Is this true? Is there a reliable source for this affirmation? To generate an artificial tsunami you must move a lot of water, that is very heavy an has a lot of viscosity. I think that the direct heat and wind from the blast will cause much more damage than the water waves.
Take this with a grain of salt, but the Russians claim this bomb can generate a tsunami up to 500m (1,650ft) high, reaching over 900 miles inland.
This other link says that a detonation of 30 kilotons in North Korea produced a seismic activity similar to a 3.5 earthquake. http://www.ibtimes.co.uk/north-korea-nuclear-bomb-did-not-tr...
A 100 megatons bomb is only 3333 times more powerful, but the scale is logarithmic, 1 more point is 31.6 more powerful. So 3333 is between 2 and 3 more point in the seismic scale.
My exact calculation is M = 2/3 log(100000/30) + 3.5 = 5.8 < 6.
I don't believe that in can case a very big tsunami.
That's why btw Russia doesn't need those hugely expensive aircraft carriers. They just need to maintain their defensive arsenal, contrary to the USA and NATO which need offensive weapons. The Granit and the Bulava are their strongest weapons.
And according to one popular 9/11 conspiracy theory by Dmitry Khalezov, the Granit was the missile which hit the pentagon on 9/11.
