Internal waves in the Strait of Gibraltar
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- Опубликовано: 11 апр 2012
- Internal waves in the Strait of Gibraltar.
Computer Graphics Animation of the outputs of a numerical model run in the Strait of Gibraltar showing the phenomenon of the internal waves produced by tides.
Software: ArcGIS Arcglobe, MATLAB
Physical Oceanography Group
University of Málaga (Spain) 
Наука
I was once told “try and learn something new everyday” .....well that was a really absorbing way of achieving my goal today, great video.
Thank you Niknoks! :)
The music was great for meditation too, my wife who was sitting near me asked if I was listening to a meditation music 😀
Beautiful presentation, and finally, music that supports rather than distracts. Kudos!
I could definitely watch an hour segment on PBS describing more about this. Start with when the strait became a strait, as I believe it used to be closed(Pangaea), then follow with this video and then a closing about how it effects the Mediterranean Sea now and how it has been affected in the past!!! Or something like that! Brilliant! Will watch again to try and understand a bit more.
Thank you for this video all who are responsible!!!
Thank you!
Worked 18 months dredging for Tanger Med 2 port...currents were crazy and changing direction almost every hour, especially near coast as we were
If someone is curious about the music, here you go:
April by Thomas Newman
:D I *thought* that sounded like part of the American Beauty soundtrack.
It’s the song from Revolutionary Road- awesome movie!
Thank you very much
His style I seem to recognise.
www.mixcloud.com/matejlukac/revolutionary-road-ost-thomas-newman/
www.mixcloud.com/JONATHANSTUARTBARKER/ I've used some of his music in my filmmusic mixes.
This is what the internet can do at it's best. Thank you.
It was uploaded on my birthday ! ( 9 years ago )
That makes it even better.
Wow that's perfect visuals and really helps us understand what happens in the straits. Thank you.
Thank you!
this was mesmerizing to watch!
Thank you!
I used to work in Gib, the live across the road in La Linea because it was cheaper. I don't know anything about the waves between Gib & Africa. But this presentation has visually shown & endorsed one thing. Apparently, it has been an ambition between Europe (Spain) & Africa (Morocco) to build a tunnel between the two countries/continents. However (and when I was in region & this topic came up), people always keep on saying it was IMPOSSIBLE because the sea bed was too deep. This presentation (from 0:35 onwards) endorses that talk & indeed, stumbling block. Fantastic presentation & very interesting information regarding that region of the world.
I am always fascinated by what happens under the surface of water; waves, animals, geological formations, etc. so this was a treat for me. Thanks for posting.
Thanks to you!
Gracias por la explicación detallada y excelente calidad de imágenes. Me encantó… 🤙🏼
Working on cruise ship, we always feel whenever we're approaching or leaving Gibraltar.
Thus seems to explain why the waves on the southern coast of Spain act so strangely. I've seen this in Malaga. Small, short, but very powerful and insistent waves. And cold, too, considering the area. If you're not prepared for this, the waves can knock you over and prevent you from standing up again because they are only 2 or 3 seconds apart.
This has to be one of the most beautiful videos I've seen in my life. Thank-you from Canada.
Thank you!
Not to sound rude but you haven't seen many videos have you? O_o
He said one of .
The answer I was looking for. Thanks!
Thank you too!
I liked that a lot. Thank you for the great work, it is worth it.
awsome. we need tecnology for this. we do not need technology for a new iphone every year. we need tecnology for science!!
Big thank you sharing this. Its amazing for me to see it. I didnt know this
Thank you!
Very interesting stuff and awesome background music! A lot of people should learn from you!
Thank you!
Fascinating. Thank you!!
Thank you!
Great depiction of current (no pun intended) knowledge. I am in awe of what can be measured and depicted through modern techniques. And it is nice to watch, well done!
Thank you!
Very interesting study with excellent graphics.
Thank you!
Live nearby, have heard about how difficult is crossing strait in a sailing ship. This video explains well wy. Thanks
Interesting work.
Thank you!
This is wonderful in all respects...
Wow.Wonderful.
Can't believe it was uploaded 12 y ago
Excellent research team - well done!
Thank you!
I am from that area of the strait on the side of Morocco, non locals often drown and die in this area because this phenomenon is unknown and people who are not familiar get carried away with the strong currents, especially in the wide open beaches in Tangier that aren't shelves by cliffs or mountains.
That is fascinating.
beautiful music and animation....
the Universe is electrical.... Life is structured water....
Thank you!
Amazing job.
This is fantastic information! Thank you
Thank you!
The movie, Das Boot, brought my attention to the flows in the Strait(s?) of Gibraltar and how the submarines deal with them. Thanks for the posting. Good on ya mates.
Beautiful simulations!
Thank you!
What an amazing study. Just imagine what devastation would result if the shape of any part of the strait were to be changed. Tide forces would create massive tsunami waves that could be very damaging to the shores inside the Med. What a fun idea to play with the shape of the ocean flood or sides of the strait and watch what happens.
