Japan’s 400 Kilometre Tsunami Shield
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- Опубликовано: 29 сен 2024
- Meet one of the most important pieces of concrete in Japan.
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This was a very well researched video!
As someone lucky to live on Japan's east coast, I've traversed almost the entire length of the tsunami shield over the years. The locals seem to have mixed feelings on them, many sacrificing sea views for safety. The government didn't give many towns and villages much choice in the mater unfortunately and in my view, they've gone too far and built too many. Just last week I drove passed a beautiful beach that had no houses or villagers nearby, but the entire area has been smothered in concrete. Still, for the most part the reconstruction in Fukushima, Miyagi and Iwate has been impressive and many locals are optimistic for the future, despite the nightmare they endured.
Just a silly idea - they could have built them a few hundred meters inland. That way people would have a choice. Those who prefer the unobstructed sea view but don’t mind getting their property destroyed and rebuilt could continue living on a natural coastline while the others who prefer safety over views would live behind the wall. With some quick escape routes through/over the wall in case of emergency, which would also serve as a way for people to get to the beach without walking/driving long miles around the wall.
Hi
Oh hi Chris.
@@miroslavmilan That's an excellent compromise!
I'd imagine the intention was to protect as much property as possible as well, so the wall was showed right up to the coast. On the other hand, it's really an eyesore for a community whose livelihood largely relies on the sea.
@Abroad in Japan, I love your videos in which you interview people who were affected by the tsunami and how they picked up their lives after. I have recommended to dozens of friends, who all liked it just as much as I did.
The 2011 Tsunami hits me hard, emotionally, every time I hear about it. I was on Maui during that, and we were terrified that we'd get hit by the tsunami. Thankfully we didn't. My heart goes out to Japan.
TEM UM FATOR LA EM 2017 POR AI EU FALEI BEM O QUE VEM CAUSANDO ESTE DISTURBIOS NA NATUREZA AI . SOBRE RASTROS QUIMICOS E GÁS CARBONO . QUE ELES DO MAL ANDA ESPALHANDO NA ATEMOSFERA . CAUSANDO CHUVAS E TEMPORAIS FOR DA ESTAÇÃO PROPIA . COMO MANDA HA NATUREZA CAUSANDO UM DESENQUILIBRIO TOTAL
☁🛩☁🌩⛈🌨🌪
🏭🌁🗻🏔POLUIÇÃO E O DERRETIMENTO DAS GELEIRAS SIM ELEVANDO O NIVEL DO MAR . QUE ELEVA AS ONDAS GRANDES TISUNAMI SO EXISTE PORQUE ENCONTRA O NIVEL DE VOLUMES ALTERADO DE AGUAS NO OCEANO SE ELAS ALMENTA O ELEVADO TISUNAME TBM E GRANDE EM ALTURA SUAS ONDAS .
"Be like water" is a martial arts tenet for good reason. No matter its state, it will find a way to create and destroy.
and don't forget that one "the water flow"
Don't forget, water also vaporize. So if one day you find yourself in a tight spot, just vaporize yourself.....
Netherlands:Take Notes,Take Notes
@ᴛᴀᴘ ᴍᴇ ᴀɴᴅ sᴇᴇ Emily I don't know who u are lol ,I guess a group of u commentary are trying to trace my comments for some reason lol ,Or maybe youtube is just messed up lpl
I’m loving that you’re getting more primary source interviews in your videos. The quality is top notch!
ruclips.net/video/Ptz5XqJ0z2Y/видео.html
What a beautiful video this was. It reminded me on my own experiences with the ocean and how I nearly fell to its tricks and power. Yet I still find it fascinating how Japan went to it head first to atleast have a defense because it could happen any day again.
I was always thinking : „why don’t they just build huge walls to protect themselves from these tsunamis because the world knows for damn sure Japan will probably go down from natural catastrophies such as Typhoons, seasons with huge amounts of rainfall, Tsunamis, earthquakes and so on.“ (Sadly half of it happens yearly to them)
This video gave me the clear answer I wasn’t thinking about.
