Imaginez ceci : un sous-marin haute technologie a été envoyé sous l'épaisse glace antarctique pour explorer le monde mystérieux en dessous. En naviguant à travers les eaux glaciales, il est tombé sur d'étranges objets non identifiés qui ont laissé les scientifiques perplexes. Avant que quiconque ne puisse déterminer ce que ces bizarreries étaient, le sous-marin a soudainement disparu des radars—vanished sans laisser de trace ! Aucun signal, aucune épave, aucun indice sur ce qui s'est passé. Certains pensent qu'il pourrait avoir été écrasé par la glace, tandis que d'autres croient que ces objets mystérieux étaient peut-être plus qu'ils n'en avaient l'air. Animation créée par Sympa.
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Musique par Epidemic Sound https://www.epidemicsound.com
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Nos réseaux sociaux :
Facebook: https://www.facebook.com/sympasympacom/
Instagram: https://www.instagram.com/sympa.officiel/
Stock de fichiers (photos, vidéos et autres):
https://www.depositphotos.com
https://www.shutterstock.com
https://www.eastnews.ru
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Si tu en veux encore plus, fais un tour ici:
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FunTranscript
00:00This elegant and ultra-modern submarine, named RAN, was sent to explore the depths of Antarctica.
00:07However, shortly after its first discoveries, it mysteriously disappeared.
00:11So, what really happened?
00:14It all began when scientists wanted to explore one of the most remote and enigmatic places on our planet,
00:21the Dodson barrier, located in Western Antarctica.
00:25This silent colossus stretches over 50 kilometers wide,
00:29almost the length of New York,
00:31between two frozen promontories, the Martins and De Beers peninsulas.
00:35It contains an entire world of geological mysteries.
00:39If you think Antarctica is just a thick snow and ice desert, you are wrong.
00:44Real unknown landscapes are hidden under this frozen layer.
00:49The lower face of the Dodson barrier presents an accidental and dynamic terrain,
00:54shaped by the slow and relentless forces of nature.
00:57There are imposing ice formations, deep crevasses and strange structures,
01:02stretching over hundreds of meters.
01:04Scientists are extremely curious about this territory.
01:08However, as you can imagine, this environment is not an easy war to explore.
01:13To learn more about it, we would have to scan the region via satellites
01:18or try to pierce the ice to gather, piece by piece, the whole panorama.
01:23Unfortunately, these methods only offer vague and incomplete clues.
01:27The real breakthrough happened when scientists had the idea to send submarines
01:32to explore the Dodson barrier.
01:34Thanks to autonomous submersibles capable of diving under the ice,
01:38they are able to reveal what is really hidden in the depths.
01:42These robotic explorers are equipped with impressive sonar systems.
01:46This is what bats or dolphins do.
01:49They use sound to see the world.
01:52In short, they emit sound waves underwater,
01:55and when these waves hit an obstacle,
01:57such as the ice barrier above or the seabed below,
02:00they reintegrate the system.
02:02Animals feel the time that the sound waves take to return
02:06and the changes they undergo,
02:08which allows them to locate and interpret their environment.
02:12For example, the clicks that dolphins emit tell them where the fish are.
02:17We have reproduced this fascinating evolutionary trick
02:20and adapted it to our underwater exploration.
02:23However, our version is much more efficient,
02:26offering an increased level of precision
02:28that allows us to create detailed 3D maps of the environment.
02:32Submarine RAN was one of these robotic explorers.
02:36It owes its name to the Nordic deity of the sea.
02:39RAN had been meticulously programmed to navigate
02:42through the dangerous landscape of Antarctica.
02:45Despite its in-depth training,
02:47its mission ended unexpectedly and mysteriously.
02:51In 2019, RAN was sent to explore the depths under the Dodson barrier.
02:56It was a real hero,
02:58the first to undertake a mission of this type.
03:01The team described it as an expedition on the other side of the moon.
03:05For 27 consecutive days,
03:08it operated relentlessly,
03:10traveling 1,000 kilometers under the thick layer of ice,
03:13the equivalent of a trip from Paris to Berlin.
03:16RAN has crossed limits far beyond what anyone could have imagined.
03:21At one point, it reached more than 16 kilometers
03:24in the belly of the glacier.
03:26And what it discovered there was amazing.
03:29Scientists expected smooth and uniform ice surfaces.
03:34But RAN revealed an underground marked by vast cracks,
03:38crevices,
03:39formations resembling sand dunes frozen in time,
03:42Finally,
03:43he spotted mysterious patterns in the form of whirlpools and drops of water.
03:48Everything seemed more to belong to art than to geology.
03:51This actually tells the story of the ice platforms and the ocean around them.
03:56Hot water infiltrates under the ice and melts it below.
04:00Sometimes it smooths the ice,
04:02but other times it digs its strange and irregular shapes,
04:06resembling patterns or drawings.
04:08Some of these shapes are gigantic,
04:11more than 400 meters long.
04:13This is equivalent to three football fields and a half.
