Engineer here, a tuned mass damper is a big pendulum (more or less) that matches the natural period of oscillation of the building it's in. It works by being a big heavy thing that doesn't move when the rest of the building does, and then it swings in the opposite phase to the building to dampen the oscillation, basically cancelling it out.
The water in the pool will certainly behave similarly to the tuned mass damper on the first oscillation of the building, but after that it becomes effectively an un-tuned variable-mass slosher. It's un-tuned because nobody designed the pool to match the building, and it's mass is changing because a bunch of water is going over the side. I have no idea what proportion of water is going over the side, but it's likely enough to change how the damping works over time.
Complicating this whole situation is that the water is sloshing back and forth following the initial shaking. It's why the flow off the building is coming off in sheets instead of a steady stream. If it's a big enough pool, you'll be able to feel that throughout the whole building and especially up the top. A building without a damper will sway for quite a long time following an earthquake, and the water sloshing will sometimes be helping that, other times making it so much worse.
Overall, during the initial shaking, I theorise that the pool likely reduced the shaking damage throughout the whole building. However occupants probably all got seasick from the ongoing sloshing extending the length of time the building is shaking.
Ive been in a few, in places that are prone to earthquakes at that. Not enjoying the mental thoughts of what it would have been like to be go from having fun chilling out with friends to being yeeted off the top of a sky scraper in my swim shorts.
I've been in a lot of earthquakes where you just feel like someone slammed into the side of the house. I've also felt an 8+ 170 miles away that was long rolling waves. It depends on how close you are to the epicenter.
To demonstrate fill a milk jug 1/3 full of water. Hold the jug on its side. Slowly move it parallel with the ground. You feel that initial sluggish start? That’s fine but once you immediately change direction you then feel the water hammering against your jug. That’s the no good part. Structure doesn’t like sudden shock wither it from water or quake.
So satisfying when someone shows up and explains something and actually knows what they’re talking about, instead of misremembering some factoid they heard in elementary school, repeating folk pseudoscience, needlessly speculating or copying and pasting AI slop
It has to be designed as a tuned sloshing damper as part of the building and water must stay in the pool. So no, this pool IMO isnt build corectly to counter earthquake.
Yes, iirc some buildings have huge water bassins on the top for this exact purpose. I'm recalling a memorie of an elementary school field trip so I could be a bit off
Burmese guy here currently in Thailand. The people are not ok. It's a nationwide natural disaster most of us have never encountered in our lifetime. The epicenters of the the two consecutive quakes one 7.7 another 6.4 happened within 20km and 10 km underneath my hometown, Sagaing. Hundreds of buildings collapsed as well as bridges, religious buildings (while many people are still inside), historic buildings are either collapsed or heavily damaged. The dead toll is easily in the number of thousands. People are trapped inside the debris while there is little rescue equipment to help them. Internet and phone lines are cut off and I can't make contact with my family there yet even after 10 hr. This is so fucked up man.
Got contact with them and fortunately my family is ok. But a lot of people died in the neighborhood because the buildings collapsed and people are afraid that they're sleeping on the streets now. Small aftershocks are still going on. The whole town is brought to its knees, collapsed buildings blocking the streets, electricity and communication black outs. I wish I was there with my family. It feels so helpless and guilty that I'm in thailand and everyone back home is gojng through so much shit.
I don’t know a specific organization for this event but I volunteered at a school in Myanmar and I am happy to forward their info for you or anyone who wants to donate to that.
Myanmar doesn't have a centralized form of governance or record keeping, it's been fractured up into loose territories run by various rebel groups and other armed factions and has been plagued by extreme corruption, civil war, and various levels of societal breakdown. These groups don't all kindly share information with each other and work toward similar goals like other countries do. It will be very very difficult to piece together the exact impacts.
Yes I spend months there and absolutely loved it. The people are gorgeous, just friendly open and kind. The landscape is stunning. The train system is Butt clinchingly scary however totally worth it! Syria I would love to visit but that one has to wait a while.
Considering they usually have multiple ones a day, your chance of being wrong is pretty low. It's not like you claimed it will be a big one, after all~
Yep there will likely be a couple tiny ones somewhere lol, in the most seismically monitored country in the world, even ones unfelt by humans don't go unrecorded
I had to look this up. Oh boy, is it bullshit! Where to even begin?...
Research conducted by the University of São Paulo revealed unusual brainwave patterns in Jucelino during his prophetic moments. Notably, a frequency of 13.7 Hz was detected, aligning with phenomena observed in quantum mechanics. This led scientists to propose that Jucelino's brain was in a unique state, seemingly receiving signals from the future.
No scientists proposed this! Pure lie!
His website goes on to explain his biggest predictions. It lists three.
He 'predicted' a nuclear disaster - 6 years later, Chernobyl happened.
He 'predicted' 9/11 - in 1989 - 12 years before it happened.
He predicted a Japanese earthquake - 4 years before it happened.
