It once held 14 billion tons of ice. Credit: ITGC website. Nilas ice; Posts: 1414; Liked: 504; Likes Given: 243 ; Re: Thwaites Glacier Discussion « Reply #280 on: May 18, 2020, 06:34:30 PM » I want to remind you about my posting … Goto first page. Thwaites glacier in Antarctica might be past the point of no return. (NASA) "I think this is a big step towards helping understand that," he added. Antarctica with/without ice. From: Huybrechts et al., 2009. Thwaites Glacier. Watch the video. ; Thwaites Glacier is closely watched for its potential to raise sea levels. Thwaites Glacier is nicknamed the Doomsday Glacier because of the deadly impact its melting could have on our planet. The location of the line is a pointer to the rate of retreat of a glacier. That exposes more of a glacier’s underside to seawater, increasing the likelihood it will melt faster. Thwaites Glacier is an important area of study for scientists as it is particularly susceptible to climate and ocean changes. The glacier terminus is nearly 120 km wide, and the bed of the glacier reaches to >1000 m below sea level. Along with Pine Island Glacier, Thwaites Glacier has been described as part of the "weak underbelly" of the West Antarctic Ice Sheet. A file photo of the Thwaites Glacier in Antarctica, known as the 'Doomsday Glacier'. It covers an area of 192,000 sqkm — in comparison, Tasmania is 68,401 sqkm and Victoria is 227,444 sqkm. When glaciers melt and lose weight, they float off the land where they used to be situated. Over the past 30 years, the amount of ice flowing out of the region has nearly doubled, and computer models show that over the next several decades, the glacier may lose ice even more rapidly. Pine Island and Thwaites Glacier have retrograde beds below sea level which makes them prone to marine ice sheet instability . New seafloor maps reveal the first clear view of a system of channels that may be helping to hasten the demise of West Antarctica’s vulnerable Thwaites Glacier. A large area of the West Antarctic Ice Sheet flows to the ocean via Thwaites Glacier, which extends over 192,000 sq kms (74,000 sq miles), an area the size of Florida or the island of Britain. Close Before/after view. Figure 1: Map showing the location of Thwaites Glacier in West Antarctica, as well as the main geographic focus of the 8 projects involved in the International Thwaites Glacier Collaboration (ITGC). If it collapsed completely it could raise sea levels by 60cm. Because of its size (1.9 lakh square km), it contains enough water to raise the world sea level by more than half a meter. Prof Richard Alley Richard Alley is a geologist who investigates the relationship between the Earth’s cryosphere — where water is present in solid form at the surface — and climate change. Its melt already accounts for about 4% of global sea rise, Georgia Tech reported. Thwaites Glacier is a vast brick of ice flowing into Pine Island Bay in western Antarctica. Its melting accounts for 4 percent of global sea-level rise. The eastern ice shelf looks like a large solid piece of ice. Posted February 06, 2019 14:39:25 The Thwaites Glacier is currently responsible for about 4 per cent of global sea level rise. It makes a retreat of the grounding line. It’s thought that a sea level rise of 60cm would swamp coastal towns and cities around the world. ... That’s more than 2 degrees Celsius (3.6 degrees Fahrenheit) warmer than that location’s freezing point owing the chemistry of saltier water. The grounding line is where the glacier transitions from resting on the bedrock to a floating ice shelf in the Amundsen Sea. “It’s amazing to go to a place like Thwaites to see the changes taking place right before your eyes,” said Dr Hogan. The Thwaites Glacier also slows the melting of other glaciers, which could raise sea levels an additional 8 feet if they melted. Sensor(s): ACCELEROMETERS; GPS > Global Positioning System; GRAVIMETERS; LRGM > Lacoste-Romberg Gravity Meter; Data Collection: Data was collected using the BAS twin otter VP-FBL, equipped for aerogeophysical surveys. It is predicted that it will gradually melt, leading to an irreversible collapse over the next 200 to … Pine Island Glacier and Thwaites Glacier in the Amundsen Sea Embayment are among the fastest changing outlet glaciers in West Antarctica with large consequences for global sea level. Nature 458, 295-296. Read all of the reporting from the eight-week expedition. Thwaites Glacier covers 74,000 square miles—an area the size of Florida—and is particularly susceptible to climate and ocean changes. The red dot shows the approximate location of the Nathaniel B. Palmer research vessel each day. Runaway sea-level rise resulting from retreat of Antarctica's Thwaites glacier depends on humans' substantially cutting GHG emissions. Thwaites Glacier in West Antarctica. The location of the line is a pointer to the rate of retreat of a glacier. Scientists may just have identified Thwaites Glacier's Achilles heel. The craggy face of Thwaites loomed a few hundred feet away, but seemed almost close enough to touch, or at least within shouting distance. Here’s the take-home message from this month’s original video by independent videographer Peter Sinclair for Yale Climate Connections: Let’s hope Thwaites in Antarctica waits. Logged Stephan. Thwaites Glacier Mass Balance . Thwaites Glacier: Location: Antarctica: Detailed Location : Dotson Ice Shelf: Location: Antarctica: Detailed Location : Crosson Ice Sheld: Top. Thwaites Glacier is located on the Western border of the Antarctic continent. 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