Inside Japan’s Earthquake Simulator
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- Опубликовано: 18 дек 2023
- This is the world’s largest earthquake simulator, here’s how it works. For a free trial to Shopify go to www.shopify.com/veritasium.
If you’re looking for a molecular modeling kit, head to ve42.co/SnatomsV to try Snatoms - a kit I invented where the atoms snap together magnetically.
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A massive thank you to everyone at NIED for allowing access to their facility. Massive thanks to Okouchi-san for arranging this shoot.
A huge thank you to Dr. Yohsuke Kawamata for the tour of E-defense and for sharing his deep expertise.
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References:
Nakashima, M., et al. (2018). Experiences, accomplishments, lessons, and challenges of E‐defense. Tests using world's largest shaking table. Japan Architectural Review, 1(1), 4-17. - ve42.co/Nakashima
Suganuma, K. (2005). 3-D Full-Scale Earthquake Testing Facility (E-Defense). NISTEP Science & Technology Foresight Center. - ve42.co/Suganuma
Ohtani, K., et al. (2004). Construction of E-Defense (3-D full-scale earthquake testing facility). In Thirteenth World Conference on Earthquake Engineering (Vol. 189). - ve42.co/Ohtani
Horiuchi, T., et al. (2022). Contributions of E-Defense Shaking Table to Earthquake Engineering and its Future. Journal of Disaster Research, 17(6), 985-999. - ve42.co/Horiuchi
Nakamura, I., et al. (2008). E-Defense experiments on full-scale wooden houses. In Proceedings of the 14th World conference on earthquake engineering, Beijing, China (pp. 12-17). - ve42.co/Nakamura
Japan: The Next Big Quake. Financial Times. - ve42.co/BigQuake
Images & Video:
Kobe earthquake compilation - ve42.co/Kobe
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Special thanks to our Patreon supporters:
carrotcypher, Chris Harper, Max Paladino, Balkrishna Heroor, Adam Foreman, Orlando Bassotto, Tj Steyn, meg noah, KeyWestr, TTST, John H. Austin, Jr., john kiehl, Anton Ragin, Diffbot, Gnare, Dave Kircher, Burt Humburg, Blake Byers, Evgeny Skvortsov, Meekay, Bill Linder, Paul Peijzel, Josh Hibschman, Juan Benet, David Johnston, Ubiquity Ventures, Richard Sundvall, Lee Redden, Stephen Wilcox, Marinus Kuivenhoven, Michael Krugman, Sam Lutfi.
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Directed by Will Wood and Petr Lebedev
Written by Will Wood, Petr Lebedev and Derek Muller
Edited by Jack Saxon and Trenton Oliver
Animated by Fabio Albertelli, Ivy Tello, Leigh Williamson, David Szakaly
Filmed by Petr Lebedev, Lui Kimishima and Derek Muller
Produced by Will Wood, Petr Lebedev, Han Evans and Derek Muller
Thumbnail by Ren Hurley
Additional video/photos supplied by Getty Images and NIED (E-defense)
Music from Epidemic Sound
The timing of this video is crazy. My thoughts to the people affected by the new years 7.5 earthquake.
Was gonna say the same 🙏
I returned here right now to tell the same because of the news.
Unless of course Veritasium is behind the quake...
@@mattblack6736 top 10 anime plot twists
It was nuts! Was nearby in north Shiga prefecture at a temple and the temple buildings started wobbling.
It’s snowing now, so things are still pretty rough for Ishikawa prefecture.
Imagine telling someone about an earthquake you survived and they were like "It couldn't have been that bad i mean it wasn't a MAJOR earthquake"
"I got shot..."
"Well the bullet wasn't THAT big so it must not have been that bad!"
@@randomfish9910Only 9mm? Pfff, that's nothing!
@@DontReadMyProfilePicture.273 K i wont
According to the USGS website, Magnitude is consiered outdated. And now we see why! Modified Mercalli Intensity (ground movements) is more revealing, and I have no doubt that Kobe 95 was XXII, the top of the Intensity scale.
specially if it's from your own countrymen used to massive earthquakes, like in Chile or Japan
This was timely.
very
After "13" days
its crazy
Or in another sense, untimely
Wait can anyone explain what he means by that
After watching this video, some people may wonder why buildings collapsed due to the recent 1/1 earthquake. The epicenter of the earthquake was in the countryside, an area with many traditional houses and buildings that were built before the current seismic standards were set.
