Lost Continents Beneath Antarctica Unveiled in Dead Satellite's Data

Lost Continents Beneath Antarctica Unveiled in Dead Satellite's Data https://www.eresviral.com

Lost Continents Beneath Antarctica Unveiled in Dead Satellite's Data







		The ancient continents were found under the ice of Antarctica, thanks to the ancient data of a European satellite now dead.

		The new data analysis of the mission of the Gravity Field and the Explorer of the ocean circulation in steady state (GOCE) has revealed rocky areas called "cratons" in the lithosphere of the Earth, an area between the crust and the mantle of our planet. GOCE sank into Earth's atmosphere five years ago this month after the ship ran out of orbital maneuver fuel. While the scientists were unable to predict exactly where GOCE would fall, no debris was left in the populated areas.

		Newly discovered GOCE cratons are the leftovers of the ancient continents, and provide information on how the modern continents of the Earth, especially Antarctica, are structured, according to scientists working on the study. in a statement from the European Space Agency (THAT).





						


The GOCE global tectonic map, plotted by measuring changes in gravitational force on Earth.

            						    Credit: University of Kiel / BAS 


		"In eastern Antarctica, we see an exciting mosaic of geological features that reveal fundamental similarities and differences between the crust beneath Antarctica and other continents that it joined 160 million years ago," study co-author Fausto Ferraccioli Geology and geophysics scientist at the British Antarctic Survey (BAS), said in the statement.

		GOCE orbited the Earth between March 2009 and November 2013, looking for slight variations in Earth's gravity. The satellite data not only produced a global gravity map, but also revealed local gravity changes with a resolution as small as 80 kilometers (approximately 50 miles).

		The ancient continents came to light in a new map of "indexes of forms" created by BAS and the Kiel University of Germany. ESA compared these indices with the contours of a map.

		"Satellite gravity data can be combined with seismological data to produce more consistent images of the upper crust and mantle in 3D, which is crucial to understanding how plate tectonics and deep mantle dynamics interact," Jörg Ebbing wrote. , principal author of the study and geophysicist. University of Kiel said in the same statement.

		For the study of Antarctica, the gravity gradients recently analyzed will help scientists better understand how these ancient continents affect the behavior of the ice sheet, as well as how the continents will rise as the ice melts. due to global climate change, said ESA officials. Specifically, Western Antarctica has a thinner crust and a lithosphere compared to the eastern region.

		The new job was Detailed November 5 In the Scientific Reports magazine.



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