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Et si les rivières ne suivaient pas les règles de la nature ? Des scientifiques ont découvert neuf rivières et lacs à travers les Amériques qui défient complètement les lois de l'hydrologie — s'écoulant dans des directions opposées, vers plusieurs océans, ou même changeant de sens selon la météo. 🌊 Le Casiquiare en Amérique du Sud agit comme un tunnel secret entre l'Orénoque et l'Amazone. La rivière Echimamish au Canada ? Elle s’écoule dans les deux sens — et personne ne sait exactement comment. Ces systèmes aqueux étranges sont comme des codes de triche cachés de la Terre, et ils remettent en question tout ce que nous pensions savoir. Animation créée par Sympa.
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00:00There is a river in North America which should not exist.
00:04Well, at least according to scientists,
00:06most of the normal rivers in the world
00:09join in aval,
00:10join in descent
00:11and end up putting their water in an ocean or in a lake.
00:15But the river Echimamish, Canada,
00:17does not follow the rules
00:19and coul in the two directions.
00:21Its name even means
00:22eau that coul in the two senses,
00:24in the local language,
00:26the Cree.
00:27The Echimamish measure around 59 km de long,
00:30but it was another time a big part
00:32of the road
00:33carried out by the railroad marches between the bay of Hudson
00:36and the lake Winnipeg.
00:37It's an end between the river Hayes and the Nelson river.
00:40These eaux are quite deep and deep,
00:42because they cross the tourbieres.
00:44The things become interesting
00:46when we reach the castor.
00:48The people who went there
00:50say that the Echimamish
00:52goes towards the river Hayes
00:53and the Nelson river
00:54in part of the castor central.
00:56It is difficult to tell exactly
00:58where the eau is divided,
00:59because the river traverse
01:00a valley almost flat
01:01and its current current
01:03is barely perceptible.
01:07The course of our list
01:08is the Kazichiar
01:09in South America.
01:11It's the equivalent
01:12hydrologic
01:13of a glass trou
01:14between two galaxies.
01:16It's the only natural canal
01:17on the earth
01:18which relie two big waves,
01:19the Hothorhenok
01:21which gets into the Atlantic Ocean
01:23is the Atlantic Ocean
01:25and the Rio Negro
01:26the most big affluent
01:27of the river gauche
01:28of the Amazon.
01:29This type rare
01:30of division
01:31has the name
01:32of bifurcation
01:33and it is produced
01:34when a river
01:35divide and envoies
01:36its eaux
01:37to two different places.
01:38The Hothorhenok
01:39makes in fact
01:40a part of its eau
01:41profit of Kazichiar.
01:42There,
01:43the eau
01:44s'ecoule lentement
01:45vers le Rio Negro.
01:46During the months
01:47pluvieux,
01:48there are more
01:49inondations
01:50and the currents
01:51more strong
01:52so a large amount
01:53of eau
01:54can be seen.
01:55For many communities
01:56locales,
01:57the Kazichiar
01:58is much more
01:59than a simple canal.
02:00It is sacred.
02:01They look like
02:02a chemin
02:03that the ancestors
02:04have traced
02:05to reunify the great
02:06fleas.
02:07The legends
02:08say that
02:10the river
02:12Wayambo
02:13in Suriname
02:14can couler
02:15either west
02:16or west
02:17the river
02:18Nickery
02:19according to
02:20the number.
02:21The precipitation
02:22and the human activity
02:23are responsible
02:24of this habit.
02:25People install
02:26the ecluses
02:27in the river
02:28to detour
02:29an ecluses
02:30to help
02:31the rizicultors
02:32to obtain
02:33enough
02:34water.
02:35It is
02:36difficult
02:37to control
02:38the Wayambo
02:39and to know
02:40the river
02:42and the river
02:43will be
02:44spread.
02:45It is
02:46a real problem.