That’s not true at all, the epicenter of this most recent earthquake (yesterday?) was off the coast.
Which is weird, given how the 2007 Noto earthquake also hit the area and caused far fewer damages.
Only now has the damage become that bad.
@@ianhomerpura8937That's what the white noise test was for. A house may seem fine on the outside, but would have invisible fractures or internal problems that would have made them more likely to crumble when this 2024 series of earthquakes came.
Props to all the engineers and architects and workers who built such a cool place. That amount of knowledge in that building is awesome.
"What do you do?"
"Oh, I just make earthquakes."
❤❤❤
This is what happens when the government is truly for the people and by the people
Veritasium inspires me, my parents said if I get 30k followrs They'd buy me a better camera for recording.. begging u guys,, literally
Yeah, props to them for working so hard, only for constructor works to be greedy and cut corners to save some money.
They risk the lives of people for some damn money!
They can replay any earthquake?! That’s pretty incredible. What an amazing experiment.
They can't replay ANY earthquake. For instance, Beyonce's drop of Lemonade is not reproducible. 😆
How do they know what the world's most destructive earthquake is? Couldn't a bigger one always happen?
@@garrysekelli6776 then that would become the most powerfull
@@garrysekelli6776By recording the richter scale when your mom shifts.
@@garrysekelli6776most destructive ever recorded
A few errors:
- confusion between seismograph (the instrument) and seismogram (the recording)
- on the magnitude scale, it's not an increase of 1 that represents 10x of the energy of the earthquake. It's actually an increase of 2 on the scale that represents an increase of 1000x of the energy (so an increase of 1 is ~30x)
I thought something was off on those statements.
not bad for a free youtube video
You'd think Derek and his team would get this right when they've probably spent hours and hours researching this. A bit disappointing...
Derek is human.
And don’t get me started on how they are misusing the word “epicentre”!
Jan 1 2024 a 7.6 (on the Japanese seismic intensity scale) earthquake hits Noto Peninsula of Ishikawa.
Just 150 KM from where it was predicted by semiologists, and reported by the Veritasium team in this video, uploaded 13 days ago.
Mind blowing how accurate this was.
So far only 1 reported fatality (due to building collapse)
Sad to see the numbers will increase as many buildings did not have the necessary modifications, but incredible to see the accuracy and relevance of the video.
As of Jan 3rd there are 14 reported fatalities
@@spik330 As of Jan 4th 92 dead and 242 missing
As of Jan, 6th. 126 people have lost their lives.
7.6 is the value in Magnitude, not on the Japanese Seismic Intensity Scale
Time and time again human technology amazes me. The fact that people can simulate an earthquake on a 10 story building at that. Feels like science fiction
In reality this will still fail. Randomness is essence of nature. This models are not based on it. Also resistant not proof words can hide meaning.
This is a good policy that prioritizes science to achieve social goals. Well, in Japan, houses are not cheap, but they have a rigorous construction safety system based on scientific regulations, which is a good policy.
@@jikkkjvghjof course it would fail but it's better than nothing for sure
Veritasium inspires me, my parents said if I get 30k followrs They'd buy me a better camera for recording.. begging u guys,, literally
@@jikkkjvghj Yes, it will, 0.3% of the time instead of 8.x% of the time, didn't you watch the video?
The pure scale of everything from the engines to the hydraulics is blowing my mind. Looks like the sort of thing you'd see in a steampunk game.
Those hydro actuators were ENORMOUS!! Thats so much power. Think of the size of the actuators you see on excavators and other heavy equipment and how powerful they are. And these are almost a meter in diameter!
@@banalucki what are you talking about?
The power of Japanese engineering is no joke. In 2011, my father, sister, grandparents, and I lived on the 9th floor of a Japanese apartment building. From our location, the shock was approximately equivalent to a 6.1 magnitude earthquake. Despite this, only one item broke in our house, some unimportant, glass object. No one from our floor was hurt, none of our standing cabinets or dressers had fallen over, and everything that had fallen was easily repositioned. That was the only earthquake that made me feel scared while I lived there. I’m truly grateful for the work these people do to mitigate future disasters.