In a Country where citizens work their asses off to survive and get food on the table for their families loose one more important thing they’re attached to… the sea, the ocean. The view and smell, the cold breeze on a warm sunny day straight from the ocean.
Everything combined gives us a sign of peace in our hearts, which gets completely stolen from big walls.
So what are we going to do?
Plant forests over forests?
Build larger wall systems ?
Escape and flee from the shore lines?
In my opinion there’s only one thing you can do against nature : Work with nature.
Walls are straight answers against it while planting trees and creating big green parks would only help against said catastrophies and for the people living there mentally.
Fear of death always scares us and drifts us apart from the ocean. I, myself was caught in such huge waves once and drifted, nearly forced away by pure pressure and waves.
How did I manage to get back and survive? I had no power, my legs stopped moving. All I had was a ball that I tried to get back before it gets lost to the waves pushing it back. I pushed my chin over the ball knowing it couldn’t sink and would always push itself upwards and I slowly paddled with one arm while I tried to keep my head on the ball with my other arm.
After 5 to 10 minutes everyone realized I was in danger and immediately swam to me and helped me to get back to safety. Later on a very smart guy told me I was around 500 meters out (which I can kind of agree on because when I started to swim back everyone suddenly looked like little ants far away running around on the sand)
Am I scared of the ocean now? Hell no.
I even got more interested into diving. I started to respect the ocean and it‘s power, and now I know how I can survive from it.
That’s how Japan is doing it right now. They failed, put themselves back up, respecting it even more than before and trying to find ways to never let it happen again.
I hope they find a good natural way so everyone is happy and is able to feel safe again. Amen.
Japan "Build That Wall!"
The efficiency of the Japanese never fails to amaze me, and I'm half Japanese born there. Too create this much steel reinforced concrete walls in such a relatively short time is mind-boggling.
@4:59, to me the tsunami felt like a big fun and natural swimming pool.
The walls may be unsightly and not aesthetically pleasing, however it just may be the difference between your house staying put, or being demolished into pieces and pulled into the sea.
ESTE PEACE E O VICE PRESIDENTE
everyone gangsta until its a Lightning not a Tsunami that hit the wall
Whatever that wall size is they need to double it.
I may sound pessimist but here are my thoughts-no amount of technology and human efforts can completely mitigate natural disaster
no that's the undertone of the whole video I kinda felt to be honest. It's a story on the newest effort to increase our resistance against the opponent that the video kept reminding us we will never be able to stop.
this is Japan home of gadgets that work lol, surprised they didn't build the walls to rise when there is a threat like in one of their anime shows :D
@L0rdCROISSANT
Except for Tokusatsu shows. Building a wall means a symbol of an antagonist or fall of vain scientists.
AKA Kamen Rider Build
If the same kind of tsunami walls are suggested in some parts of the world, there will be people complaining and saying things like "my coast, my lawn, my choice" and the coastal landscape vista matters more than safety against the quake-induced tidal wave.
Another impressive construction in the same spirit is Tokyo's underground flood control tunnels & cisterns.
It's a big problem for Japan, which originally lacks flat lands, but now this is worsened by inability to use costal flat lands. On top of that I personally don't see how walls can help - there is a lot of moving water and it needs to go so somewhere, walls may stop it for a while but eventually it will overflow if the wave is strong enough. But what do I know.
I just realised those raised pathways that I always see on animes are actually tsunami walls.
They should build walls like AOT , made from titans💪
It was a real tragedy event in 2011. My heart goes to all the victims. Having watched all the videos that I could find on RUclips, I can’t help thinking that the best way saving more people is not focusing solely on building higher and more walls. They help in so far as giving more time for people to escape - possibly 10-15 mins more - if the tsunami is higher than 15 meters. The point that I am making is that … Did you notice that all the video clips were taken by people mostly on top of a solid tall building even though the water and debris were running pass just below. It seems to suggest - just my humble opinion - that it would be more effective to mandate tall buildings (and their design) as evacuation points, plus building more escape high points in those towns located by the sea. These escape high points have to be strong enough to with-stand the torrents and they are dotted around the town in no more than 15 mins of reach. Anyway, I am not saying that the walls are not useful, we may need more ideas in addition to the walls.