02:47If you already
02:48want to drink
02:49water
02:50at the same time,
02:51North 2 Ocean Creek
02:52in Wyoming
02:53is the place
02:54you need.
02:55It begins
02:56in the Teton
02:57and then divide
02:58into two branches.
02:59Pacific Creek
03:00joins the great
03:01river Snake
03:02which will
03:03finally reach
03:04the Pacific Ocean
03:05Pacific.
03:06Atlantic Creek
03:07is headed
03:08to the east
03:09in the river
03:10Yellowstone
03:11and Missouri
03:12as well as
03:13Mississippi
03:14to finally end
03:15in the Gulf
03:16of Mexico.
03:17If you connect
03:18the waters
03:19of the two branches
03:20on a map,
03:21you will get
03:22one single line
03:23between the Oregon
03:24and Louisiana.
03:25between the two oceans
03:26they never had
03:27used to use
03:28this way.
03:29They had just
03:30needed
03:31very small ships.
03:32Some scientists
03:33croient
03:34that the
03:35Fardy
03:36knew this way
03:37before the humans.
03:38they had to migrate
03:39from the river Snake
03:40to the river Yellowstone
03:41very likely
03:42in passing
03:43by there.
03:45The next star
03:46of our list
03:47could pass the
03:48powerful Mississippi.
03:49It is about
03:5012,000 years
03:51the Mississippi
03:52has begun
03:53to deriver
03:54to the Red River
03:55The Mississippi
03:56has remained
03:57its original path
03:58and the water
03:59of the red river
04:00is becoming
04:01what we call
04:02today the river
04:03Atchafalaya.
04:04It was once
04:05obstructed by
04:06trees
04:07on about 48 km
04:08and was not
04:09practicable
04:10for the navigation.
04:11In the 19th century
04:12the European colonists
04:13have removed
04:14all this.
04:15But the water
04:16has so changed
04:17that it could
04:18hurt the lower
04:19Mississippi.
04:20So people
04:21built
04:22special structures
04:23to control
04:24the way
04:25the water
04:26had to go.
04:27From time to time,
04:28half of the Mississippi
04:29could be
04:30entrained
04:31towards Atchafalaya.
04:32This huge amount
04:33of water
04:34is even visible
04:35on the photos
04:36of the satellites.
04:37The digital cartes
04:38and the computer models
04:39also show how
04:40the waters
04:41are divided.
04:42If these systems
04:43of control
04:44were not there,
04:45the Atchafalaya
04:46would probably take
04:47the top
04:48of the Mississippi
04:49The Nouvelle Orléans
04:50would lose
04:51as well
04:52water
04:54and the water
04:55along the Mississippi
04:56would suffer greatly.
04:57The Royal Partido
04:58or the ruisseau
04:59shared in Spanish
05:00in the south
05:01of Argentina
05:02transport also
05:03its waters
05:04towards two oceans
05:05at the same time.
05:06It begins
05:07in the Cordillère
05:08of Andes
05:09and traverse
05:10a forest escarpet
05:11all covered
05:12of trees.