I was on the 5th floor of Ebisu Garden Place tower, and was at work. We were used to earthquakes, so initially I carried on working. My concentration started to go after my computer keyboard was moving so much that I was putting the wrong letters in my teams instant messenger... After that, I was looking around, and started to see the false ceiling collapse, and remembered I was near the bottom of a large tower block. Having visions of the NY twin towers going down, I clambered under my desk as we had been trained, and opened my emergency bag which all the desks had, and put on my helmet (backwards I later realised!) after about 3 minutes of violent shaking (very long compared to most) we were evacuated downstairs, and went home, since it was Friday afternoon anyway, and walked for about 3 hours to check on loved ones and join the columns of office refugees. I don't remember any buildings collapse, but there was lots of superficial damage, and it took a few days for the trains to get working again. At least it got me back cycling!
when was the apartment constructed?
@@davidbeales7390 yep, those three minutes of anticipation were terrible. My father was at work at the time, so my sister, grandparents, and I huddled under a secure doorframe. When the mainshock finished, my grandparents decided that my grandfather would escort my sister and I down the stairs and come back for my handicapped grandmother. Thankfully, as soon as we hit the stairs, we met the family downstairs whom we were friends with. They were heading upstairs to check on us, and my grandfather led the dad to my grandmother so they could lift her down; meanwhile the mom and son escorted my sister and I to the evacuation area. My father’s never shared his full story of the event with us, but I’m sure his is similar to yours.
@@Dalet_ looks like my original reply to you got deleted for including a link.
According to the article “Yokota History Article Part 7: The 1980s to the Present”, my apartment building was one of six built in the 1990s. However, I can attest that there were six other identical apartment buildings built during the 1970s and their damage was still minimal.
Japanese engineering is brilliant
The timing of this video is uncanny
The timing is UNCANTTYYY boo 💅
I worked for 41 years at a testing lab. We owned and operated two earthquake simulators. One with a 10 x 10 foot table and one with a 20 x 20 foot table. The heaviest specimen I ever remembered testing was a 12 cylinder diesel generator, use for emergency power for hospitals in earthquake zones. The generator weighted 65,000 pounds. I've got to witness hundreds of earthquake tests through the years. I'm now retired but was very lucky to have had such a enjoyable and rewarding career.
Thats cool, I never thought of testing generators and stuff but yea obviously they need to be vetted as well!
I need you as my grandpa so I can hear more cool stories like this❤
you need to get back in there and investigate what happened to "best practices" - the way people doing the job do it together....
@@banalucki again, what are you on about?
I myself am a survivor of the Kobe earthquake. It was such a traumatic experience for me, even today, a minute earthquake gives me a chill. It is good to see these advances in technology so that we don't have to go through I had to go through back in the day.
Its crazy how this video was made 2 weeks prior to a deadly earthquake in Japan.
Yet seismologists couldn't predict it... 16:30
@@stevethea5250 Uhm, they litterally said in the video that there would be one in the next 30 years, so that has turned out true.
@@beetlesstrengthandpower1890 time
This video was uploaded in the third week of December 2023. Less than two weeks later, a magnitude 7.6 earthquake struck Japan on January 1, 2024.
And those seismologists couldn't predict it..
Its crazy that the exact same building that I live has been tested like this. And they showed us the video before we buy it. Kinda scary to imagine being shacked in the building I live rn
@DontReadMyProfilePicture.273
You are very creative.. Well obviously Im not a following your instructions, you earn my subs..
That would feel so weird to think that your whole building that you sleep every night got put on the "machine" haha
Veritasium inspires me, my parents said if I get 30k followrs They'd buy me a better camera for recording.. begging u guys,, literally
@@MbitaChizi O subbed, get a new camera
@@MbitaChiziget a job and buy your own camera loser.
The Japanese government's response to earthquakes is the very definition of civilization. They recognize a public danger and work diligently to minimize the danger to the population. This is why we work together. This is why we pay taxes. To make the world better for all.
would not say their direct respons was the best and don't understand what you get that from? Their respons was very weak, slow and coordination was awful, bunch of idiots. Sure they have set this up now to prevent the worst in the future but that is what you excpect form every functioning country.
