What is a Tsunami
A tsunami (pronounced ?oo-nahm'ee· is a series of waves generated by an undersea disturbance such as an earthquake. From the area of the disturbance, the waves will travel outward in all directions, much like the ripples caused by throwing a rock into a pond.

What is a tsumani?
A tsunami (pronounced tsoo-nah-mee) is a wave train, or series of waves, generated in a body of water by an impulsive disturbance that vertically displaces the water column.

What does "tsunami" mean?
Tsunami is a Japanese word with the English translation, "harbor wave." Represented by two characters, the top character, "tsu," means harbor, while the bottom character, "nami," means "wave."

How Do Earthquakes Cause Tsunamis
Tsunamis can be generated when the sea floor abruptly deforms and vertically displaces the overlying water.

A Survey of Great Tsunamis
Throughout recorded history tsunamis have occurred that have significantly impacted coastal communities. This section attempts to document some of the more destructive recent tsunamis, with textual descriptions of the events supplemented by images and co mputer-generated simulations

Tsunami Hazard Mitigation
In general, if you think a tsunami may be coming, the ground shakes under your feet or you hear there is a warning, tell your relatives and friends, and move quickly to higher ground.

FEMA: Tsunami Factsheet
A tsunami is a series of waves that may be dangerous and destructive. When you hear a tsunami warning, move at once to higher ground and stay there until local authorities say it is safe to return home.

See Tsumani here