Under the ice of Antarctica discovered the deepest canyon in the world

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2019-12-19 10:40:07

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Under the ice of Antarctica discovered the deepest canyon in the world

it looks like the largest and deepest canyon on the planet

Antarctic ice sheet — the largest mass of ice on our planet. It covers 98% of the ice of Antarctica, which contains 61% of all freshwater on Earth. As the portal in the course of working on a project at the University of California , researchers found under the Denman glacier, the deepest point on land — ice-filled canyon, which stretches for 3.5 km below sea level. This is eight times lower than the lowest point of the globe — the Dead sea. Work can be found in the journal .

About the existence of a huge canyon became known in 2016. In the course of the study, an international team of geologists studied the satellite images, and then used the GPR method. was published in the journal Geoscience World. How figured out the experts, the length of the canyon is about a thousand kilometers, but at the time of detection, they suspected that in some places the depth does not exceed one kilometer. Nobody could imagine that the biggest canyon in the world will be the lowest point of the globe.

How to find the deepest canyon in the world?

As BBC News, an aerial survey over Eastern Antarctica took place regularly, but every time the radar flew over a canyon, to get accurate information about depth based on radar data, was not possible. As a result, scientists relied on data for 1967, collected 19 different research institutions. The resulting topographic map includes almost 1.5 million linear km of radar soundings. It can tell a lot about all the processes that will occur with the land in the region.

the Melting of glaciers is due to climate change — the main threat to our civilization.

In the end, BedMachine Antarctica presents a mixed picture: ice streams in some areas are relatively well protected by the underlying elements, while others are more at risk from climate change. Earlier this year researchers found that to explain the current rise in sea level may collapse in ice cover in Western Antarctica. Recently we told you about the disturbing results of the International research group on climate change (IPCC) at the UN. According to the data obtained , the melting of Antarctic ice can increase sea levels by as much as three meters. Since 1992 Antarctica for 3 trillion tons of ice, and, apparently, the figure is only accelerating. Figuring out what is under the ice cover of the continent is a matter of paramount importance, so the researchers hope that in the future will be able to get more information about the deepest point on Earth.

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