قالب وردپرس درنا توس
Home https://server7.kproxy.com/servlet/redirect.srv/sruj/smyrwpoii/p2/ Science https://server7.kproxy.com/servlet/redirect.srv/sruj/smyrwpoii/p2/ Scientists have discovered a huge cavity growing under Antarctica

Scientists have discovered a huge cavity growing under Antarctica



Antarctica is not in a good place. In just a few decades, the continent has lost trillions of tons of ice at an alarming rate that we can not handle, even in places we have once considered safe.

Now, in this enormous vanishing act, a stunning new gap is revealed: a giant cavity that grows under Western Antarctica, which, according to scientists, covers two-thirds of Manhattan's footprint and stands nearly 300 meters (984 feet) at the bottom of the Tufts glacier – widely known as "the most dangerous glacier in the world" – is so large that it is a clear piece of approximately 252 billion tons of ice Antarctica loses everyone

  017 thwaites glacer Glacier Travers (NASA / OIB / Jeremy Harbeck)

Researchers say once the cavity is was large enough to accommodate 14 billion tons of ice. Even more alarming, researchers claim that it has lost most of this ice in only the last three years.

"We have been in suspicion for years that Tavites was not firmly connected to the foundation below," says Erik Rig from the University of California, Irvine and JPL in Pasadena, Calif.

"Thanks to a new generation of satellites, we can finally see details."

Rignot and other researchers discovered the cavity with ice-projection radar as part of NASA's IceBridge operation, with additional data provided by German and French scientists

According to testimony, the hidden emptiness is just one ice sacrifice among a "sophisticated model of the withdrawal and melting of ice, which occurs on the glacier Tavece, sectors of which retreat by up to 800 meters (2625 feet) each

The complex model that new indications reveal – which do not coincide with the current glacial layers or ocean patterns – suggest scientists do learn more about how water and ice interact with each other in the icy but warm Antarctic environment. 19659003] "We find different mechanisms of withdrawal," explains the first author of the new book, JPL scientist Pietro Milillo. The growing cavity is a red mass in the center While the researchers are still learning new things about the complex ways in which ice melts in the glacier Tave in its most basic form , the giant cavity represents a simple (if unfortunate) scientific reality. "[The size of] A glacier cavity plays an important role in melting," says Mililo.

"When more heat and water fall under the glacier, it melts faster."

This is important to know, as at present Thwaites accounts for about 4% of the global sea level rise.

If it disappears completely, the ice held in the glacier can lift the ocean by about 65 centimeters (about 2 feet). But this is not even the worst case scenario

The Travis glacier is actually held in the adjacent glaciers and the ice tables inward. If its lost power disappears, the consequences could be unthinkable, which is why it is considered to be such a central natural structure in the Antarctic landscape.

How long will it stay, no one knows – that's why scientists are now getting on

What they find, it remains to be seen, but that is undoubtedly one of the most important scientific studies that are taking place in the world now. [19459109] The Washington Post Last year: "For the global change of sea level in the next century, this glacier is almost the whole story."

The findings are reported in Scientific Achievements .


Source link