Le Plus Grand Iceberg Au Monde S'Est Détaché Et A Dérivé Vers L'Atlantique

Sympa

Saviez-vous que le plus grand iceberg du monde navigue actuellement à travers l'océan ? Il s'appelle A23a et s'est détaché pour la première fois de la barrière de glace Filchner en 1986 ! Pendant des décennies, il est resté immobile (littéralement) dans la mer de Weddell, coincé sur les fonds marins. Puis, il a recommencé à se déplacer en 2020, pour être ensuite piégé dans un vortex océanique appelé la Colonne de Taylor. Mais en décembre 2024, il s'est enfin libéré et se dirige maintenant vers l'île de la Géorgie du Sud. Oh, et tenez-vous bien — il fait plus de 4 300 kilomètres carrés, ce qui le rend plus de trois fois plus grand que la ville de New York !

Transcript

00:00You are on the front of the ship when a black and gray mass appears to the horizon.

00:06In a manner of a nightmare or a horror movie, a strange brume approche slowly from the building.

00:12It seems without fin, impossible to distinguish where it starts and ends.

00:16In a rien of time, the ship is minuscule, perdu in a mer of glass.

00:20It is then that you understand, it is not the brouillard, but an iceberg,

00:24and your ship is on the point of knowing the same sort that the Titanic.

00:28This kind of scene is quite plausible,

00:31because the biggest iceberg in the world, called A-23A,

00:35is removed after being left prison for several months

00:38of a gigantic sea turbine.

00:40It is the second time, in a few years only,

00:43that this glass of glass comes to liberate.

00:46The first comes to 2023.

00:48After being left out on the ground for not less than 37 years,

00:52the iceberg was made to err on the grays of the currents.

00:55It covers an equivalent to three times that of New York.

00:58Its weight is also about 1000 milliards of tons.

01:01This glass glass is detached for the first time

01:04from the glacier plate of Filchner, in Antarctica, in 1986.

01:09But instead of deriving, it was immobilized on the high fonds,

01:12at a weak distance from its point of rupture.

01:15It has thus fonded much more slowly than the majority of icebergs.

01:19It is in December 2023 that A-23A is finally released for the good,

01:23entamant a lento derive near the Antarctic.

01:25However, its course has quickly been interrupted.

01:28It is found to be close, not far away from the East,

01:31from the East,

01:32in what we call a column of Taylor.

01:35A gigantic turbine,

01:37which is formed when the currents currents

01:40circulate around a marine marine mountain.

01:42At a moment,

01:43the iceberg turns on himself

01:45at about 15 degrees per day

01:46in the inverse of the aiguilles of a moon.

01:48But since the 13th of December 2024,

01:51A-23A is coming out of this column of Taylor

01:54and takes place again.

01:56The scientists observe attentivement

01:58their journey.

01:59Curious to know

02:00if it is the same trajectory

02:02that other icebergs

02:03or if it follows a new route inédit.

02:05The icebergs also gigantic

02:07that the A-23A

02:09liberate nutrients

02:10in the environment

02:11when they are sinking.

02:12This phenomenon

02:13can in fact create

02:14the living areas

02:15in the oceanic

02:16habitually desert.

02:17However,

02:18there is still a lot

02:19to understand

02:20the way

02:21the characteristics

02:22such as the size,

02:23the shape

02:24or the origin

02:25of an iceberg

02:26influence this process.

02:27To learn more,

02:28the researchers

02:29have begun to collect

02:30some water particles

02:31from the zones

02:32that A-23A

02:33are susceptible

02:34to traverse.

02:35And they will continue

02:36to raise it all along

02:37their derives

02:38in hoping

02:39that this will allow us

02:40to better understand

02:41the impact

02:42of massive icebergs

02:43on the marine ecosystems

02:44around.

02:45In fact,

02:46the glacier

02:47to which our colonel

02:48belonged

02:49is an ancient

02:50remarkable

02:51literally millenniaire.

02:52In Antarctic,

02:53the most ancient

02:54glace

02:55could date

02:56of about 1 million years.

02:57In Groenland,

02:58she reached

02:59more than 100.000 years.

03:00In Alaska,

03:01the most ancient

03:02glace

03:03never recovered

03:04discovered

03:05in a basin

03:06between the

03:07Mount Bona

03:08and Churchill

03:09has about 30.000 years.

03:10A bambin

03:11next to the others.

03:12In a glacier

03:14typical of Alaska

03:15in Alaska,

03:16it takes about

03:17100 years

03:18to make the glacier

03:19recently formed

03:20across the entire

03:21of the glacier.

03:22The glacier

03:23Bering,

03:24the most vast

03:25of this state,

03:26with its 225 km

03:27long,

03:28its glacier

03:29has been able

03:30to traverse

03:31in less than 400 years.

03:32This shows

03:33the movement

03:34constant

03:35of a glacier

03:36of the Atlantic

03:37which relie

03:38the Arctic

03:39to Terre-Neuve.

03:40If you dream

03:41to see a multitude

03:42of icebergs,

03:43it is there

03:44that you have to make.

03:45Every year,

03:46many blocks of glass

03:47across this region,

03:48the majority from Groenland.

03:49In winter

03:50and summer,

03:51large fragments

03:52of glacier

03:53get out

03:54by the north-sud

03:55currents

03:56across the Baie

03:57of Baffin

03:58to reach the

03:59Mer of Labrador

04:00where they end up

04:01from.