Outstanding.
Thank you!
Wonder if these underwater waves could influence the formation of rouge waves?
Oops - rogue waves.
Kamelhaj
of course!
everything is waves.....
i believe not.rogue waves happen when two different wave currents get their frequencies in syinc,meaning they are going in similar direction and overlay each other until both get synchronized generating that one,big wave-rogue wave...but science haven't said last word on this so maybe they should add your question in equation..
Kamelhaj
You mean "ROGUE" wafes.???
literally *every* wave influences the formation of rogue waves. They are often just a convergence of otherwise normal waves in a specific location that adversely affects us.
Very interesting, thanks!
Great little video...makes one want to know more...thanks
Thank you!
Brilliant work.👍
Thank you!
Thanks a lot for this amazing modeling ! does the same exist for the Dover Strait ?
This is Crazy! 😃
I loved d video as well as the background score taken from The Revolutionary Road.
Thank you!
The best water simulation that I have watched.
Thank you!
Perfect presentation 👌
Within the past 2 weeks I watched a generally informative video which asserted there was no water or salinity exchange between the Med and the Atlantic. I immediately thought that was wrong because Jacques Cousteau proved that decades ago with a sail lowered deep into the water of the straits, which towed his boat right through the strait! They didn't even mention Cousteau. I was perplexed and a little angry at this. Cousteau's experiment pretty much proved the point. Now, we have this hugely scientific work describing the actual flow patterns-- thank you, Gofima UMA!
Thank You! :)
Beautiful
Thank you!
In this era this is how we should be instructed. It is so much more understadable the whole situation rather than a draw on a sheet
mediterranean sea: breath
atlantic ocean: here take some cold water
No wonder we had so much trouble getting U-boats through there.
That was cool.
Awesome.
Thank you!
Muchas gracias
Interesting work, I wonder if this phenomenon could be harnessed for power production? It is reliable, regular and involves a tremendous amount of energy.
Thank you. Actually we wrote a paper on a study of the reliability of exploiting the tidal current power to obtain clean and renewable energy. Have a look at it oceano.uma.es/pdfpub/2014Energy%20of%20.pdf
I made the same comment before I read yours. Great minds think alike.
I believe I recall plans under consideration in the early 1970s to build a dam across the strait, to use for power generation. It never got further than the concept stage, I believe. See "Atlantropa" for a 1920s version! On the whole, I'd just put solar panels in the deserts that border the Med - much easier to service and much more reliable than anything immersed in salt water.
Falbert Forester ...you sound like an engineer. Would it be possible to build a series of dams on a larger river or does the weight ,not speed,of water turn the dynamos?
ThatCrazy Drunk ...these would be superbly engineered undersea turbines that take advantage of the powerful, reliable tidal currents.
magnificent work thank you
Thank you!
Very interesting phenomenon! I wonder what initially motivated research into this? Was it driven by 2:00 satellite observation of the surface signature? Also, as a numerical analyst myself, I would be interested to know what sort of mathematical models and solvers were used to create the simulation. I assume it probably includes partial differential equations - perhaps Navier-Stokes? Were any papers published on this work?
Thank you Poly! Internal waves in the Strait of Gibraltar are a very well known phenomenon by the local fishermen. The surface signature of the waves train can be clearly detected from a boat. Our one is one of the most accurate modeled description of the physical nature of the phenomenon and it is made with a high resolution numerical model (this is a version of the MIT general circulation model adapted to this very complex region) capable of solve a parameterized version of the Navier-Stokes equations.
The Germans figured that out long time ago , that’s how they got the submarines thru in both direction without using the motor
Interesting Video. I Never gave it a second thought about the water distribution between the Atlantic (really salty) and the Med. ( salty but not as salty as the Atlantic ) . Tha is! Gives me something else to look up !! Lolol
this is really cool
Thank you!
In ancient times, the Mediterranean was a dry basin blocked by a landmass at the straight. Something caused it to breach, causing the largest waterfall in the world until the sea filled.
I surprised myself, very interesting, thanks
Thank you!
I always suspected that but could never prove it.
Thanks.
If we remove the sill somehow, will the waves stop as well? How will this affect the flow of water through the Strait every tide cycle and what effect (water rise/fall or changes in water level) it may have on the Mediterranean Sea in general afterwards?
Wow! What an interesting comment! YES! The removal of the sill would include the stop of internal waves formation. The flow in the strait would be characterized by a reduced mixing between the two waters, resulting in a saltier and denser Mediterranean water flowing out to the Atlantic Ocean and a fresher and warmer Atlantic water flowing into the Mediterranean. Subsequently the density gradient, which drives the own exchange, would increase and the flow itself too. I'm not sure on what would occur to the Mediterranean Sea...should the inflowing water be fresher and warmer, the sea level could rise correspondingly for steric expansion, but it is only a speculation. Thank you for your comment!
