Fresh satellite images reveal LOST CONTINENTS hidden underneath Antarctica

Ancient lost continents hidden deep beneath Antarctica reveal their secrets

The shard-wooing satellite flew at an altitude of just 255 km, nearly 500 km closer to earth than a typical observation satellite in order to maximize its sensitivity to gravity.

"These gravity images are revolutionizing our ability to study the least understood continent on Earth, Antarctica", co-author Fausto Ferraccioli said in a statement on ESA's website.

Geologists have done pretty well piecing together the history of plate tectonics, or how sections of Earth's crust have pinballed across the globe crashing into one another and pulling apart.

Germany's Kiel University and the British Antarctic Survey published their latest GOCE-based findings this week in the journal Scientific Reports. The video reconstructs the tectonic fallout of Antarctica splitting from the bygone landmass of Gondwana, which was one subsection of the supercontinent Pangaea.

Researchers, using data from the European Space Agency's Gravity Field and Ocean Circulation Explore, were able to map the lithosphere - the tectonically active layer of the Earth that includes the crust and mantle.

"There are six different gradients so we've found a compromise, which describes the curvature of the field but which is easier to look at - it's a synthesis of the six components". During its mission, the craft collected precise measurements of Earth's gravity, which reveal the thickness and density of the planet's lithosphere, a combo of the crust and upper mantle.

Читайте также: Child care at this Prince George centre costs only $200/month

"In East Antarctica, we see an exciting mosaic of geological features that reveal fundamental similarities and differences between the crust beneath Antarctica and other continents it was joined to until 160 million years ago", noted Ferraccioli. "Some of these regions have clear ties to formerly adjacent continents in the supercontinent Gondwana-such as Australia, India and Africa". These old features are significant as they hold records of Earth's early history.

"Under that is the asthenosphere, a much more plastic, gooey, sphere underneath - and that part is very hot".

With so many variables to consider, predicting how ice melt might progress across Antarctica is a real challenge, so any help scientists can get will be welcome. Data compiled by a now-defunct satellite has unveiled the processes that took place under the thick ice sheet of Antarctica long ago.

This post-glacial rebound - the rise of land masses after the lifting of the huge weight of ice sheets during the last glacial period - is technically known as glacial isostatic adjustment (GIA).

GOCE's new curvature images help unveil the difference in lithospheric structure between the dense craton composite of East Antarctica and the rift system of West Antarctica.

The project runs until the summer 2020, and a preliminary 3D model of the Earth including Antarctica will be showcased to the broader science community at the 3D Earth Science Meeting 2019 in Dublin next March.

При любом использовании материалов сайта и дочерних проектов, гиперссылка на обязательна.
«» 2007 - 2019 Copyright.
Автоматизированное извлечение информации сайта запрещено.

Код для вставки в блог

Related News:

Most liked

Marcus Peters goes after Sean Payton, "Keep Talking"
Peters said. "Because I like what he was saying on the sidelines too". "Tell him, 'Keep talking that s-". Los Angeles Rams cornerback Marcus Peters rarely is at a loss for words.

Facebook launches video app ‘Lasso’
By comparison, 69 percent of teens say they use Snapchat , 72 percent say they use Instagram and 85 percent say they use YouTube. The app description reads, " Lasso makes it easy for anyone to create and share short videos with fun filters and effects".

Hollow Knight will no longer be getting a physical release
In a rather short blog post today, Team Cherry has announced that it has cancelled the upcoming physical versions of Hollow Knight .

Google`s YouTube may arrive on Nintendo Switch this month
As a reminder Hulu is the only other major media app available in the USA , and Japanese region accounts can access Niconico. Surprisingly, it doesn't really function well for anything beyond that, thanks to a dearth of entertainment and media apps.

Trump arrives in Paris ahead of WWI commemoration ceremony
Macron attempted to smoothe over the divisions, saying he shared Trump´s view on the need for Europe to boost defence spending. When the war ended, the United States armed forces was on the cusp of becoming the major military power in the world.

Sterling hammered by Jo Johnson resignation
The referendum, he said, should have three choices, endorse Ms May's deal, leave without a deal, or remain in the EU. A spokesperson for May's office said later Friday that under no circumstances would a second referendum be held.

Daniel Ricciardo handed grid penalty for Brazilian GP
Ricciardo suffered his eighth DNF of 2018 last time out in Mexico after suffering late-race hydraulic failure. I think we could have been a lot closer to them if I didn't have traffic in the last two sectors.

Novak Djokovic-Rafael Nadal exhibition in Saudi Arabia called off
Nadal and Djokovic were due to meet in a lucrative exhibition tie in the Middle East three days before Christmas. And my team is talking to them, to analyse the things. "I'm aware of what's happening, and it's sad, of course".

Alibaba's Singles Day beats Amazon Prime Day
The explosive start to Singles' Day comes as little surprise, despite some recent shakiness in the Chinese economy. The date was chosen because 11-11 resembles four "bare sticks", a Chinese term for bachelor.

Strategy-Shooter Void Bastards Revealed for Xbox One
X018 reveals continue rolling through, and tha latest should whet the appetites of fans of BioShock as well as System Shock 2 . Players will have to make decisions on "where to go, what to do and who to fight", while face-to-face with enemies.

Florida orders vote recount in Senate, governor races
Snipes was asked by Governor Jeb Bush to serve out the term of Supervisor of Elections in Broward County", her state website said. The reason why he feels that way is obvious: we believe when every legal ballot is counted we'll win this election.

Michelle Obama shuns ‘mean-spirited’ politics in memoir
Michelle Obama also reveals the conspiracy theory, promoted by Trump, made her fear for her life and her children's lives. The couple signed a $60 million book deal with Penguin Random House in March 2017 to write a memoir each.

United Kingdom court rejects bid to stop legal challenge to Brexit
All parties have committed to avoid a "hard border" with costly, time-consuming border checks that would hamper business.

Huddersfield and West Ham battle to lively 1-1 draw
Lukasz Fabianski brilliantly tipped Steve Mounie's thumping header on to the crossbar and Philip Billing's curling cross struck the inside of a post.

Sainsbury's Half-Year Results: What The Analysts Said
Sainsbury's has posted a 20.3% rise in underlying profit before tax to £302 million in the first half of its financial year. Sixty Argos stores were opened in Sainsbury's supermarkets in the half, bringing the total to 251.