The Destructive Power of Waves and Water

What is a tsunami?

Tsunamis are formed as the displaced water mass moves under the influence of gravity and radiates across the ocean like ripples on a pond. The wave travelling through the water stretches from the surface to the ocean floor. The wave is most often caused by earthquakes on the ocean floor. Tsunamis are primarily composed of Longitudinal waves. Longitudinal waves are composed of waves that move parallel to the particles of obstruction. As seen in photo 2 are the effects of these waves moving across the shores of Indonesia. Another name for tsunamis are "seismic sea waves". Refer to photo 3 below for more description. The picture below explains the reason why a Tsunami has more than one strike over the course of the destruction. Longitudinal Wave featured below.

Southeastern Asia

Destruction, Death, and Hope

In 1992 and 1993 over 2,000 people were killed by tsunamis occurring in Nicaragua, Indonesia, and Japan. Due to the location of these three islands on the tectonic plates (photo 1) these Southeastern countries are prone to earthquakes. The most common causes of tsunamis are earthquakes, volcano eruptions, and large meteorite impacts. The tsunami disaster of 2004 prompted a huge worldwide effort to help victims of the tragedy, with hundreds of millions of dollars being raised for disaster relief.

Hawaii, an island southwest of the USA mainland, measures earthquakes and pulses in the earth to get early notifications to the US and other country about the occurring Tsunamis. Hawaii's Islands are a good example of areas located far from most of the sources of tsunamis, where early warning is possible and has saved lives.

What Is A Tsunami?
Massive tsunami hits Indonesia 2012 -.mp4