic in 1912, was recorded moving at roughly 10 miles per year – the fastest speed ever recorded. Will The Tropics Eventually Become Uninhabitable? Weßling, Germany Researchers from the University of Washington and the German Space Agency (DLR) measured the dramatic speeds of the fast-flowing glacier in 2012 and 2013. The speed of Greenland's fastest glacier, Jakobshavn Isbræ, has varied substantially since its speed-up in the late 1990s. That works out at 46 metres a day. In the last decade, it has more than doubled its speed, zipping down the slope at 12,600 meters per year, or just short of eight miles per year [source: NASA]. These flow rates are unprecedented: they appear to be the fastest ever recorded for any glacier or ice stream in Greenland or Antarctica, the researchers say. The Jakobshavn glacier is Greenland’s fastest-flowing glacier. "> +49-89-2180-6703 Individual glacier behavior—such as glacier speed, thickening, and retreat—responds to climate change AND to local conditions and short-term (year-to-year) variations. Click here for more info and/or to order this book on Amazon. “We used computers to compare pairs of images acquired by the German Space Agency’s (DLR) TerraSAR-X satellites. Greenland Is Melting: We Need To Worry About What’s Happening On The Largest Island In The World, 3 Reasons For Information Exhaustion and What To Do About It, Watch Your Ums and Uhs -- Spoken Communication Is About More Than Words, COVID-19 Is Triggering More End-of-Life Planning – and Young People Want In On The Discussions, The Silver Lining: Reflecting on 2020's Challenges and Opportunities, 3 Ways Physical Activity Changes The Brain's Very Structure, America: Hitching Our Wagon to the World and to the Stars. The European Geosciences Union (www.egu.eu) is Europe’s premier geosciences union, dedicated to the pursuit of excellence in the Earth, planetary, and space sciences for the benefit of humanity, worldwide. Scientists track the calving rate and speed of Jakobshavn in part because the glacier is responsible for draining a large portion of the Greenland Ice Sheet. Full citation: Joughin, I., Smith, B. E., Shean, D. E., and Floricioiu, D.: Brief Communication: Further summer speedup of Jakobshavn Isbræ, The Cryosphere, 8, 209-214, doi:10.5194/tc-8-209-2014, 2014. Principal Physicist and Affiliate Associate Professor, Earth and Space Sciences The researchers produced the data presented in the study under the NASA-sponsored Greenland Ice Mapping Project, and carried out the analysis of the data at the Center for Remote Sensing of Ice Sheets, sponsored by the US National Science Foundation. (Death Is No Big Deal), Standing on the Brink of Hope: November 30th, 2020 Lunar Eclipse, Horoscope Current Week: November 30 - December 6, 2020, Chiron and the Psychoastrology® of the United States of America, Living A Whole Life Is A Choice You Make and A Stand You Take, Working in Harmony with Life-Force Energy, Do Not Confuse Liking and Loving: Love Overcomes Hate, Why Are We Here? The Chain Around His Heart and The Time for Healing. The meeting’s sessions cover a wide range of topics, including volcanology, planetary exploration, the Earth’s internal structure and atmosphere, climate, energy, and resources. dana.floricioiu@dlr.de, Bárbara Ferreira Since measurements of Jakobshavn Isbrae were first taken in 1850, the glacier has gradually receded, finally coming to rest at a certain point for the past 5 decades. NASA research shows that Jakobshavn Glacier, which has been Greenland’s fastest-flowing and fastest-thinning glacier for the last 20 years, has made an unexpected about-face. We relate changes in glacier speed to geometry through variations Jakobshavn Isbræ is Greenland's largest outlet glacier1, draining about 6.5 per cent of the ice-sheet area, and it has been surveyed repeatedly since 1991 (ref. The new observations of slowing for Jakobshavn Glacier in NO WAY call into question rapid climate change. Slide a wooden block across a table or desk. The results are published today in The Cryosphere, an open access journal of the European Geosciences Union (EGU). ian@apl.washington.edu, Ben Smith German Aerospace Center (DLR) He worked for The Guardian for 32 years, becoming (among other things) letters editor, arts editor, literary editor and science editor. In the summer of 2012, Jakobshavn accelerated to speeds not seen before, surging at a rate of 17 kilometers (10 miles) per year. Jakobshavn Isbræ, a tidewater glacier that produces some of Greenland’s largest icebergs andhighestspeeds,reachedrecord-highflowratesin2012(Joughinandothers,2014).Weuseterrestrial ... term variations in speed on long-term glacier dynamics. Even during the winter months, ice on the lakes of Alaska has begun to decline. Jakobshavn is now flowing more slowly, thickening, and advancing toward the ocean instead of retreating farther inland. Polar Science Center, Applied Physics Lab, University of Washington Department of Earth and Space