@@douglaspettersson2624bit pessimistic but that's how technology and development works. Takes forever for good things to catch on. Reminds me of the guy who figured out using soap in a hospital reduces the deaths of newborns and infections in general. He knew it worked but couldn't explain How thus no one believed him. He eventually went crazy thinking about all the patients he could have saved. Eventually everyone else did catch on but still.
Yes and no. They didn't act on the information that a ~10m tsunami could knock out the cooling system of certain Tohoku nuclear plants. This was known before it actually happened in 2011. As usual, it's a mixed bag of successes and failures. That said, this simulator facility is very impressive.
You're 100% correct. They made plenty of mistakes along the way, but at least they genuinely invest in the problems confronting their society, while seeking genuine solutions.
Meanwhile our country can't even bring itself to collect data about problems much less solve them. We're a pathetic shell of a great nation these days. Nothing but guns and bombs and trans fats.
@@tvuser9529somewhat boiled down to the professional integrity of the engineers in charge of design. The plants that failed, the civil engineer caved to cost reduction demands from higher-ups. There was another station that got higher waves, but remained safe and was soon back in operation, because the engineer in charge of building design didn't cave and basically said "that's the data, and according to it, that's the worst case realistic tsunami that can hit it, so it should be designed to take it". Of course, that engineer was an old guy, and had the clout that comes with being an old guy in East-Asian cultures... A younger dude would have simply been replaced.
Please don't ever release a "nuclear simulator" or anything like that...
😂
💀💀 bruh that would surely "educate" a lot of people
I love the quickness and implied obviousness of his response to "how do you predict the earthquakes" with "ask the seismologists", because even though he is an expert in simulating and testing earthquakes, studying *how* they happen is an entirely different area of professional experience. That's a sure sign that someone is truly intelligent, no speculation, no half-assed answer based on something he sort of knows about, just "ask the experts of course!"
16:10
"Eh, that's not my department."
The earthquake simulator is so massive my mind is have such a hard time figuring out the scale. Like I know that those are full sized houses and full sized 10 story building but my brain is saying "no those are small scale models." That's so wild how we as humans can create something so impressive blows my mind.
That seems to be mirrored by a lot of the creators who have done content with those types of apparatus; it's a whole different experience actually being there and seeing something that massive move that fast.
Yeah, and must be expensive as hell, they spent billions of dollar to build this.
The immense dedication to safety and preparedness is so essential, especially in places prone to seismic activity like Japan. It's remarkable to see how the continuous research and progress at facilities like E-Defense contribute to saving lives.
You using like bots?
Came here after Japan Earthquake yesterday,
That shows us again the importance of this kind of investment & implementation in housing. Interestingly very few houses got destroyed in yesterday's earthquake, that shows Japan is successful in implementing the technology.
Yet they still failed to warn their citizens?
@@stevethea5250
How do you predict an Earthquake?
A 7.6 earthquake has struck Japan... Tsunami warnings have been issued throughout..just 12 days after this video has been released..what a scary coincidence🤯😰
I live in the Netherlands, where we have earthquakes due to gas extraction.
So my demolished and rebuilt house (along with all other houses in our street) has been placed on base isolation friction sliders.
Before we even moved back to the newly built house, there was a quake again and the manufacturer of the friction pendulum sliders has visited again to inspect the sliders.
The house (or actually the ground) had moved +/- 2 cm (in X/Y plane) which they could see in the displaced grease in the sliders.
The sliders are large enough to allow upto 125 mm displacement from the center in the ground-plane.
We have a gap surrounding the house to allow for the displacement, which is covered with some plate and gravel.
Here we don't have such 'impressive' magnitudes as the strongest one so far was "only 3.6" on the Richter scale.
However quakes elsewhere are several 10s of km down, where we have them near the surface.
This makes the quake-movement quite different from what you see in these simulations.
So the minimal perceptable magnitude as mentioned in the video does NOT apply to the quakes here as you can feel quakes starting at 1.5 on the Richter scale here because of the epicenter of the quakes here is very close to the surface.
Also we have 1km of salt and lots of clay on top acting as a rubber surface.
Only a few-1000 houses have to be rebuilt/reinforced to make it all safe again.
Very interesting, thanks for sharing!