Godzilla laughs at yor puny wall.
Bangladesh: Write they down, WRITE THAT FU*KING DOWN !!!!!!!!
AoT adaptation looking good
Thank you for the video. This is over reliance on data alone, that a higher wall would help lessen the impact, buy time so that more can evacuate. In reality, people would move on to other areas with no wall, especially the fishermen and related industries around these unique communities. The wall would be "protecting" unpopulated land. Lesson learned - Don't fight Nature, learn from it, live with it.
I actually like the idea of building forest walls along the coastline. One force of nature can be efficiently tackled with another form of nature. Even mangroves are a brilliant solution but i dnt knw if they are fit for Japan's climate.
Yes and trees are intelligent they deep root themselves accordingly they will definitely slow the pace of tsunami. And well next generation alarm warning system should be installed. Evacuation to be carried out swiftly.
What about building huge/wide trenches along the coast, maybe a few miles deep. Wouldn’t that reduce the energy of the tsunami?
@@fplprefect5176 Nope.
@@fplprefect5176 Trenches can help in case of hurricanes, typhoons but not in terms of tsunami due to the amount of water and force it brings. Systems like underground storage spaces in Tokyo are already in place to tackle floods and events of massive rainfall.
Its tsunami we talking here not just some hurricane or typhoon
Can't believe that it's been 10 years since the tsunami. It feels like those 10 years just flew by.
I’m with you there. It feels like a while ago but not THAT LONG😱😟. To think it actually happened in the same year as the royal wedding between Prince William and Kate. That feels like a pretty good indicator. So much has happened in the past 10 years that feel like they’ve gone by in a flash, and yet at the same time hardly anything has changed at all.
i know we're almost at PS6
@@danielwhyatt3278 really? they're on their 3rd child i thought it was much longer ago going by that, though I've gone from my 20s to my 30s so I guess that makes it feel longer 😅
The ocean is surley dying 💚
That is how it goes for us humans. We have incredibly short lives.
In Chile, after the 2010 earthquake and tsunami, the aproach in the city of Constitución was to build large forest areas in the coasts to laminate the water (and also create new green areas)
VIU COMO EU AJO EM SISTEMA CONTRA ESTE CRAZYS E A SIM E SEMPRE SERÁ A SIM . ENTERRAR ELES DE VEZ .
@World2021Order Tokyo isn't the richest city on Earth you goof. New York has more billionaires than all of Japan combined. Tokyo isn't even the richest city in Asia
@World2021Order it's 2022 now, you're passé already
@World2021Order by GDP? lol sure if you think it is an accurate measure of wealth. it is only number 1 because of its population size which is a part of the GDP equation.
With its population aging fast, not much time left to gloat before its GDP slips lol
Just facts boomer
@World2021Order uh no - NYC and London are the two most expensive cities in the World
I really enjoyed reading through the innovative and creative solutions mooted in the comments. It's great to see such discussion stimulated on big engineering projects. A couple of broad themes I noticed we're 1) build a concave/wave return wall and 2) the issue of sea level rise. 3) the use of trees etc.
With 1), concave walls with wave return crowns and similar are designed to reflect wind wave energy back seaward. The reason this wouldn't work in a tsunami is that a tsunami is a very very long wave (km in length) in comparison to a wind wave (10s of metres in length). Thus the wave energy is spread out over a huge length. This is why the wave takes 10/20 minutes to inundate before the water begins to recede. It is analogous to a open channel flow like a river in a continuously rising flood condition. So wave energy reflection, which can also rely on the wave breaking to some extent, is not applicable here.
