explain how seismic sea waves attain such tremendous velocities?

Question

seismic waves attain the tremendous velocities.

Answer 1

The speed is due not only to the energy but to the depth at which the seismic event occurred, which resulted in most of the energy going into very long wavelength waves, which travel much faster than shorter, shallower waves such as those raised by the wind. The seismic wave is comparable to the motion of the normal tidal bulges, which travel around the earth in a day.

Answer 2

seismic waves occur when two continental plates grind up against each other and build up an incredible force on each other. when the pressure becomes too much, the plates slide into a new position very quickly which releases a ton of energy. this is an earthquake on the sea floor. When the sea floor is shifted in it's new position it instantly displaces the water above it in two different directions which causes the sea level to rise and it makes the sea swell. That is the tsunami. Instead of a big title wave hitting land and dissipating back into the sea the whole ocean rises on the coastline and absorbs and devour es the entire coastline. The energy released be the Earthquake is the equivalent to 60 million atomic bombs.