In message , Fleetie
writes
Probably depends on speed at impact since E=0.5mv^2.

We need to know the energy that the quake dumped into the ocean
as the tsunami.


Martin

Howard asked how big a meteorite would be needed to create a tsunami
like the one in Asia (hint: quoting is useful)
I don't know how much energy goes into the wave, but the total energy of
a Richter 9 earthquake is about 10^25 ergs, which is the same as the
kinetic energy of a 250 meter rock moving at 50 km/s. Again, I don't
know how much energy would go into the wave if it hit in deep water.
As you'd expect, there's a lot about this on the Web, and
http://www1.tpgi.com.au/users/tps-seti/spacegd7.html#tsunamiimpact
looks interesting.
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