Causes of the tsunami.

There is often no warning to a tsunami. However, earthquakes are often a cause of a tsunami, any earthquake occurring near water may cause a tsunami. About 80% of all tsunamis occur in the Pacific Ocean, but wherever large amounts of water are found. They may be caused by landslides, volcanic explosions, bolides and seismic activity.

http://www.sciencehelpdesk.com/unit/science2/8

heres a video on tsunamis!!

http://video.google.com/videosearch?q=tsnami&emb=0&aq=f#emb=0&aq=f&q=tsunami
this is a video on a tsunami. I put this in here because i felt it captured the power of a tsunami and how unexpected they can be.

Signs of an approaching tsunami

A tsunami cannot be prevented or predicted. Geologists and Oceanographers analyse each earthquake and based upon many factors of the earthquake eg.its strenth may or may not issue a tsunami warning. There are many systems being developed to reduce the damage from a tsunami. One of the most important systems that is used and constantly monitored are bottom pressure sensorshttp://www.seismic.ca.gov/images/tsunamiwave.jpg

How do tsunami's form??

Tsunami's form for a number of things earthquakes , volcanic eruptions , or landslides that all take place under the sea. When these take place under the sea a huge amout of engey is relased. When this happens, huge volumes of ocean water are pushed

upward and a wave is formed.

http://z.about.com/d/urbanlegends/1/0/T/5/tsunami_sm.jpg

http://www.3mfuture.com/images/tsunami_wave_coming_now_too_late.jpg

Tsunami

Here is a blog on tsunami's!