How hard does a tsunami hit shore?

[yjk91]

I was wondering if you could use physics to find the force and magnitude of a wave by using some equations.
speed = frequency x period,if ferq in Hz,period in seconds
I know that this equation would work in finding the speed of a wave, but I'm talking about the speed of tsunami and how hard it will hit when hitting a shore.

There is this german company that tried it and posted bunch of eqations, but i can't read german so i have no clue how they did it. It would be helpful if you can help me one this on.

German website. http://www.noort-innovations.nl/eindverslag%20definitief.pdf
thanks

 

[confinement]

As a first approximation a tsunami can be consider a shallow wave (because the wavelength is much larger than the depth of the ocean) and in this case the velocity is proportional to sqrt(g H) where g is the acceleration due to gravity and h is the height of the wave.

 

[mgb_phys]

But that's not terribly useful, it just says that tsunami speed doesn't depend on water depth - it doesn't help you get a value.
See http://oceanworld.tamu.edu/resources/ocng_textbook/chapter17/chapter17_02.htm