Can Nuclear Explosions Mitigate the Impact of Tsunamis?

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Using nuclear explosions to mitigate tsunami waves, particularly those caused by asteroids or earthquakes, raises significant concerns and challenges. While theoretically, nuclear detonations could dissipate tsunami energy, the effectiveness of such an approach is highly questionable. The potential for constructive interference could actually amplify tsunami waves rather than diminish them. Additionally, the vast scale of tsunami waves, which can extend hundreds of kilometers, would require multiple detonations to have any meaningful impact. Moreover, the environmental consequences of nuclear explosions, including radioactive fallout, would likely result in catastrophic long-term damage to marine and coastal ecosystems, far outweighing any temporary benefits of tsunami mitigation. The legal and ethical implications of using nuclear weapons in this context also pose significant challenges, as the aftermath could lead to extensive liability for damages caused by both the tsunami and the nuclear blasts. Overall, the consensus suggests that the risks and consequences of using nuclear explosions to address tsunamis are far too severe to be considered a viable solution.
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Would it be possible to use nuclear explosions in order to reduce the amplitude of a tsunami wave?

This refers to tsunamis caused both by earthquakes and asteroid impact. Imagine a 100-500 meter asteroid falls into an ocean and produces a tsunami. In this case the tsunami can be anticipated well if the asteroid is seen say 1 day before the impact. Could one use nukes to reduce its effects on coastal regions?

Where would the best hits be applied: directly on the tsunami to locally dissipate its energy, or farther away and then count on wave interference to reduce the main wave?
 
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Gigel said:
Where would the best hits be applied: directly on the tsunami to locally dissipate its energy, or farther away and then count on wave interference to reduce the main wave?
Interference is not always destructive, it is also constructive. If the tsunami waves are combined with a nuclear generated pattern of similar amplitude, then it can be expected that the sum will have twice the amplitude of the original.

By adding fuel to the fire you will be held legally responsible for what would otherwise have been a natural outcome. How can you pay all those claims ?
 
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Baluncore said:
Interference is not always destructive, it is also constructive. If the tsunami waves are combined with a nuclear generated pattern of similar amplitude, then it can be expected that the sum will have twice the amplitude of the original.?

I'm thinking about destructive interference at a certain site - say a given coastline. I don't take into consideration much what happens farther away. This is because the waves will reduce in amplitude the farther they go away anyway.

But I want to see if a given site close to the impact area can be protected; say a place 500-1000 km away from impact point. 5000 km away the waves will be weaker anyway. Of course, what happens farther away must be taken into consideration, but for now let's see if the nuke vs. tsunami idea is feasible at close range.

I did some quick calculations to have a sense of the energy involved. A 100 m asteroid with density around 2 times that of water, traveling at 30 km/s relative to Earth's surface would give an impact energy of about 250 megatons (Mt) TNT. Now I don't know how much of this energy would transfer to the tsunami, but I think it is a small part; most will go away as heat. Anyway, there are nukes of 1 Mt TNT or more. So in principle the tsunami energy can be matched. The main issue is exactly how to do it.
 
Gigel said:
I'm thinking about destructive interference at a certain site - say a given coastline. I don't take into consideration much what happens farther away. This is because the waves will reduce in amplitude the farther they go away anyway.

it doesn't really work that way
the amplitude of the waves are only small in the deep ocean once they reach a continental shelf or coastline they rise up in height again

Gigel said:
Would it be possible to use nuclear explosions in order to reduce the amplitude of a tsunami wave?

I would severely doubt it a tsunami wave can be 100's of km long you would need lots of detonations to stop the waves

Gigel said:
. Could one use nukes to reduce its effects on coastal regions?

you haven't really thought about it have you ?

consider all of it would be pointless anyway ... with all the nuclear blasts the radioactive fallout would destroy the oceans and the coastlines for many many years to come
the overall result would be worse than the tsunami. At least after the tsunami has been and gone the survivors can rebuild and go on living. That is going to be difficult after one of more nuclear blasts contaminate everything for 100's to 1000's of kmsDave
 
Thread closed pending moderation.

Edit: the thread will stay closed. The OP has been answered ("No") and there is not much to add.
 
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