One reason that the houses in the Netherlands are experiencing the "small" earthquakes as "big" earthquakes is because there not built to withstand earthquakes. Even the case mentioned above with the isolation sliders, it is just a workaround and not the same principal as the houses in Italy, Greece, Turkiye, etc. (the houses that really follow the regulations 😅).
I have experienced many earthquakes in Greece with the biggest been 5.9 on the scale and with duration about 15 seconds while 3.5 seconds after the first earthquake a second earthquake started 5.5 on the scale. If this have happened to Groningen there will be no Groningen now.
To conclude, you experience the earthquakes so strong because the houses are not build for earthquakes and they are not build for earthquakes because there were no earthquakes before the gas extraction.
@@TheStamatix It is for sure not just about the buildings not being designed to withstand quakes.
The difference with quakes here compared to quakes elsewhere is mainly due to the lack of depth.
The Richter scale is more or less about the amount of energy being released.
But with deep quakes the propagation is a sphere. Thus the attenuation is to the power of 3 per distance.
With quakes here at the surface (at 3km depth), the propagation is more like a surface ripple.
More like what you see when you throw a stone in a pond.
The attenuation is to the power of 2 per distance.
Also we have hardly any buildings here, so you get the full amount of energy left to deal with.
The house is lifted up like a boat on waves on the water.
Depending on the size of the building, it may be floating freely at one end or both while the wave passes and thus your house simply breaks.
The peak ground acceleration (PGA) here was for some quakes even more than the lowest PGA mentioned in the table on Wikipedia for the top-10 quakes on the Richter scale ever recorded.
So IMHO you shouldn't only use the Richter scale when comparing quakes, but also look at the PGA as that's what causes damages to your houses.
Purely based on the table on Wikipedia about what value on the Richter scale can be felt, I think you should add roughly 1.5 .. 2 to the reported values of the quakes here in Groningen to compare them with other quakes.
But as I mentioned, there is way more to quakes than just the amount of energy released.
Also the direction from where the wave hits your house is very important.
Here in the Netherlands the houses are all built mostly like the outer hull of a match box (when you slide out the 'drawer' with matches)
The front and the back of the house are not really adding to the strength and stiffness of the building.
So if your house is hit from front to back by such a wave of the ground then you only will end up with cracks in the walls, but your house will likely not collapse.
However if such a wave hits your house from the side, then you will be in big trouble as the floors (30 cm concrete) will collapse.
Some reenforcements of the houses here are just done by adding a steel frame with a steel cross in the front and back of the house and then add new walls and some steel construction around the stair cases. Sometimes also the foundation has to be made wider or else the house may 'fall off' the foundation.
When the costs for reenforcing the house will exceed 150% of the costs to demolish and rebuild, then as owner of the house you may opt for demolition and rebuilding.
And just if you think it would be nice to get a free new house.....
Our 'project' took about 10 years of which we've spent 28 months in those temporary houses.
At this moment our small village of 4000 people has 80 - 90 of such temporary houses for people to live in during the reenforcement project.
Just to be complete with this.... You know what the definition is for an "earth quake proof building" ?
A building meets these requirements when you have at least 20 minutes to leave your house alive and no less than 1-in-100'000 people die per year.
Just looking at the predictions on earth quakes you always will see some repeat period being mentioned.
Like "X on the Richter scale will only happen once in 300 years" or something like that.
The same for storms which may cause floods (remember, a huge part of the Netherlands is below sea level, so floods are kinda important here) or when designing a nuclear power plant etc.
All of these are expressed in some kind of event they can withstand including a repeat period or chance it may happen in the next x months or years.
So let's assume about 100'000 people live in the area with quakes and the building code demands the houses must withstand some quake which will only happen every 300 years.
Then you can also read it like "if a quake of such-and-such strength will happen, they estimate about 300 people may die.
Are house & lots getting expensive there? heard it's a popular spot for doomsday bunkers
@@MangaGamify not really. do to the earthquakes only there and in the south of Limburg (mines).