2) sea level rise. The point is that the current infrastructure is built on a known mean sea level. Once we start getting the SLR effects then such infrastructure might not be able to perform its function as well. Here, a 15 m tsunami wall may then be only 14.5 or 14 m in the future.
This strikes at the core of the debate: do we build hard sea defences in a 'hold the line' approach or do we retreat from the shore line completely, or do we use natural defences or a combination thereof.
3)On mangroves and forests. It's proven for hurricanes/typhoons and storm surges that these can help a lot. But it's less clear on tsunami. Again because of its open channel flow like behaviour. The tohoku tsunami of 2011 resulted in a lot of said trees becoming floating missiles. Some of our experiments also showed that the flow constriction effect (reducing the flow area by adding obstacles) can result in higher flow velocities through the remainder of the area.
There's much work to be done in this area still.
Whoa, you were in the video. Hello sir, thanks for the work you and your team do!
Your in the video right
Very wise man
Hello.. 👋🙂 🇬🇹
Damn fascinating stuff. Yeah I think planting trees is a catch-all for a Bunch of good intent. We see them as inherently stable yet flexible. But some of these forces are not the same. Like you said the reason mangroves help diffuse hurricanes doesn't make them effective for tsunamis
I wonder if they could make a feature out of the walls - creating a raised embankment on the land side so that the view can be enjoyed again, mainly as public parkland or as private enterprise leisure districts. I’d imagine that amount of earth against the walls would also help reinforce them
The amount of earth to raise the land to wall level would be unimaginable
@@alexroge6495 for sure. maybe that commercial element of leisure districts could offset the expense, at least in populated areas
@@alexroge6495 Could still be a very good idea.
@@TheBritalianJob No way you get that much dirt, walls would be 3 times thicker because of the editional weight and the walls are close to homes - which means these would be demolished to rebuild them in a heavely indebted japan?
@@bliblablubdiedadup742 yeah it only makes sense in populated areas where the locals feel “imprisoned” by the wall. And the causeway would only need to be wide enough for a pedestrian path and some leisure facilities to take advantage of the new view - the commercial element of which would pay off the public works
why didn't they make the inside of the wall a ramp like they do in denmark so it looks more like a hill from the inside. it would still block the view of the ocean but from the village it would look like any mountain side village surrounded by hills and forest.
Just get 🇳🇱 Dutch and 🇯🇵Japanese engineers around a table and sea flooding problems are no more!
Did you watch the video? There are no easy solutions.
@@unvergebeneid yes there are
Somehow I find this comment quite arrogant, humans can harness the forces of nature, but we can never assume that we can defeat the nature's fury! With a name such as Economics in Action, I'd thought you would know that there is not enough money in the world to defend against sea flooding for all coastal population centres at risk.
@@CrasusC You can force people out of there, solutions are easy but the governments are weak nowadays.
@@PROVOCATEURSK Do you know that 40% of world's population lives on the coast? Majority of their livelihoods depend on where they live? And many of them will starve if you force them away from the coast? Not to mention that the world's economy will definitely collapse, resulting in famine and hyperinflation if what you are proposing is put into practise? The damages done will be far greater than the Tsunami's when they occur.
What you were proposing is a "throw the baby out with the bathwater" type of solution, which would be far worse the the problem.
They should make three 50 meter tall walls and call it: Wall Maria, Wall Rose and Wall Sina.
I live in Japan and was driving along the Sanriku coast last week. It really is remarkable how far Japan has come in 10 years.
Fukushima almost failed safe. But for the location of the back-up generators and heat-exchangers, there would not have been a meltdown. The plant survived the M9 earthquake, but it was the size of the tsunami, (nobody imagined it could be that big), which overcame the back-up systems. Nuclear power is pretty safe, built on modern systems, away from seismic areas, it is highly unlikely a Fukushima MK2 would happen again. The tsunami killed way more people, over 20000, than the meltdown, less than 600.