He 'predicted' things that were almost certain to happen in the near-future - and they didn't happen for years.
This guy is not psychic. No one is.
More lies:
Recent studies have indicated that Jucelino's predictions may not merely be coincidences but could be linked to a broader awakening of human consciousness. Researchers have noted an increase in collective intuition and premonitions among people globally, suggesting that humanity may be on the brink of a significant evolutionary leap.
lm not sure what you meant with "link up" but japan is quite far from myanmar. This is more likely due to the plates south of myanmar but havent learn more.
I'm in northern Thailand, about half the distance to the epicenter as Bangkok.
Was just having a big lunch with my family, and I felt it. It was not violent, it was huge amounts of lateral movement. It made everyone extremely dizzy, as we got out of the house and outside to safety.
Aside from the awful building collapse in Bangkok, Thailand is fine it seems.
The epicenter was 17km from Mandalay, Myanmar, a city of 1.5 million people, in a country currently locked in a very serious civil war. I really hope it's not too bad there, but initial reports look quite bad. It is hard to get reliable info, because the govt of Myanmar is terrible.
/r/myanmar/ has some posts up about the earthquake and whats going on
I live in Chiang Mai, Thailand. We don't get a lot of Earthquake's, especially not of this magnitude. Some buildings have sustained structural damage and are being evacuated. Several building projects have collapsed. Many people were terrified. My building was shaking significantly. Our pool overflowed but ultimately we were spared any real damage. My tap water is brown at the moment though. The fault line is in Myanmar. They got the worst of it.
Not sure how. The fault line is in Myanmar, near India. I've seen pictures of bridges collapsed there etc. But yeah the Superlai complex near Central Festival got it bad here: https://www.facebook.com/share/v/162iWxokMm/
The big one in Japan felt big to me 600+ km away. As in whole building swaying and me thinking it was local. And long. When I looked at the earthquake map and saw the epicenter off the coast 1000+km away and then watched refineries burning in Tokyo bay I had a slight “oh shit” moment.
For big enough earthquakes it basically rings the whole planet like a bell and subsequent earthquakes will be set off across the earth not just along the initial fault
The civil war is mostly low intensity ambushes, skirmishing, and airstrikes, rather than pitched battles. Lots of hit and run, rather than sustained firefights between two established lines.
I gotta call home and ask if they felt anything because my family home is even closer, like 90 km from the myanmar border and 400 km away from the epicenter.
Edit: just got done talking to my mom and sister and they also felt nothing. Pretty weird.
I'm no seismologist so take this with a grain if salt, but my understanding of earthquakes is that you can sometimes have one side of the fault remain basically stationary and the other side experience a significant shift as it releases. Strike-shift faults can do this - an example would be the Alpine Fault in the South Island of New Zealand. When the AF goes, it's modelled to be 8m+ (some scary forecasting if you feel like a rabbit hole) and the southern end of the island will be essentially unscathed but the north and east of the fault will be devastated.
I work in emergency management here in NZ and the Alpine Fault will be one of our biggest challenges as a nation when it goes.
To be fair Vietnam is closer to Mandalay than the southernmost part of Myanmar. That said, geology plays a big part on how it's felt, probably more with a shallow quake, from the density of the rock in the east hills of Myanmar to the local soil of each town. Sounds like the waves just travelled better through the mountainous terrain all the way to Vietnam.
Ngl, that looks a little too far for a human water bag to fly off to. As a meat sack I would imagine we fall more like the water does, and that object is something lighter or with a large flat surface area that cause the wing to push it out further.
But then again I am dumb and could just be plain wrong.
I remember asking the same thing when I was a kid when 9/11 happened. My mom told me it was debris but when I got older I realized that yep those were people jumping. Fucking crazy shit man
I live in Nonthaburi. I was asleep when the earthquake hit and woke up from the shaking. It wasn’t that strong but it was noticeable since I got a headache from it. I didn’t realize it was an earthquake until everyone else in the house said they felt it too. This was my first time experiencing one, it’s never happened before.
I like this example, as it's simple and anybody could put it together themselves.
Basically the taller buildings are affected more by lower frequency waves, and shorter buildings more by higher frequency waves. So if it shakes fast, smaller buildings may fall down and the tall ones fine, if it shakes slow, the opposite.
unfortunately I believe a lot of construction workers were inside, I don't think it's know yet exactly how many people died, but there were definitely casualties
I don't know if I'm just seeing things but I think someone was in the water and went off the edge. Watch the top right hand corner of the building with 5 seconds left.
At the start, I thought for a second that someone had been tossed out along with the pool water.
Thankfully, it looks like a large inflatable shark.
(Around 1-2 second mark on the right, falling with the water).
"I just want to go on record as saying that a glass swimming pool on the penthouse balcony is, without a doubt, the absolute worst idea that I have ever heard in my entire goddamn life. But you're the men, so..."
7.8k
u/samhutchie87 7d ago
How big is that pool??