After the initial wave hits land, a large wall of water follows closely behind it. The water slams into the land, then immediately begins to recede, taking many objects on land with it. More »

Caused by an earthquake on an ocean's bed, a tsunami is one of the deadliest and most destructive natural disasters on Earth. The flooding and associated effects of the tsunami that started in the Indian Ocean in Decembe... More » Science Earth Science Tsunamis

A tsunami's time of danger can last for several hours after the first wave has hit the shore. A tsunami is a series of waves or surges that can hit at intervals of 5 minutes to 1 hour. There is no direct method to predic... More »

Tsunamis are caused by undersea volcanoes or earthquakes that push massive amounts of energy through the water. Earthquakes are the most common cause, but landslides can create tsunamis as well. More »

According to the Centers for Disease Control, the aftereffects for humans of a tsunami include lack of clean drinking water, loss of shelter and injury from remaining debris. Economically, areas affected by tsunamis stru... More »

The formation of a tsunami is a direct result of underwater earthquakes. The energy released during underwater earthquakes is transferred to the water, moving it upward and creating huge waves. More »

No known way to prevent a tsunami from occurring exists. Individuals can take steps to be prepared for a tsunami, and warning systems can help get people out of harm's way if an impending tsunami is predicted. More »