Friday , May 20 2022

Underwater Antarctic scenery is based on satellite imagery



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The European Space Agency (ESA) has discovered the remains of an Antarctic underground for millions of years.

Satellite images show the time line of the ancient continent, buried at a distance of 1.6 kilometers below the ice cap.

Scientists have revealed "Antarctic", "the least incomprehensible land on Earth."

They used the Long Dead Gravity Field and the Ocean Circulation Explorer (GOCE), which landed on the planet after fueling in 2013.

Before the satellite is in operation for more than five years, scientists have been pouring over data collected on Earth's attraction.

A group of scientists used the GOCE readings to show the movement of the tectonic plates under the Antarctic.

Their research has provided new insights into how Antarctic was formed and allowed them to track tectonic changes that have been hidden over the last 200 million years.

"These gravitational images have a chance to explore the world's least understandable continent: Antarctica," said Fausto Fernachcholi, Geology and Geophysics Leader in the British Antarctic Study.

"We see an interesting jigsaw puzzle that identifies radical similarities and differences across the Antarctica and other continents in the eastern Antarctica, which has been added 160 million years ago."

Scientists combine GOCE readings with seismic data to create 3D map of Earth's lithosphere.

The lithosphere is composed of layered and melt-free mantle below the Earth's crust, and rocky zones called mountain peaks, ocean-back, and craton.

The kratons are the remnants of the ancient continents that are now part of the continent that we know them.

The study shows that West Antarctica (green) has a thin crust than Eastern Antarctica (blue), similar to East Australia and India. Image / ESA
The study shows that West Antarctica (green) has a thin crust than Eastern Antarctica (blue), similar to East Australia and India. Image / ESA

Recent readings After the collapse of Gondwana, Antarctic lived in a modern "supercontinental".

Although surface transport has been split about 130 million years ago, the map shows Antarctica and Australia 55 million years ago.

The study showed that West Antarctica has a thin crust than East Antarctica, with a "family similarity to Australia and India".

Scientists hope to use their results to study how Antarctic's geology and continental structure affect ice melting.

Roger Hagmans, a GOCE mission scientist, said: "The direct use of gravity gradients for the first time with GOCE is glad to see the new independent eye on Earth, even under the thick layer of ice.

"It also considers how the continents were linked to the division of platforms into the past."

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