If you want bunkers just go to any Dutch coastal town. I know of a friend of mine she has a old ww2 bunker in her garden. works great as a wine cellar. but foor doomsday reasons? the biggest disaster we can have is dike breach when a major storm is going. for that you need elevation not a bunker.
people that put their time effort and money into protecting other people like these are heroes. bless them.
yesterday, on friday 22nd, 2024, an earthquake hit near jakarta in the ocean near indonesia during 15:53 PM WIB. it had a magnitude of 6.5.
i live in kalimantan selatan and i felt that earthquake (since it's farther away, it's way less powerful) roughly at the same time. i was just minding my own business on the laptop, and i thought i was sleep deprived because i felt like swinging around. that is until when my big bro that laying down beside me said "is this an earthquake" and my heart just immediately dropped because i saw how terrifying they are from this video. me and my bro ran out the front of the house and a few seconds later, it luckily stopped. im so thankful nothing bad happened. everyone of my neighbour went out too that was crazy man...
oh i forgot how time worked i should've not put PM there oops...
The timing of this video is eerie.
I like how Veritasium uploads whenever he wants. Maybe a video for the month, maybe a video every 2 weeks. Always a treat
Or maybe 2 videos in 4 days
Quality over punctuality.
Wow this video's timing is kind of scary
Thumbs UP on E-Defense for solving a remarkable engineering challenge and providing extremely valuable data for earthquake prevention which can be used all over the world.
It's hard to explain how the 8.8 Mww earthquake in Chile felt. The floor was liquid and the noise... The noise was terrifying. Imagine the deepest roar but at the volume of an train.
Can't believe how small the damage to the city was considering the brutality of it, props to the engineers I guess
VIVA CHILE MIERDA, I was really small but I recall the ceiling of my mom's room moving like water
What are the chances that just 2 weeks later, they'll face ACTUAL earthquakes. Prayers for all suffering. Stay strong Japan, you'll get through this and comeback stronger like you always do!
If you look at the graph that lists the top quakes, I was in the Northridge quake in 94. It was absolutely insane to feel the earth move that much underneath me. It was terrifying. The power is indescribable.
What did one tectonic plate say to the other after an earthquake? “It wasn’t my fault!”
I’ll show myself out now…
It's actually techtonic plates hitting each other and saying - wassup baby girl 😏
@@SoloLevellordamn, so your telling me whenever the tectonic plates get it on in the bedroom they end up killing thousands of people?
Getting such a massive structure to accelerate so quickly is such an impressive feat of engineering. Major props to the team there who keep this thing running.
Being prepared and also having redundancy is so huge in many facets of Japanese industries, the west sure could learn a lot.
You nailed it at the end: do not simply wait and hope for the best.
Research, development, and implementation of building codes to ensure the minimum loss of life and keep the integrity of buildings standing.
I always wondered about how did we verify our models of how earthquake-resistant buildings would behave in an earthquake. Apparently the solution is to actually shake them! TIL
Τhe god damn timing of this video is almost immaculate, 12-13 days later, boom earthquake
Having experience my fair share of earthquakes while living in Japan, I appreciate so much there is this effort being made in order to make everyone's life safer!
5:34 got to love the intense music cutting in for 1 second before cutting out again
As a Chilean, this video is fascinating. I love engineering and all of the complex issues that one runs across when building structures that can withstand challenges like these. It always called my attention how, in a lot of the US, you can punch a hole straight into almost any wall. Here, the one to get broken isn’t the wall, but the fist. Although i was very young when it happened, i do remember the 2010 earthquake, the strongest in recent memory. All we had in my home was a broken plate in the kitchen. A lot of people got injured and even died in the incident, but thanks to proyects like this center, we can build homes that minimize the damage. Cheers from Santiago, and thanks for spreading knowledge about these fascinating things.
I don’t think stick frame buildings see nearly the same damage in earthquakes because of the light weight flexible nature of wood.
@@DMSparky Those kind of houses get deformed after a great earthquake.
@@DMSparkyThe problem with traditional Japanese houses is that they do not use any type of reinforcement in joints, whether nails, bolts, etc. They only use assemblies that yield to these forces.
VIVA chile 👍👍👍
Props to Petr for doing a lot of the hosting for this one, great job!
And of course to everyone involved in the E-Defense project. Everybody loves to complain about new codes and having to update things, but to back up all these changes with real-world data and show why it's necessary is an important job. It's excellent to see government (and people in general) coming together to protect each other from natural disasters.
