The Thwaites Glacier of the western Antarctic covers 70,270 square miles (182,000 km2), the approximate size of Florida. Ice mass has been called the "most dangerous glacier in the world" because it has enough ice to lift the oceans of the world more than two feet (65 cm). In addition, the Thwaites glacier again places other sheets of ice with the potential to increase sea levels a year over 2.5 meters if all the ice is lost.
And in calamitous news for the lowland counties, NASA researchers have revealed the presence of a broken bass cavity at the bottom of the Thwaites Glacier.
The camera is two thirds of the size of Manhattan and 1,000 feet tall (300 meters) tall and grows rapidly.
NASA has made a series of shocking discoveries about the glacier state.
The researchers hoped to find some holes between the bottom of the ice and the rocks at the bottom of Thwaites, but the size and "explosion growth rate" of the cavern surprised them.
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NASA considers that the cavity is large enough to contain 14,000 tons of tons of ice, most of which only melt in the last three years.
Eric Rignot, a NASA Jet Propulsion Laboratory (JPL) researcher and IceBridge operation coordinator, said: "We have been suspicious for years that Thwaites was not well linked to the rock of the background under her
"Thanks to a new generation of satellites, we can finally see the details."
The findings illustrate the need for detailed observations of the lowlands of Antarctic glaciers in calculating the speed of sea levels in response to climate change.
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The cavity was revealed by a radar that penetrates the ice in the NASA study in the connections between the polar regions and the global climate.
The researchers also used data from a constellation of synthetic opening radars in the Italian and German space.
These high resolution data can be processed using a technique called radar interferometry to discover how the surface of the lower floor has moved between the images.
Pietro Milillo of JPL, lead author of the study, said: "The size of a cavity under a glacier plays an important role in the fusion process and the more heat and water penetrate the glacier, it is it was faster ".
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The Thwaites Glacier is currently responsible for 4 percent of the global sea level rise.
The National Science Foundation of the United States and the British National Environmental Research Council are initiating a five year field project to answer the most critical questions about their processes and features.
The Thwaites International Glacier League will begin its field experiments in the summer of the South Hemisphere 2019-20.
Another changing feature is the glacier land line: the place near the edge of the continent where it extends from the bed and begins to float to the sea water.
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Many Antarctic glaciers extend for miles beyond their dirt lines, floating over the open ocean.
In the same way that a boat on the ground can float again when the weight of its cargo is removed, a glacier that loses ice weight can float on the ground where it used to stick.
When this happens, the ground line is removed to the interior, exposing more part of the glacier edge to the water of the sea, increasing the likelihood that its melting speed will accelerate .
"We are discovering the different mechanisms of withdrawal," said Milillo.
These results point out that the interactions between ice and ocean are more complex than previously understood.
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