I wonder what changes in dynamic would be if the Camarinal sill didnt exist anymore.
Thanks!
Imagine WW2 times when German submarines had to evade British patrols and enter the mediteranian see.
Edward Snowden That,s before sonars were introduced to servis. Destroyers had just listening devices.
I was told that the Mediterranean has been sealed up numerous times at Gibraltar creating a dry lake which then floods again in a vast waterfall each time with unimaginable ferocity.
Yes! It was a geological period called Messinians and the Mediterranean closure event was called Messinian Salinity Crisis: en.wikipedia.org/wiki/Messinian_salinity_crisis
Perhaps its going to happen next year due to global warming! I read it on the Internet.
Andy harpist
Remember the biblical flood, Noah, etc.????
yes indeed mr r. I see no reason why the two cannot be connected
Very cool.
Thank you!
muy interesante ;-)
Gracias!
God that's deep!
that’s what she said
looks like breaths or heart beats
Yes! The tidal breath! :)
Extraordinary. Considering the many sieges that have taken place in Gibraltar over the centuries, I wonder how these tides affected fleets operating to support or besiege that place. Would the internal tides caused by the Camarinal sill slow down the progress of sailing ships on the surface? Were there certain times of the day when it was best to catch both wind and internal tide?
Interesting comment! Actually I think that internal tide cannot affect the sailing very much. They manifest as very weak ripples on the surface. Conversely the strong inflowing current does it! And i'm absolutely sure the ancient sailors knew it and took into account when sailing out from the Mediterranean.
Thanks! I've been looking at archival sources for Royal Navy operations around Gibraltar in the 1730s, and they only mention the wind.
mmmhh...I'm really sure they were used to take into account the surface current...it reaches 4-5 knots every tidal cycle...
With reliable powerful tides, why don t we harness this energy?
Right! It is quite complex from a technical point of view, but undoubtedly it would worth the try. We made some studies in the past on the optimization of the choice of the most reliable place to install a tidal turbine. oceano.uma.es/pdfpub/2014Energy%20of%20.pdf
Frank Joseph 6
Gofima UMA I'm really saddened by the pesky politics that won't allow wonderful engineering like this to come into being...
It's 3 in the morning. I'm sleepless and watching a video on wave dynamics in the Strait of Gibraltar.
What is wrong with me?
nothing bro😉
Me 2 exactly at the same time
Nothing that bad. You just need a woman to share your bed and your life with.✔😜
Nothings Wrong with you, besides you not being able to sleep. You just needed to watch some wave action to bore I mean lull you to sleep. LOLOLOLHAHA
wow.. que interesante...ahora voy entendiendo las historias de marineros andaluces que hablaban de extraños "golpes de mar" en la zona del estrecho....
How interesting
... now I understand the stories of Andalusian sailors who spoke of
strange "blows of the sea" in the narrow area ....
Ya :)
+1.21Gw
"estrecho" se debe traducir aquí como "strait" en lugar de "narrow", ya que estamos hablando de un elemento geográfico.
"narrow area" se traduce como "zona/área estrecha", no como "zona del estrecho (de Gibraltar)".
Recuerda, los ingleses (y los alemanes también) usan la palabra de raiz latina igual que hacemos nosotros.
Castellano = estrecho
Inglés = strait
Alemán = Straße
you should be able to power europe with that current
good video, very interesting, 1:58 the photo from NASA reflects it perfectly ..
Thank you!
super amazing
Thank You!
Hi there, anyone knows where the music is from? Ooops, just found the note.
That's why Dönitz declared U-Boot were bottled in Mediterranean
Yeh, I dig the creepy music👍
What adverse effects does this have on navigation?
None. These waves occur at the interface and present as only few cm at surface
max e'tutta colpa tua se sono qui
Wicked Cool 😎
What song is this???
How high are the waves? Enough to surf?
Nop! :) They are internal waves, while their corresponding oscillations of the free surface are only few centimeters.
I'm sure there must be dubious packages at the bottom as well ..!
Science is sooooooo cool!
this can happen any where if the construction engineer decide to put submersible obstacle to let earth water pumping pulsing creating greatest wave season thanks for your information don't let other knows
very interesting
Thank you
fantástico saber
Could we use it as energy source?
Maybe...It is quite complex from a technical point of view, but undoubtedly it would worth the try. We made some studies in the past on the optimization of the choice of the most reliable place to install a tidal turbine. oceano.uma.es/pdfpub/2014Energy%20of%20.pdf
thus, Ulisses never left the Mediterranean sea ...
i enjoy it
Thank you!
wow the mouth of a bottle when you try to pour without an airflow.
Now i recognized why the German commander of U-boat chose to cross this strait on surface instead of diving... in film: Das Boot!
Sure!
He should have used a "Flintstone submarine", with holes in the bottom through which the crew could have put their legs and walked over the sill.
Interesting.
Thank you!
Waves above waves
How many people have swam this?
Same as at Bali Strait..