04:16The reason why they look like whirlpools
04:19is that the earth is spinning.
04:21This makes the water move in a particular way,
04:24bending the shapes and drawing its spirals.
04:27This effect is called the Coriolis effect.
04:30Imagine that you are driving and that you are throwing something,
04:34like a ball.
04:35It would follow a curve,
04:36and not a straight line.
04:38The same phenomenon occurs with water on earth.
04:41Later, scientists discovered similar patterns
04:44in other Antarctic ice platforms,
04:46although those under Dodson are much more spectacular.
04:49However,
04:50Ran also made a terrifying discovery.
04:53It turns out that these hot waters,
04:55in addition to being of great artists,
04:57also represent a serious danger.
04:59The Dodson barrier does not float peacefully on the sea.
05:02It is part of a very delicate system
05:05and acts as a protective barrier,
05:07held by vast glaciers in Western Antarctica.
05:11Although floating on the ocean,
05:13it remains connected to the earth.
05:15When hot water infiltrates and melts the ice,
05:18the platform can no longer hold its anchor to the earth
05:21in such a firm way.
05:23The protective barrier then begins to weaken,
05:26which allows the glaciers located behind
05:28to flow faster towards the ocean.
05:30When these glaciers reach the sea,
05:32they add water to it,
05:34which could lead to an elevation of the sea level
05:37and potentially redraw our coasts.
05:39Ran came across vast pockets
05:41where the ice melted at an alarming rate,
05:44due to powerful underwater currents.
05:47It was like seeing a clock ticking inside the glacier.
05:50The stakes were high,
05:52but fortunately, the submarine was ready.
05:55This time, he managed to return safe and sound.
05:58Then, he continued to operate for five additional years,
06:02helping scientists with an impressive amount of precious data.
06:06These missions were perilous.
06:08Ran could sink into the dark cavities under the glacier,
06:13spending 24 hours without communication.
06:16But he mapped each summit and each valley,
06:19and he accumulated experience
06:21thanks to more than 40 missions under the ice.
06:24Then, at the beginning of 2024,
06:26Ran undertook a mission to the Thwaites Glacier.
06:29These objectives were bold from the start.
06:32This place is also sadly nicknamed
06:34the Glacier of the Apocalypse.
06:36It is called that because it melts slowly
06:38and could cause an ascent of the oceans of the globe
06:41if it collapsed,
06:42leading to large-scale disasters.
06:44This is why Ran was rushed to explore these depths,
06:48a place that had never been mapped
06:50with so much detail before.
06:52The goal was to discover the secrets of the glacier,
06:55to study its rapid melting
06:57and to understand why it was degrading so much.
07:00It was the second time that Ran explored the Thwaites Glacier.
07:03During the previous visit,
07:05he had become the first submersible to map the below.
07:09Ran ventured to depths ranging from 2 to 500 meters,
07:13and he transmitted numerous data
07:15on how the Glacier of the Apocalypse
07:17melted slowly due to hot ocean currents.
07:20But as he ventured into these icy depths,
07:23something happened.
07:25Without warning, Ran disappeared from the radars.
07:28He left no trace.
07:30For a moment, he sent crucial data,
07:33and the next moment he had plunged into the abyss.
07:36No distress signal,
07:38no final transmission,
07:40and he never returned to the planned point.
07:42Intensive research has been launched.
07:45Helicopters were hovering above,
07:48while drones were hovering in the icy sky.
07:51But no sign of the submersible
07:53manifested itself under the ice.
07:56After a while,
07:58Ran's batteries were probably exhausted.
08:00At this stage,
08:02he had certainly been swallowed by the abyss
08:04under 450 meters of ice.
08:06It was a great and sad loss
08:08for the scientific team.
08:10Researchers at the University of Gothenburg
08:12are now trying to replace Ran
08:14and continue their research under the Thwaites Glacier.
08:16To this day,
08:18scientists have no certainty
08:20about what really happened.
08:22Some think he could have been trapped under the ice,
08:24while others believe he was carried away
08:26by an invisible current.
08:28It could also be that
08:30something unexpected happened to him.
08:32Whatever the circumstances of his disappearance,
08:34it left scientists stunned.
08:37And it seems that the ice barrier
08:39will continue to keep its secrets for a while.
08:41At least,
08:43we have accumulated a treasure of knowledge
08:45thanks to Ran's journey.
08:47Scientists continue to explore Antarctica,
08:49looking for the history hidden under the snow.
08:51They have thus discovered
08:53that about 90 million years ago,
08:55a luxurious temperate forest
08:57flourished near the South Pole.
08:59They have revealed an ancient world
09:01much warmer than they imagined.
09:03In the depths of Antarctica,
09:05they have exhumed fossilized roots,
09:07pollen and spores
09:09preserved in the soil.
09:11This shows that a rainforest flourished
09:13despite months of polar night.
09:15And all these discoveries
09:17benefit our understanding of the Earth's climate,
09:19past and future.