05:13When he comes out
05:14from the canyon
05:15he enters
05:16in a larger area
05:17where a large
05:18large large
05:19one side
05:20of the south
05:21turns
05:22towards the south
05:23and ends
05:24reaching the Atlantic Ocean
05:25the other side
05:26turns towards the north
05:27and falls
05:28into the Pacific Ocean
05:29It's quite unique
05:30as the bifurcation
05:31does not happen
05:32in a plain
05:33but in a mountain
05:34it's a bit like
05:35a creux
05:36between the mountains
05:37mountainous
05:38You will not find
05:39a lot of information
05:40about the Royal Partido
05:41on most of the cartes
05:42this is partly due
05:43to the fact
05:44that the region
05:45has not been well
05:46in the 1800
05:47and partly because
05:48the ruisseau is small
05:49and surrounded
05:50many lakes and rivers
05:51more importants
05:52who usually receive
05:53the attention
05:54of scientists
05:55in addition
05:56there are no more
05:57models of public
05:58for this ruisseau
05:59However,
06:00images of the air
06:01and photos
06:02taken by the travelers
06:03and travelers
06:04have confirmed
06:05the existence
06:06of this bifurcation
06:07a numerical model
06:08also shows
06:09that if you
06:10vers the water
06:11exactly where
06:12it is supposed to be
06:13naturally
06:14in two directions
06:15Divide Creek
06:16is located just
06:17at the border
06:18between the British Columbia
06:19and Alberta
06:20Canada
06:21this river
06:22descends a mountain
06:23and joins a zone
06:24in form of the cell
06:25called Kicking Horse Pass
06:26where it is divided
06:27in two
06:28this is due to the lake
06:29summit
06:30which is located
06:31just west of the
06:32continental line
06:33of the partage
06:34of the eau
06:35a long time
06:36the lake summit
06:37was much bigger
06:38and probably
06:39could have caused
06:40the division
06:41of the river
06:42but at the time
06:43the lake
06:44and it is now
06:45that the west
06:46it has left
06:47behind him
06:48a humid
06:49sea
06:50exactly
06:51the most high
06:52like the Royal
06:53Partido
06:54Divide Creek
06:55does not appear
06:56on many ancient maps
06:57it is small
06:58and the region is covered
06:59with a dense
07:00so that even
07:01the photos
07:02not clearly
07:03the division
07:04of the water
07:05the best proof
07:06that we have today
07:07is from the national park
07:08of Yoho
07:09where a marker
07:10explains the bifurcation
07:11is placed
07:12along the road
07:13and if you are a fan
07:14of adventure
07:15you can take a short
07:16path
07:17which leads directly
07:18to the place
07:19where David Creek
07:20is divided
07:21and now
07:22what would you say
07:23to change the lake
07:24wallastone
07:25is in the extreme
07:26north-est
07:27of the Saskatchewan
07:28Canada
07:29the most fascinating
07:30is that it bifurc
07:31also
07:32near its north
07:33about 90% of its eau
07:35s'ecoulent
07:36dans la rivière Cochrane
07:37et se dirige
07:38de vers le nord-est
07:39tandis qu'environ 10%
07:40se déversent
07:41dans la rivière fond du lac
07:42et vont vers le nord-ouest
07:43l'endroit où l'eau se retrouve
07:45soit dans l'océan arctique
07:46soit dans la baie de Hudson
07:48dépend de quel côté
07:49de la longue péninsule
07:50elle se situe
07:51les cartes et les modèles
07:52montrent qu'il pourrait
07:53encore y avoir
07:54un certain écoulement d'eau
07:55entre les deux côtés
07:56de la péninsule
07:57donc techniquement
07:58ce n'est pas une bifurcation
07:59parfaite
08:00mais cela reste l'une
08:01des caractéristiques naturelles
08:02les plus fascinantes
08:03de la région
08:04la péninsule elle-même
08:05s'érode lentement
08:06et pourrait éventuellement
08:07disparaître
08:08mais les géologues pensent
08:09qu'en raison de la configuration
08:10en Y du lac
08:12l'eau continuera à se diviser
08:13en deux systèmes fluviaux
08:14quoi qu'il arrive
08:15bien avant l'arrivée
08:16des explorateurs européens
08:17les autochtones
08:18Chipewyan
08:19Dénésuline
08:20s'avèrent déjà
08:21que le lac Wollaston
08:22était spécial
08:23il l'appelait
08:24le lac Manito
08:25ce qui signifie
08:26esprit
08:27il croyait
08:28qu'il possédait
08:29des pouvoirs surnaturels
08:30en raison de sa position rare
08:31au sommet
08:32de deux grands bassins versant
08:34de la fin
08:35de la fin
08:36de la fin
08:37de la fin
08:38de la fin
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