Immediate deaths you mean, right!? The Fukushima meltdown caused a problem way more serious than the tsunami, the land that is. Like in Chernobyl, a huge plot of land is now abandoned, and it will be for at least 100+ years. So no, nuclear power is not safe, it can acctually be considered the least safe way of getting eletric power, if you consider the risk of a meltdown, even more if the plant is next to a huge population area, like Fukushima is.
@@rriedel2671 Fukushima killed 1 person from radiation, there were more deaths due to the panic of an evacuation
@@rriedel2671 Chernobyl isn't completely abandoned, lol.
@@rriedel2671 having a home near a coal debris mound.( after they have burned the coal )not to mention, all the toxic heavy metals.. coal kills more people than atomic power. it is far more radioactive than living next to a well taken care of nuclear plant..
The next nuclear plant incidents will probably happen in the united states and be due to a lack of maintenance and supervision, lack of investment and care.
Why do I feel it will happen there?
Wikipedia source: [Nuclear power in the United States] As of October 2014, the NRC has granted license renewals providing a 20-year extension to a total of 74 reactors. In early 2014, the NRC prepared to receive the first applications of license renewal beyond 60 years of reactor life, as early as 2017, a process which by law requires public involvement.[10] Licenses for 22 reactors are due to expire before the end of the next decade if no renewals are granted.[11]
Trump: I’m going to build a wall
Japan: hold my sushi.
And you can't walk through this one XD
@@FreedomIII
And it's cheaper since Japanese have the Martian Pandorian Box to quickly build the wall.
That interdimensional machine can prop it up in 10 seconds, assuming no one get caught in it and be catapulted to outer space.
ESTE AI TA CADA VEZ SE EMBARAÇANDO . EM SISTEMA DE REDE CLONADA .
Japan rebuilt a 6 mile stretch of road after the tsunami a day later and yet there are areas of New Orleans that still haven't been rebuilt after Hurricane Katrina in 2007.
Hold my sake
I just finished watching the video about the wooden skyscrapers. I just love the B1M, they always have great video
Thank you
They should have just covered the distance with weetabix they would soak up any tsunami.
Japan is just one incredible country!🤩
While China isnt one
@@ticksunbs4944 What do you mean?
Are you sure?
Japan's number one problem is meth
@@theemightymuffin what ?
i don't thing it will stop a ship being driven by a tsunami
there go's the wall
I still can't believe they put the Fukushima emergency generators on the ground floor and not on the roof. How did they not see this coming?
On the roof makes no sense! Imagine going to work and going on the roof. No way anyone puts stuff at the top
@@timberwolfe1645 it’s the 21st century. We have elevators. We have the technology.
Hey the channel reached 2 million subs, let's go!
The subscribers need to start watching the videos, then each video would have at least 2million views…….
I am sure they didn't name the effort "Project Canute" because, well, you know....
It might be a different scale to the construction this channel normally features, but could you do a video on bicycle highways in Europe? Or just cycling infra in general?
“Not just bikes” is a really nice channel that has many informative videos on the cycling infrastructure.
@@patriciaramsaroop5108 I know, it's great.
@@asdsdjfasdjxajiosdqw8791 or city beautiful
If it happen in usa. People ready die without wall lol. Waste of time and money to build wall. It should let sea water go in and out instead. It is racist to against water lol ;D
@@asdsdjfasdjxajiosdqw8791 wtf? bicycle highways? How fast can you cycle again?
It's always weird when people get smart and start talking about the "cost" of a literal life-saving structure. Tell me how much a human life cost if you wanna talk about disaster defense.
It's always weird when people comment on a video without having watched it. If you had watched beyond the first 15 seconds you'd realize the cost they are talking about is the cost to the human habitat and the relationship that these walls have on the towns they surround, not the number of yen.
@@Noubers Imagine talking about human habitat when it's about human life. Lmao. Pretty sure those barely swept away wished the wall was an inch taller. But I don't expect something smart from a person who thinks "cost" means only money. Then fast to come to a conclusion while lacking some brain cells.
