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I am a novice on this topic. However, I wonder if we use nuclear bombs against the tsunami, will it reduce the speed and impact of the tsunami. Is it possible to break the massive wall of waves using nuclear bombs? In other words, is it possible to create another opposite force which can neutralise/reduce the energy carried by Tsunami by creating an induced wave.

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marked as duplicate by Kyle Kanos, Brandon Enright, David Z Mar 29 at 3:24

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

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possible duplicate of Tsunami dampening mechanisms –  Kyle Kanos Mar 28 at 13:37
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This particular idea, IMO, is a terrible one because (a) you're introducing huge amounts of bad radiation and (b) the nuclear blast will generate a wave of water headed towards the shoreline you are trying to protect. –  Kyle Kanos Mar 28 at 13:51
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@Hunter, you cannot oppose one wave with another wave. They pass through each other. Have you ever seen a demonstration of 2 points generating waves. There are always circular waves coming out from either point. If the waves interacted, the pattern would be different. –  LDC3 Mar 28 at 13:53
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@Arafat Honestly? No part of this idea is practical so the timing is kind of the least of our concerns about practicality. Conceptually, yes it is possible to have two waves that cancel each other out. –  tpg2114 Mar 28 at 14:13
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People tend to massively overestimate the energy output of nuclear weapons. What makes nuclear weapons work as weapons is that they concentrate a large amount of energy in an extremely small area. Natural phenomena like tsunamis and hurricanes have a small amount of energy per unit area but enormous area. The total energy content of a tsunami or hurricane is truly immense. You might as well be trying to stop a wave by throwing sand at it. –  Eric Lippert Mar 28 at 17:44

3 Answers 3

Not likely. The wind can not transfer enough energy directly into building a wave big enough to cancel a tsunami. The detention would need to be underwater and create a displacement which would build a large wave, however this would be almost impossible to control to the precision required to cancel in incoming wave whose energy is usually only determined once it hits shore.

In addition there has been a detailed study that show explosion generated waves could not build a structured tsunami wave. The wave resulting from an explosion (both shallow and deep water) would be similar to storm surge and just cause flooding.

Naturally people have thought of this before and have even tried to make it a weapon. Tsunami Bomb:

The tests revealed that a single explosion would not produce a tsunami, but concluded that a line of 2,000,000 kg (4,400,000 lb) of explosives about 8 km (5.0 mi) off the coast could create a destructive wave.

The odds are far more likely you would create many more problems with the explosions than actually reducing the tsunami wave.

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Also, the nuclear bombs would create a lot of radioactive waste, and the tsunami would create a highly effective way to disperse that waste. Even if it would reduce the wind speeds, we probably don't want radioactive byproducts spread all over the place.

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It's not likely to effect the tsunami very much.

On the open ocean (where you would want to use the bombs), the wave height is not very much, so the air blast from the bombs would blow over the wave. The bombs would also create their own waves which would pass through the tsunami wave.

Near to shore, the tsunami wave would increase in height. The bombs would have a greater effect, but would destroy what you are trying to protect. (ooops)

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