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The NASA report reveals a disturbing discovery in Antarctica



After the Larsen C faction, scientists concentrated their work on Thwaites, one of the hardest places to reach the Earth, but which would be better known than ever.


In 2010, NASA launched IceBridge, a campaign to study the links between polar regions and the global climate, measuring climate change effects. Until then, the Tuvai glaciers were one of the hardest places to reach the Earth, but with a recently published report by the US space agency, it would be better known than ever.

The document, released on Wednesday, January 30th in Journal for the Advancement of Science, shows that researchers look with extreme attention to the vast void – about two-thirds of the Manhattan and a height of about 300 meters – that grows to the bottom of Thwaites located in the west of the western part of Antarctica.

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The conclusions of the researchers suggest that deeper observation of the lower part of the Antarctic washers is needed in order to calculate how quickly the level of sea level will increase as a result of climate change.

At first, the team expected to find gaps at the Thwaites bottom, between ice and rock, allowing the circulation of ocean water to melt from below.

However, the size and explosive growth rate of the new hole surprised them, given that it is large enough to contain 14 billion tons of ice. Especially since the majority of that ice has melted in the last three years.

In this sense, a California-based academician, Irvine and NASA's Laboratory for Electric Motors in Pasadena, California, Dr Eric Rigot, said: "For years we have been suspicious that the Thwaites are not well connected to the base rock and Now, thanks to the new generation of satellites, we can finally see the details. "

The researcher added that the discovered cavity was discovered by icebreaker radar in IceBridge operation, in addition to data obtained from the constellation of radar for synthetic aperture of Italian and German spacecraft.

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"This data from very high resolution they can be processed using a technique called radar interferometry to reveal how the surface of the ground below has moved between images, "he said.

It is worth mentioning that glaciers are currently responsible for about 4 percent of world sea level rise and that if a complete fracture and the entire ice falls, this level would increase between 65 and 80 centimeters.

More research

Because of the real risks that exist, it's that National Foundation from the United States and the National Council for Environmental Research in the United Kingdom decided to launch a five-year field project to measure long-term loss of ice.

The problem is that at the moment there is no way to track Antarctic glaciers from the ground level, so they must use data from aerial or satellite instruments to observe characteristics that change like glacier melting.

Other information that scientists follow is related to the connection with the glacier, which is nothing more than a place near the edge of the continent where it rises from its bed and starts sailing into seawater.

Many Antarctic glaciers extend miles from its land lines, floating above the open ocean, and when this happens, the earth retracts inward, exposes more than the bottom of the glacier to seawater, which increases the likelihood that its Speed ​​of Fusion is accelerated.

Source: www.publimetro.cl


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