ﻣﻮﻗﻊ ﺻﺪﻱ اﻟﺒﻠﺪ

Supervisor
Elham AbolFateh

Science & Technology

Relics of 'lost continents' hidden under Antarctica are revealed by satellite images

Friday 09/November/2018 - 09:11 PM
Sada El Balad
Edited by Ahmed Moamar
The European Space Agency (ESA) has uncovered relics of lost continents that have hidden under Antarctica for millions of years، as the Daily Mail said.

Satellite images reveal a timeline of the ancient landmasses buried a mile (1.6 km) beneath the icy continent.

Scientists said the snaps shed new light on Antarctica، the 'least understood continent on Earth'.

They used data from the long-dead Gravity field and Ocean Circulation Explorer (GOCE)، which plummeted into Earth after it ran out of fuel in 2013.

While the satellite has been out of action for five years، scientists are still pouring over reams of data it collected on Earth's gravitational pull.
A team of scientists used GOCE readings to map out the movements of Earth's tectonic plates under Antarctica.

Their research allowed them to track hidden tectonic shifts over the last 200 million years، offering fresh insights into how Antarctica formed.

'These gravity images are revolutionising our ability to study the least understood continent on Earth: Antarctica،' said co-author Fausto Ferraccioli، Science Leader of Geology and Geophysics at the British Antarctic Survey.
The new readings shed light on the breakup of Gondwana، a long-gone 'supercontinent' that housed what is now Antarctica.

While the landmass split some 130 million years ago، the map shows that Antarctica and Australia remained linked as recently as 55 million years ago.

The study also revealed that West Antarctica has a thinner crust than East Antarctica، which has a 'family likeness to Australia and India'.
The European Space Agency's (ESA) Ocean Circulation Explorer (GOCE) probe tracked the pull of Earth's gravity.

It orbited our planet for over four years، from March 2009 to November 2013.

During that period it got within 140 miles of Earth's surface - unusually low for a satellite - to maximise the accuracy of its instruments.

Comments

ads

Poll

What do you think about our new design?

What do you think about our new design?
ads