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NASA research warns that the world's most dangerous glacier is disappearing – 2013/01/31



Responsible for crossing the sea, it is the world's most dangerous glacier. And now a new investigation raises an alert. It is 40 kilometers square and 300 meters high at the bottom of the Glacier Thwaites in South Antarctica, with ice mass is being undone.

The consequences of the new NASA study have to be emphasized to calculate accurate observations at the bottom of the glacier in Antarctica how fast sea levels rise in front of climate change.

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Researchers found themselves among ice and rocks at the bottom of the Thwaites, where the flow of seawater and bottom glacier melted. The size and explosive growth of the new hole, however, I was surprised. It's enough to have 14 million tons of ice, and in the last three years the majority of these ice melts.

Thwaites giant ice (DPA)

Thwaites giant ice (DPA)

"The magnitude of the cavity below a glacier important role In merging – said the chief researcher, Pietro Milillo, NASA Jet Propulsion Laboratory (JPL). There are more hot and water glaciers, it melts faster".

"We suspect that Thwaites did not go far below," added Eric Rignot, University of California and JPL. Rignot is the author of a new study published in scientific research. "Thanks to a new generation of satellites, we can finally see the details," he said.

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The cavern revealed it an ice rally radar At NASA's IceBridge Operation, it analyzes the link between the aeronautical and atmospheric polar regions and the global climate in 2010. The researchers used the synthetic speed opening of the Italian and German spacecraft constellation data. This distinctive resolution is very important for treating it through an interferometric radar, since the bottom surface has been moved between images.

One of the widespread images of NASA's Glacier Thwaites (NASA)

One of the widespread images of NASA's Glacier Thwaites (NASA)

Thwaites da One of the most difficult places to reach the earth, but it is more popular than ever. The United States National Science Foundation and the United Kingdom's National Environmental Research Council are developing a five-year project to respond to critical questions about processes and features. The International Thwaites Glacier Collaboration will perform the next summer in the southern hemisphere.

The size of the Florida state, the Thwaites glacier is currently responsible for about 4% of global sea level rise. It has an ice age of more than 2 centimeters wide and ice rises to about 2.4 centimeters above sea level.

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It is below the main trunk of the western glacial part of the Great Cato, the farthest from the western Antarctic Peninsula. In this region, when the tide goes up and down, the ground connection is recovered and advanced approximately 3 to 5 kilometers. Glaciers were built with a constant speed of 0.6 to 0.8 km from 1992 onwards. Although the landing rate is stable, the fusion rate is a great part of the Glacier.

The numerical shapes of ice sheets use a fixed shape to represent cavity beneath the ice, to change and grow the cavity. This new finding means that this limit is probably a pattern Emphasize how Thwaites is losing ice.

Source: DPA / Europa Press


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