Sciences, University of Washington It is important to understand recent changes in the velocity of Greenland glaciers because the mass balance of the Greenland Ice Sheet is partly determined by the flow rates of these outlets. Scientists estimate the glacier added about 1 millimeter to global sea levels from 2000 to 2010; its faster flow into the ocean means Jakobshavn will add even more water over the current decade. The ice stream's speed-up and near-doubling of ice flow from land into the ocean has increased the rate of sea level rise by about .06 millimeters (about .002 inches) per year, or roughly 4 percent of the 20th century rate of sea level increase. Geosciences Instrumentation and Data Systems, Geochemistry, Mineralogy, Petrology & Volcanology, Stratigraphy, Sedimentology and Palaeontology, Greenland’s fastest glacier reaches record speeds, http://www.the-cryosphere.net/8/209/2014/tc-8-209-2014.html, Brief Communication: Further summer speedup of Jakobshavn Isbræ, Read this press release in simplified language, Iceberg in front of Jakobshavn Isbræ calving front, Tabular iceberg in front of the Jakobshavn Isbræ terminus. 2). What Does It Feels Like To Die? However, from 1997 to 2006, the glacier has begun to recede again, this time almost doubling in speed. media@egu.eu. For the past 15 years we have spent our winters in Florida and our summers in Nova Scotia. In the case of Jakobshavn Isbræ, the thinning and retreat coincides with an increase in speed. Why the speed-up? “Jakobshavn Glacier is of interest because it is the fastest-moving glacier in the world and drains about 7.5 percent of the Greenland Ice Sheet. Jakobshavn is one of the fastest moving glaciers, flowing at its terminus at speeds that used to be around 20 metres (66 ft) per day but are over 45 metres (150 ft) per day when averaged annually, with summer speeds even higher (as measured 2012-2013). support it. 2 In just one day—between July 6 and 7, 2010—satellite images showed that Jakobshavn Isbrae lost approximately 2.7 square miles (7 square kilometers) of ice area. Both of these processes contribute about the same amount to sea-level rise from Greenland. bsmith@apl.washington.edu, David Shean Cristina Surdu of the University of Waterloo in Canada and colleagues report in The Cryosphere that there has been a 22% fall in grounded ice – frozen from surface to lakebed – between 1991 and 2011. Polar Science Center, Applied Physics Lab, University of Washington We must find common ground between young and old, Democrat and Republican, Liberal and Conservative to truly make…, The "slogan" or sub-title for the InnerSelf website is "New Attitudes---New Possibilities", and that is exactly the theme of this week's newsletter. Try this simple experiment for yourself. 2). Read more at Wikipedia Jakobshavn Glacier, InnerSelf.com | Mighty Natural.com | Climate Impact News.com | Wholistic Politics.com. Greenland’s Jakobshavn Glacier Picks Up Speed … Header image: Iceberg from Jakobshavn Isbræ, Disko Bay. We use terrestrial radar interferometric observations from August 2012 to characterize the events that led to record-high flow. Warmer conditions can send meltwater to the glacier’s base, increasing lubrication and consequently glacier speed. Here's why that is good and bad. In the summer of 2012, Jakobshavn accelerated to speeds not seen before, surging at a rate of 17 kilometers (10 miles) per year. “We are now seeing summer speeds more than 4 times what they were in the 1990s on a glacier which at that time was believed to be one of the fastest, if not the fastest, glacier in Greenland,” says Ian Joughin, a researcher at the Polar Science Center, University of Washington and lead-author of the study. Jakobshavn Isbræ, a tidewater glacier that produces some of Greenland's largest icebergs and highest speeds, reached record-high flow rates in 2012 (Joughin and others, 2014). Principal Engineer and Affiliate Professor, Earth and Space Sciences This visualization shows flow directions and relative speeds of the Jakobshavn glacier in Greenland. Seattle, Washington, USA Greenland ; Qaasuitsup Municipality ; Ilulissat ; Things to do in Ilulissat ; Jakobshavn Glacier; Search. “As the glacier’s calving front retreats into deeper regions, it loses ice – the ice in front that is holding back the flow – causing it to speed up,” Joughin clarifies. What Is The Main Thing Keeping People Divided and Stuck? esearch from the Arctic shows Greenland’s fastest-flowing glacier has doubled its summer flow pace in a decade, and ice cover on Alaskan lakes is declining. EGU, the European Geosciences Union, is Europe’s premier geosciences union, dedicated to the pursuit of excellence in the Earth, planetary, and space sciences for the benefit of humanity, worldwide. Its annual General Assembly is the largest and most prominent European geosciences event, attracting over 11,000 scientists from all over the world. 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