This looks like straight out of a science fiction novel! Just Brilliant piece of engineering and vision on Japan's side
The timing of these video is either a freak coincidence, or Veritasium is an absolute psychic who holds the answers to forever locked mysteries of the Universe - and we can appreciate the superb work of the Japanese architects to design these resolute buildings even in the absolute worst case scenarios, imagine how many countless lives have been saved by this!
amazing coverage, thank you!
The timing of his videos are scary.
I was in Tokyo a few years ago in a hotel when a 7.3 magnitude earthquake struck. The hotel was so well built with dampers etc. that there was no interruption to my breakfast! 👍
thats legit crazy. amazing
Hi Dereck, i have been following your channel for a decade now, i love every video, and every channel u made, i never asked u anything, only gave u likes and views, but now i gotta ask, can u do a video about air pollution maybe? The real reason is, i feel like i can trust you, and i know u will do it justice, and explain it like it is. I think that subject is very important now.
I hope you are doing well, and i wish you all the best
As always, such a fan of this channel and love the depth
Always a good day when there's a new video! Seeing more of the Veritasium crew featured is also a welcome change to the usual video format.
7,6 magnitude earthquake Japan 01/01
I only watched this video the other day. Just came back to say the same. Crazy timing on Ve releasing this video.
Love the work, keep it up!
I was right there in the Takayama District, Toki City of the Gifu prefecture, just a mere 2 hours drive away from the epicenter of the Great Hanshin Earthquake (or The Kobe Earthquake when it was first called back then) when it happened. As someone who grew up and lives in a country without earthquakes, that was truly an experience of a lifetime. I got immediate international calls from my family and friends both in Japan and back in my home country. Every TV channel except for WOWOW was showing nothing but news on the earthquake itself more or less the whole day, and I saw highways and places that I was on and visited just a few days before either lying on their flat side or have their roofs sitting on the ground.
Such simulators have the potential to save a lot of lives.
The crazy thing with feeling an earthquake is that you can't see how much everything is moving because your entire reference frame also moves.
havent thought about that... interesting. it must be more scary and very confusing for the body to stabilize itsself
@@Ni7ram It is. I experienced the 2010 Chile Earthquake (8.8) and even when I have felt many smaller ones though life, that was my first of such a scale I really tough for first time I would die because of one. The building got hit very hard but stayed operational, we lost power for a couple hours, water for a few days, and gas for like a month.
But if the quake is scary and traumatic, it is also the two-three months of aftershocks after that. It took me sometime to readjust, but I think I'm mostly fine now, and mostly came back to the normality when a 6 quake is kinda normal.
@@EduardoEscarez just curious, did you die from the earthquake? just curious
That came sooner than expected
I liked the shots of the earthquake isolation bearings right at the end of the video. Would love to see a video talking about those, plus the other retrofits that they’re working on to make the buildings habitable even after a quake.
Ive watched many of e defense test videos a while ago because i am interested in earthquakes and Im so excited that you make a video on it
This is really interesting! I learned that they can basically replay a real earthquake that happened, that earthquakes move up and down too, and how jerky the movements of an earthquake are!
Petr did a great job on this video, give that man a pay rise! 🙂
I always look forward to your videos! Just so happens there was a small earthquake here a few days ago. Nice timing!
Thanks for another fascinating episode!
Seeing a seismograph and thinking "Huh, that looks like it'd suck." VS plugging that data in and SEEING how bad things were is amazing. The amount of data this could provide is amazing.
This is so cool for so many different reasons. One of them, very critically for me, is to show how terrifying and devastating "middle of the pack" earthquakes can be. In 2008 we had one such earthquake where I grew up, in southwestern Greece in the Peloponnese. It was somewhere in the 6.5-7.0 range (6.7 if I remember correctly) in the Richter scale, but it was absolutely terrifying. The epicenter was very close to us, under land (most of our earthquakes happen under the seafloor), with a shallow focal depth and with a very high seismic acceleration for the magnitude of quake. At this point it was no longer a shake, but rather a shove that we were experiencing. The ground was moving a considerable distance with each thrust, violently, moving furniture around and causing cupboards to open and making it impossible to walk to safety without falling. Sure, the damage it caused wasn't so bad, but that is because buildings in that area are built with very high earthquake resistance and all the old, unreinforced structures have been long lost to earthquakes. That day in 2008 we experienced a very similar situation to Kobe in 1995, and that was the day I learned to fear earthquakes. Up until that point they were more of a nuisance, seeing as they occurred so often.