@@Noubers They literally complaining about declining fucking 'tourist attractions' and 'sea sights'. Pls, write that shit on those tomb stones whose died to the disaster.
this concrete prison border looks horrible and it's not even guaranteed that it will protect people from the next tsunami... I hope they will bring The Morino Project to life in the near future.
They could at least build the upper half or so out of glas ... if its really just the hydrostatic pressure like this guy said then it should work.
Residential Owners: I don't like the wall, it blocks the ocean view and I feel like I am in prison
*Tsunami comes*
Residential Owners: Thank god those walls were there.
in some regions near by sea In sendai city, people must not build homes.
the areas are flat and if tsunami comes, inhabitants cannot escape...
In those sites they tend yo built tsunami evacuation buildings which must be 2 stories or higher than the expected inundations dephts
india also encounters high tide problems in cities like mumbai every year since 2011 but govt is just eating money in form of taxes and doing nothing
I love this video B1M, I visited Japan and the Fukushima area, as well as had a private tour because I studied it and was fascinated, the most incredible thing was seeing the power the tsunami had, I stood ontop of a seawall and saw it had still damaged the first 2 stories of the building behind me, I saw concrete cut by the power it was incredible and fascinating!
That must’ve been quite an experience to see it afterwards. When did you visit? I really want to go along to the Fukushima area someday. Not just to see the damage but how the area is truly recovering with my own eyes.
Your videos always get a thumbs up at the start because i know whatever is coming, it will be excellent!!! Cheers Ausgranny 🇦🇺🇦🇺👍👍👍👍👍
ruclips.net/video/8paX3Ya79iQ/видео.html
It is Johnny X the Japanese rap artist who is really good
@@ghostrighter6530 SE EU NÃO FOSSE REAL PORQUE EU ESTARIA PERDENDO TEMPO EM VOS COMUNICAR. E VOCÊS QUE TEM QUE CAIR NA REAL DESTA TURBULENCIA EM QUANTO E TEMPO .
@@marcorodrigues8303 ruclips.net/video/dgC1Tki-VnM/видео.html
What an ugly blight on the coastline, and to rub salt in the wound, most experts agree these walls wont do much to stop a tsunami anyway. Once again the Japanese government makes awful, incompetant decisions.
It'll be as useless as Louisiana Levee during Katharina imo
The high walls really aren't very pretty. Architects and engineers need to do better!
I like them. They look very solid and brutal. A symbolic punch back to the see.
I couldn’t agree more. Perhaps they should consider trees or vines that grow on the wall to make it look environmental friendly.
I was there in 2011. That was nuts. I mean I was closer to the west coast than the east but I felt that earthquake and I was there during that radioactive crises. 😵💫
I know they are there to protect people, but living behind a four story tall grey concrete wall instead of having an ocean view just seems depressing.
Is it really worth it to be safe from a disaster that hits every 100 years if it means you have to lower your quality of life for 100 years? I think I would prefer investing into early warning systems instead if I lived there.
I'm sure there was at least one town that instead raised the town.
Regardless of what they did in the past. Modern Japan is a great aspiration for the world to look up to.
They need to apologise for what they did; like Germans.
@@АгронДепартье why would the people who have never done anything wrong in their lives apologize? you want them to revive the ones who actually did it?
@@kumoj It is called historical responsibility. Why white people in US have to acknowledge wrong doings of previous generations versus black ? Anyway - ask Asian people if they (and not me) want Japanese to apologise. This generation benefited from their parents' evil.
@@АгронДепартье No they don’t.
You might say "the Great Wall of Japan"
Waves: 15 meters
Wall: 14.7 meters
The problem is that most of these calamities evolve over time. I love the artificial cliff suggestion but I want to imagine how much earth Japan can fill to spread across 400 km of shoreline.. Well researched video as always.
Lucky for Japan much of the east coast is protected by mountains high enough to break the impact of the wave. So the only problem for them are the flat pnaes that are exposed to the sea
At least paint it with something.
Agreed. The country is right for putting these walls up, but make it less boring and brutalist.
