Tuesday , January 19 2021

After the Greenland ice, a larger crater is discovered in Paris



It is the first such crater ever found in Greenland and in common with all continental polar ice caps of Earth. According to the size of this crater is 25 of all known on our planet, writes in the journal Science Advances.

The 31-kilometer crater is under the Hiawatha ice. The meteorite had to make a significant impact on the region, perhaps even the world, scientists said.

But his story is just beginning to count.

"The atmosphere had to be expelled from particles that had to affect the climate. There may have been a lot of ice breaking and a lot of fresh water hit the Ners Strait between Canada and Greenland, which has affected ocean currents throughout the region," he said. one of the authors of the paper, John Paden, a professor of electrical engineering and computer science at the University of Kansas.

"Evidence suggests that the collision probably occurred after the formation of Greenland's continental ice, but the team of researchers is still exploring the exact moment," he said.

The discovery was made in 2015, but the international team of scientists has since verified the results.

The initial finding was based on data from NASA's Arctic Regional Climate Assessment (PARCA) and the Arctic Ice Tracker's IceBridge.

VIDEO: Massive crater discovered under the Greenland ice



Later, more data was collected using more advanced radar technology.

"It has not yet been possible to give the crater a direct date, but its condition is very suggestive of the fact that it formed after the ice began to cover Greenland, so it is below 3 million years, and perhaps (formed) only 12 thousand a year, near the end of the last ice age, "said Professor Kurt Kjaer of the Danish Museum of Natural History, GeoGenetics Center.

Scientists are planning to try to grab material from the bottom of the glacier to help them find out more about the time of collision and its impact on Earth's life at that time.


Source link