Thank you for bringing the art of seismic design and structural engineering in front of wider audiences. Really appreciate this. One clarification regarding the magnitude of earthquake, yes, an increase of 1 magnitude leads to 10 fold increase in measured amplitude on the instrument, but the energy released is on the order of 32 times. So magnitude 8 earthquake is 1000 times stronger than a magnitude 6 event. Simply put, for every magnitude increase the scale is 10^1.5.
Secondly US also has shake tables in UC San Diego new structural systems are tested regularly. One important point that you brought about non structural components and equipment, and structural engineers do pay extra attention for bracing those equipment. I will also recommend anyone with heavy bookshelves and other furniture items to always secure them to the walls.
Great video! I recommend you to go to places where video is recording, as you were doing before. We should see your questions, reactions and curiosity. Again, great videos by you.
After a series of moderate earthquakes in Bangladesh recently and the seismologists stating that the country is likely to experience a big earthquake any sooner or later, I have become so conscious that even little tremors continue keeping me on the edge. Nonetheless, it has parked me up to see them researching on earthquake-resistant technologies. Once these building codes are followed in the other vulnerable regions as well, many of us would benefit from them. We are grately indebted to Japan 🙏🏻
Once again, The Veritasium Crew knocks it out of the park with a great video.
This was honestly one of the more interesting videos this channel has done. Very good.
What an amazing piece of engineering this project is, truly amazing.
That timing tho.
The fact that how Japan adapt and give info for the entire world. Veritasum just respect these things GOAT
Amazing technology for creating necessary technology. Thank you for introducing us to it!
Man I love your videos and from a spectator huge thanks to the Japanese for allowing me to see such a cool machine! I can’t even imagine the amount of work that went in to designing that thing
Huge respect to Civil and Mechanical engineers for this experiment.
Probability is amazing
The engineering to design and build this is incredible. Wow...
What a great video. Also what a timing with this video with couple weeks later Japan having a major earthquake
Crazy that this was uploaded just 2 weeks before the 7.5 magnitude earthquake that hit western Japan on New Year's day.
Me, watching this right after the Earthquake in Japan on New Years Day 2024
Me, being here in Japan and then watching this
Timing goes crazy!
I work for a company that makes these seismic systems, and it's mind boggling how much force those actuators can put out. When we run them though durability testing just before shipment to verify that they're not going to break, we can push over 30Gs on a 3000lb mass in a fraction of a second... truly amazing technology.
Not sure if this was the same predicted quake. It looks like the epicenter was a little farther north than shown at 16:41. Would love an update as soon as more info is available!
I wish more countries followed Japans response and be that active about making things better, preparing for the next event and investing such large amounts of money into keeping their people safe. that's what governments are meant to be and its awesome to see what they're doing
New buildings on the west coast of both Canada and the US have seismic systems installed in them. It's what I do for a living.
I'm amazed that such tech actually exists. Brilliant!
Thank you for that!
Dang, i just watched it the other day. And it happened for real in japan soon enough. What a jinx :(
Man this became very relevant very quickly and unexpectedly.
Thanks for use of the SI as metric
such a groundbreaking research
Well this didn't age well...
What odd timing…
The knowledge gained from this research institute is priceless.
I love the slogan in the engineer's clothes at 18:29 "science for resilience". Very general but really really beautiful
Yay! Perfect timing 🎉 always get shook up whenever Veritasium drops a video 😊
he's a shill for the global ruling scum; how much do they pay himt to promote the WEF agendas; does he get his own little fifedom, is that the agreement he was offered? good luck collecting it, karma comes around
It's kind of terrible timing considering the earthquake in China yesterday that 120 people died in lol
Second there!
16:33 The prediction really aged well, if we qualify the 7.4 magnitude we had yesterday.
That‘s totally insane! Great video, love it!
It's good to know that Shopify brought me the portion of the video that is an ad for Shopify. That's really generous of them.
Highest commendations to the researchers! Their passions to not only prevent, but thrive through earthquakes is contagious! Want to go and see this in real life!!
Can I just take a moment to comment on how insanely blue Petr's eyes are? I apologize, I couldn't continue without saying something. Excellent work as always!