Questions tagged [tsunami]

a long-wavelength, high-energy, surface wave on a body of water, usually generated by geological forces. Tsunamis are also called "tidal waves" because their approach causes substantial amounts of water to recede from the shoreline in a manner reminiscent of the tide going out. The inland surge when the wave breaks can be highly destructive.

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19
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4answers
5k views

Will tsunami waves travel forever if there was no land?

If there was no land for tsunami waves to collide with, can the waves travel around the globe for forever?
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1answer
69 views

What does the motion of water in tsunamis look like?

This is what normal wave motion looks like. Do tsunamis that travel at 60mph look any different?
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0answers
41 views

Can you only predict a tsunami 50% of the time on the beach?

I am quite sure my professor claimed, that you can’t always predict a tsunami incoming on the beach by looking at the water pulling into the ocean. She said that’s only possible 50% of the time, ...
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1answer
537 views

Question about the difference between a tsunami caused by a meteorite and one caused by an under water earthquake

Picture the situation where a meteorite falls somewhere on one of our oceans and gives off all its kinetic energy to the water (let's ignore the thermal energies involved like, for example, the heat ...
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1answer
196 views

How to survive a direct hit of a Tsunami?

It's probably a question too general for this forum, but I'm not sure. The other day, I was in the beach, near the sea, and a big wave came towards me. So, instead of running from the wave, I decided ...
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1answer
139 views

Tsunami effects of a nuclear explosion

Sea surface nuclear explosion arouses a tidal wave of water. How does this kind of wave compare to naturally occurring tsunamis? E.g. what would be the potential of a 100KT bomb 100km away the from ...
4
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1answer
510 views

Fluid dynamics tsunami

I have been given a energy head (pressure) in meters for a given tsunami on land. If the tsunami hits a wall 1 meter by 1 meter, is it possible to calculate the height it will reach. I am thinking it ...
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3answers
6k views

Can a mega-tsunami have a height of 30,000 feet or more?

Is it possible on Earth? Roughly what size would an impactor have to be to cause a tsunami of this height? And it's speed, energy equivalent in tons, megatons, etc.?
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1answer
91 views

Tsunami : power of destruction [closed]

I'm not sure this is the good place to ask those questions. Sorry if it isn't. Are there studies that evaluated the resistance of buildings against tsunami ? What kind of buildings could manage a ...
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2answers
4k views

Physics of tsunami: the relationship between wavelength, sea depth and the height of the water

If I understand correctly, when an earthquake occurs, energy will be transferred to the water, resulting in water waves. As the waves reach seashore, because the sea depth is getting shallower and ...
4
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2answers
268 views

How good is current tsunami prediction?

We all know that predicting tsunami and earthquake is difficult, with too many variables involved. But with the advent in data collection and computing power and better models, one should be able to ...
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7answers
40k views

Why do tsunami waves begin with the water flowing away from shore?

A sign of a tsunami is that the water rushes away from the shore, then comes back to higher levels. It seems that waves should be both + and - polarized and that some tsunamis should go in the ...