Cause and Effect Tsunamis

Topics: 2004 Indian Ocean earthquake, Tsunami, Ocean Pages: 4 (1446 words) Published: November 11, 2008
What exactly are tsunamis? Tsunamis are immensely strong, long length and long period sea waves. Tsunamis have caused much grief and sorrow for anyone who have experienced it. The term tsunami comes from the Japanese language meaning harbor and wave. The term was created by fishermen who returned to port to find the area surrounding their harbor devastated, although they had not been aware of any wave in the open water. Tsunamis are common throughout Japanese history, as 195 events in Japan have been recorded. The strength of a tsunami is absolutely frightening; a tsunami can completely destroy a city within minutes. The Indian Ocean Tsunami in 2004 was one of the deadliest tsunamis ever recorded and destroyed many cities. Tsunamis are behaves differently in shallow and deep water. In deep ocean water, tsunami waves form only small humps and are barely noticeable and harmless. In shallow water a tsunami slows down to ten miles per hour but in doing so, it forms large destructive waves. Tsunamis can occur in a number of different ways and the after-effects is can also vary. The more devastating effects is land destruction and the negative impact to people’s lives. Tsunamis are forces of nature that cause death and destruction in many areas in the world. There are many different ways that tsunamis can form. One of them is by underwater earthquakes and underwater landslides. There are two kinds of underwater earthquakes, tectonic and subduction. When tectonic earthquakes occur, the seafloor becomes deformed, forcing displacement of water thus causing tsunamis. The other earthquake, subduction earthquakes act very differently. Tectonic plates slip under each other, creating a massive disturbance in the water and the land under it and also forces displacement of water. Another way, which tsunamis can occur, is an underwater landslide. Sometimes rocks, sediments and other debris falls all at once causing a huge disturbance and causing tsunamis. Under water explosives,...
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