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Simulation of tsunami from dinosaur-killing asteroid that brought 2.5 mile waves

sos.noaa.gov

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Re: Simulation of tsunami from dinosaur-killing asteroid that brought 2.5 mile waves

#41

Post by jacquesm »

downrightmike wrote: post #22
geuis wrote: post #12

Just to put the numbers in slightly easier to imagine numbers: imagine ocean waves about 13000 feet or 4 kilometers high. No, I can't really imagine it either. In San Francisco, the tallest building is the Salesforce Tower at 1070ft. The biggest wave would be about 13 times taller than that. I totally have trouble visualizing it, other than just looking up and up and up.

The best hope would be that the mountains and ground whittle it down and that it drains quickly. May explain why rodents survived, in that dry to moderately dry ground doesn't soak up water quickly, so if it drained away before the burrows were soaked/drowned, there is a chance at survival.

Likely such a wave would scour the coastline many, many miles inland and the land would essentially have to be re-settled all over again by all of the life forms that thrived there before. There is very little chance that a burrow would not be flooded, but many rodents are good swimmers and there will be lots of stuff floating about.

Re: Simulation of tsunami from dinosaur-killing asteroid that brought 2.5 mile waves

#43

Post by jacquesm »

duxup wrote: post #4

I struggle to imagine the impact of 2+ mile high waves. I’m imagining that much water would scour the land clear pretty severely.

There are a bunch of Coulees in North America, the effect of the water released in a very short time (48 hours) is still visible https://en.wikipedia.org/wiki/Grand_Coulee 18,000 years later. It is one of the most impressive landscapes that I've seen in person (that one, the Grand Canyon and a very large glacier in the North of Canada).

Re: Simulation of tsunami from dinosaur-killing asteroid that brought 2.5 mile waves

#44

Post by jvm___ »

midoridensha wrote: post #33
test7899 wrote: post #17

Are we sure an asteroid killed the dinosaurs? Vulcano erruption leaving the earth in darkness for a prolonged time is another theory.

What ultimately killed the dinosaurs was their own stupidity, greed, and short-sightedness. If they were smart, they would have developed a good space exploration program and technologies to track potentially dangerous asteroids and adjust their orbits before they collide with Earth. They didn't bother to work to protect their only habitat, so it was rendered uninhabitable, killing almost all of them off. Hopefully,…

I mean, we have all those fossil fuels. They must have had them, their names right on them; why didn't they use those?

Re: Simulation of tsunami from dinosaur-killing asteroid that brought 2.5 mile waves

#45

Post by outworlder »

12907835202 wrote: post #30

If this were to happen today now much evidence would be find of our current civilisations? Would archeologists be able to figure out our cities?

Not likely, if we are talking about millions of years.

https://www.cbc.ca/radio/quirks/june-30-2018-a-comet-from-th...

Re: Simulation of tsunami from dinosaur-killing asteroid that brought 2.5 mile waves

#46

Post by echelon »

jacquesm wrote: post #40
fritzo wrote: post #26

> 30,000 times more initial energy than any recorded events As a statistician: this is why heavy-tailed modeling matters. Schools teach the finite-variance version of the Central Limit Theorem and students believe they live in a normal world. The real Central Limit Theorem [1] predicts large rare events following Lévy α-stable distributions. [1] https://en.wikipedia.org/wiki/Stable_distribution#A_generali...

It would save quite a few ocean going ships if this was more appreciated. Those once-in-a-thousand-year-rogue-waves are much more frequent than once in a thousand years. https://www.theguardian.com/science/2006/jul/26/uknews But we're still designing ships as though they only happen once every thousand years because the cargo and the ship are insured and the crews are considered expendable.

> Research at Imperial College, London, shows that far from being rare events, rogue waves can emerge frequently, and may be responsible for some of the 200 supertankers and container ships longer than 200m that have sunk in poor weather conditions in the past two decades.

The loss of ten ships a year seems incredible to me. Surely "weather", if it were to blame, could be avoided.

This amount of loss is steep. Is it being investigated? We should have ocean swell data beamed to satellite from every ship that capsizes.

Re: Simulation of tsunami from dinosaur-killing asteroid that brought 2.5 mile waves

#47

Post by jl6 »

GalenErso wrote: post #11
brink wrote: post #10

I remember those waves on interstellar being a scarier adversary than Pennywise from IT. It must have been quite a sight. I wonder if any of the creatures from the event felt fear before the water washed over them.

I have long said that if I was given the chance to go back in time just once, and come back, I would return 66 million years ago to witness the meteor impact from the safety of a space shuttle. And now I have an idea for Elon Musk: interplanetary disaster tourism. Purposefully crash asteroids on remote areas of Mars and charge for front row seats. This would have the added benefit of bringing valuable metal ores to b…

I think with simulation work like the OP, and Hollywood CGI, we could produce a better virtual view of the event than you could get from any safe distance.

Re: Simulation of tsunami from dinosaur-killing asteroid that brought 2.5 mile waves

#48

Post by bytesandbots »

There needs to be another video from opposite side of the world. And data on how much difference is there in the severity on both sides.

The 2020 paper establishing Chicxulub event as the driving factor of extinction also said that "prolonged eruption of the Deccan traps might have acted as an ameliorating agent" i.e. cancelling the negative effects of asteroid impact.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7382232/

Re: Simulation of tsunami from dinosaur-killing asteroid that brought 2.5 mile waves

#49

Post by herewulf »

zoklet-enjoyer wrote: post #3
jlarocco wrote: post #2

As cool as that is, I'm more interested in seeing how far inland the waves would go.

Same. Shocking to see how the waves wrapped around the peninsula though. But also, was the impact site actually ocean when it was hit, or was it flooded after impact?

It was ocean but it was sort of like hitting a shallow puddle for a 10 km diameter rock.

The article didn't say but I was also curious and looked it up on Wikipedia:

> The water depth at the impact site varied from 100 meters (330 ft) on the western edge of the crater to over 1,200 meters (3,900 ft) on the northeastern edge.

https://en.wikipedia.org/wiki/Chicxulub_crater#Impact_specif...

Re: Simulation of tsunami from dinosaur-killing asteroid that brought 2.5 mile waves

#50

Post by Vespasian »

fishtacos wrote: post #32
pr337h4m wrote: post #15

Earlier quoted context omitted.

These would make amazing VR experiences

My most memorable VR experiences were a jellyfish/turtle scene and a closeup of a whale, among several games and apps I tried with my headset some years ago. Games were fun enough, some good, some not. The visual, non-interactive experience gave me a true sense of awe, as if I were transposed into another reality briefly. Not a big fan of the whole "meta" idea, but executed and refined properly, we'll be in the matri…

"The Blue" was indeed amazing.

Back then, I showed it to visitors at work (besides real projects) and it never failed to impress.

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