What Is A Tsunami?

Tools

By By Steve Pool

SEATTLE - A tsunami is a large wave that can come ashore at heights of over 100 feet tall. It is one of the most devastating natural disasters that Mother Nature can unleash.

A tsunami is frequently, yet mistakenly, referred to as a "tidal wave". But tides have nothing to do with tsunamis. It's created when something displaces a large column of water.

The most frequent causes of tsunamis are earthquakes that occur in the oceans. The rise and fall of the ocean seafloor during quakes can displace a large amount of water, causing a tsunami. But large objects, such as a huge meteorite, can also cause tsunamis.

They're hard to spot at sea, because in the middle of the ocean, where water depths are hundreds of feet, the sea level might rise only a couple of inches, but when the wave reaches shallow shores, it can reach over 100 feet high.

For More Information:

www.pdc.org

www.science.org

Your Photos

YouNews Snow geese are back!!! Snow geese are back!!!
Going to Laconnor for lunch guess what we saw!!! It was fantastic! From Grace LaFountain- Oak Harbor, Wa.
YouNews the Baldwin kids the Baldwin kids
A photo session with the Baldwin kids in front of our graffiti wall at our home in Bothell; Briana 14 yrs and Cole and Kayla 12 yrs