In my opinion they rather should build some protection system on water that stops or weakens the tsunami long before it hits the landscape.
Impossible since tsunami waves approach the coast at 800km per hour, and they come in several waves, with an absolute force
Respect ✊Japan 🇯🇵
ありがとう🥰♥️
この動画は学びがある。👍
Goddamn Tsunami always trying to get through our City Wall of Water!
Fantastically made video.
Thanks! 🙌
How do you get to know about these constructions in the first place, I mean from where do you get your video ideas? I am a video editor and I really like and enjoy your content, is there any chance that I get to work with you? @The b1m
but it's sad that the wall blocked 400km of views to the sea to some extend
HOW RIDICULOUS , TALK ABOUT MAGIC BEANS ! THEY WERE WELL PREPARED UNTIL THE WAVE HIT ! THOSE WALLS ARE ABSURD ! the building's need to be built above the ground , the streets like canels , small bridges need to be incorporated into neighborhoods , their entire system of thinking has to be scrapped , and replaced with an enlightened thought process - what's the point of living near the sea , if you're surrounded by a wall , which could never protect you anyway ?!
Thanks for this, great video as always😀😃
Drove the coastline from Tokyo to Misawa in1980s; decision to build gigantic sea walls was more of a political decision then risk reduction. What a blight on the land. Money would have been better spent relocating villages and towns upslope and just left sacrificial infrastructure on the low lands which could of been accomplished with much lower walls.
Wonder how people will feel about the walls in 100 years much less 500 years.
Totally agree.
I don't know in 100 or 500 years but in 20 years most of these places will be unhabited due to ageing population.
These constructions have no other meaning than paying bribes to retired politicians with crushed jobs in construction companies, giving jobs to the local citizens and boost GDP for a few years thanks to needless concrete production.
Correct, consolidating them into safer and well protected cities is the best approach. Most these towns will be deserted soon, due to a mix of demographics and internal migration to better places.
The money spent could allow for high density housing in larger cities anyways, and protection systems for those places...
@@有希長門-n5c Japan has made major error with it's land management.
Building uge concrete walls to protects old population that won't be there in 20 years from tsunami coming once a century is a total nonsense, both in term of city planning and protection of environment.
Japan will face a ghost town problem soon. It's time to think about how to remove these human made structures to give nature some place back.
If not the countryside will become a huge open air rubbish site, with rotten constructions and soil pollution everywhere.
Japan deserve better than that.
They should design those wall with bit of curvature
So that it can use flow of water against the water 🤷
Just an FYI, tsunamis have nothing to do with climate change. Yes storms might occur more frequently, especially in the tropics, but tsunamis are caused by earthquakes, and are entirely different phenomena.
Of course if the sea level is higher that will just add to the tsunami height.
But the point was that SLR will make such current defences less effective because they will be relatively lower than their design height
Exactly!! They lost their beachline!! Their ecosystems!! I feel sorry for the people living there
Japan need the "Founding Titan"
Build to protect the city and reduce the impact...but it doesn't mean that you don't need to escape...count for the worst ..
These walls are an eyesore and not eco friendly at all.
Wow wonderful subject. Nice presentation. Sir.
a lot of ppl here in Japan say it's better to just live somewhere else rather than building a wall that blocks the beautiful ocean view
Yeah I mean, what's even the point of living by the sea if all it gives you is a massive grey wall? Might as well live somewhere that also doesn't have an ocean view but doesn't have a concrete wall view either.
I've read that some people are against them because they give a false sensation of security. Some people died in 2011 because they trusted in the former walls. The new ones could increase that feeling of safeness
*false safeness
@@bih1773 yeah that's very true, and with this wall we can't even see how big the tsunami is
it was just a waste of money
I am Japanese.
Most of the countries are no longer restricting food imports due to the Fukushima nuclear accident. Recently, the United States lifted its restrictions.
