What controls the speed of a tidal wave?

Answer 1

Think of it this way, water moves because of the underwater current, and the slow moving tectonic plates. Depending on the strength of a storm, the current can be amplified to a tremendous amount and make the movement of water faster. As is the tectonic plates can send an enormous thrust to make tsunamis travel hundreds of miles.

Answer 2

The speed of a tidal wave is controlled by the depth of the water and gravity. In deeper water, tidal waves tend to move faster than in shallow water. Additionally, the gravitational pull of the moon and sun also play a role in determining the speed of tidal waves.

Answer 3

The wave equation (mathematically-speaking).