Tag Archives: earthquake

tsunami7

Tsunamis: Killer Waves

 

Tsunamis: Killer Waves

[Excerpted from National Geographic  online.]tsunami1

The Indian Ocean tsunami generated by the most powerful earthquake in decades [occurred] on December 26[. It] is believed to have killed more than 150,000 people and made millions homeless, making it perhaps the most destructive tsunami in history.

The epicenter of the 9.0 magnitude quake was under the Indian Ocean near the … Indonesian island of Sumatra…. Within hours killer waves … slammed into [coastlines] …snatching people out to sea, drowning others in their homes or on beaches, and demolishing property from Africa to Thailand. …

What Causes A Tsunami?

• A tsunami is a … great sea wave…caused by an underwater earthquake, landslide, or volcanic eruption. More rarely, a tsunami can be generated by a giant meteor impact with the ocean. Scientists have found traces of an asteroid-collision [3.5 billion years ago] that they say would have created a giant tsunami that swept around the Earth several times [and covered] everything except the mountains …

Continue reading