🤝🤟
These walls are such a eye-saw! Why didn’t they used the 12 billion to relocated lower valley based towns up to higher ground and use the valleys for farming, sport facilities and non home or office use. I feel for the communities that now can’t look out to sea anymore.
Some towns did that, I've visited the area recently and seen documentaries on it.
One town used a giant converor belt system and moved an entire mountain down the valley and raised the town up over 10m before rebuilding houses started
Everything is money.
Even if they build a new home on a hill, they still need the same walls to protect the land and assets of the valley, which is their foundation of life.
Have you ever wondered what happens to fields soaked in seawater, oil and rubble?
It was also feared that depopulation would progress because it would take time and budget to build a hill that requires the consent of the majority of residents.
Finally, many towns in the Tohoku region, with the exception of big cities like Sendai, are rooted in the ria coast like the fjords. A vast setback like a dirt hill behind a wall is not possible.
They are not money machine
It's crazy to think that this wall is not even enough save them in the future as bigger tsunami will eventually happened.
Japan. be like - Let’s build a huge wall to keep the water out, and our people safe.
United States (Trump) be like - Let’s build a wall to keep the immigrants out.
Yeah.... apparently you haven't been reading real news. They are a tsunami, now, thanks to Biden.
Perhaps a valid solution would be to modify every home in the endangered areas with balloons, so that when the next tsunami comes, they can simply take off to safety.
Just stop living by the coast or just be ready to pay a price when nature hits.
Been a long time watcher but subscribed recently and im addicted lol.
One of the other issues not frequently highlighted with the 2011 quake was that parts of Honshu slid eastwards and subsided (lowering the original height of some coastal seawalls). I believe the city of Ishinomaki saw some of the greatest land subsidence where some residential areas remained flooded even at low tide post-2011. Another thing one of the researchers (the one with the glasses who often times is interviewed in documentatires and Japanese broadcasts) at Tohoku Univ found was a previously unknown phenomenon which made the tsunami height greater than expected (something to do with a bubble of water that was caused by the quake which the tsunami itself ended up on top of). Basically, you can only mitigate against nature to a certain extent.
Japan always has something incredible. The more I see, more I learn.
In his Hardcore History podcast series on Japanese culture and it's impact on the 20th Century (Supernova in the East) Dan Carlin says "The Japanese are just like everyone, only moreso" and it really is spot on. Check it out if your interested
Him : walls didn't work
Mexico: hehe
Trump left the chat.
So that's what inspired isqyama I guess 🤔
This channel is marvelous
Love your work... Keep making such interesting videos 💥
Deep rooted trees do a wonderful job on mitigating a tsunamis effects. It´s a great idea.
mangrove trees will play a good role in cutting the force of waves. It might be a good idea to plant trees along coast
i feel like this video isn't comprehensive enough for an engineering/technical channel. The whole tsunami defence isn't just about the concrete walls , it's also about the multi-layers of defences like the highly specialised breakwaters unlike the ones most other countries have, and the way these defences divert water flows, etc etc.
It needs to be longer!
Around Nagoya and Wakayama and Kochi
Can’t they build something on the sea that breaks waves?
3:56 breaking wave won't work . It's like extreme flood.
Dr. David McGovern has a super cool vibe :) He looks and sounds like he would be super fun to talk to over a cup of coffee. Nice video.
Why don't they just build Concrete Houses that are Shaped to let the Tsunami pass around the structure?
The people could take shelter in any of the houses until the wave has gone...Walls are not very inovative when it comes to nature. But a wel designed house or buildings that are high impact protective and safe. And offer a cultural design element to the science. Like Art and Sience as a unity of cultures.
As devastating as the tsunami was, walls dividing towns sounds like a recipe for its own set of cultural disasters.
the walls aren't dividing towns, they're dividing communities from the sea.
One item not mentioned here is that not only was the tsunami taller than the wall, but that the subduction caused by the fault's slippage LOWERED THE WALL ITSELF by about 2 feet.
can mangroves grow there ? they are good protectors.
The next day 20-30 tsunami will destroy this wall like it made of sticks