04:02Some also

04:03come from

04:04Canadian

04:05to reach the Mer

04:06of Labrador

04:07and along the coast

04:08east and west

04:09of Terre-Neuve.

04:10These huge blocks

04:11of glass

04:12are also very ancient,

04:13dating from around

04:1410.000 years.

04:15Each year,

04:16between 400

04:17and 800 icebergs

04:18from average

04:19across the Allée

04:20of the Icebergs.

04:21The speed of their

04:22derives depends

04:23of their volume,

04:24their shape,

04:25their currents,

04:26their waves

04:27and the wind.

04:28But the average speed

04:29is less than 600 m

04:30per hour.

04:31There are six types

04:32of icebergs

04:33rocks

04:35from大的

04:36flat

04:37glass

04:38somewhere

04:39o'clock

04:40o'clock

04:41here

04:42as well as

04:43five

04:44clouds

04:45are

04:46the

04:47top

04:48to

04:49a

04:50or

04:51a

04:52right

04:54the

04:55icebergs

04:56are

04:57the

04:59All these are impressive. Let us know in the comments which is your favorite.

05:03As soon as these icebergs arrive towards the south, the most hot water increases their fonte,

05:09which makes them imprevisibles, sometimes even dangerous.

05:12Today, the satellites follow the icebergs of size large and medium to avoid accidents.

05:17But the most reduced is a danger for the small embarcations.

05:21In 2018, a iceberg has made the big title

05:24when it is approached in a habit of the village of Ferryland at Terre-Neuve.

05:28The photos montrant this gigantic iceberg dominant the houses of the village have turned the web.

05:34It is found in 100 meters of water, a very deep zone for its size.

05:40And now, I'm going to take you to a amazing journey to assist to something amazing and a great tragedy.

05:48His existence even has led to one of the biggest catastrophes of history.

05:52Look, a huge block of glass is detached from the south-west of Groenland.

05:57He is composed of tombs, a more than 1000 miles,

06:01at the time when the mammoths were still on Earth.

06:04The enormous iceberg begins its long period.

06:07He weighs more than 520 meters long and weighs 75 millions of tons.

06:12Despite its size, he remains relatively peaceful

06:15and takes away from the ships as well as the main waves

06:18as well as the maritime coast of its glacier natal.

06:21However, he begins to deriver towards the south,

06:23even further than most of the icebergs.

06:25In general,

06:27the blocks like this will be found before coming to the seas too cold.

06:32Among the 15000 to 3000 icebergs

06:34which are detached from the glacier and the Groenland every year,

06:37only 1% of them come to the Atlantic.

06:40The exceptional trajectory of this iceberg,

06:43which reaches more than 8000 kilometers

06:45on the south of the Arctic Arctic in April,

06:47the rends truly unique.

06:49Even after several months of fonte,

06:51this block of glass is an impressive size.

06:54It weighs about 1,5 million tons,

06:56so close to two times the weight of the golden gate.

06:59On the top of the sea,

07:01its part visible is up to more than 30 meters.

07:03But,

07:04like most icebergs,

07:06the majority of its mass,

07:07about 90%,

07:09are under the surface.

07:11The story of this iceberg

07:12takes a tragic turn on the 14th of 1912,

07:15when,

07:16when,

07:17what,

07:18it is,

07:19the Titanic croise the Titanic.

07:20The ship is at about 600 kilometers

07:23in the Atlantic Atlantic Atlantic,

07:25when the iceberg seems to come from nowhere.

07:27Why do they not see it before the collision?

07:31Why do they not see it before?

07:33Excellent question.

07:35Most people imagine the icebergs

07:37as a large glass glass of glass,

07:39often covered with snow.

07:41However,

07:43in reality,

07:44the icebergs exist in a multitude of colors.

07:46Some have some rayures,

07:48some patterns,

07:49or even the tourbillons,

07:50similar to the bonbons.

07:52And it is even possible

07:53that they are black.

07:54A iceberg can become black

07:56and white.

07:57When the glass is extremely pure,

07:59without bubbles

08:00nor fissures,

08:01they absorb all the light

08:02instead of the renvoyer,

08:03which gives them

08:04an appearance sombre.

08:05Another possibility

08:07is that a volcanic eruption

08:08will recouvre

08:09a glacier of sand.

08:10If a piece of this glacier

08:11will be detached,

08:12it will be a black.

08:14The researchers

08:15are still not certain

08:16of the reason

08:17why the Titanic

08:18is still sombre.

08:19Or even if it was really the case.

08:21It is really the case.

08:22Cependant,

08:23the vigil has affirmed

08:24that it was black.

08:25Another matelot

08:26the describes

08:27as gris

08:28or gris foncé.

08:29The hypothesis

08:30suggests that this block

08:31could be a iceberg

08:32noir,

08:33formed when the

08:34part of the top

08:35falls,

08:36which is causing

08:37the iceberg.

08:38If the part of the top

08:39is enough lisse

08:40to absorb the light,

08:41it appears

08:42also sombre.

08:43However,

08:44even if the iceberg

08:45was not really black,

08:46the night

08:47has certainly

08:48complicated.

08:49The icebergs

08:50don't reflect

08:51the light,

08:52especially when they

08:53are irregular

08:54or vertical.

08:55They then fall

08:56into the sombre

08:57and scintillant.

08:58Without a radar,

08:59it is extremely

09:00difficult to see

09:01a iceberg

09:02the night,

09:03which explains

09:04probably why

09:05the Titanic

09:06did not see it

09:07as well.

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