Causes of Tsunami

Topics: Tsunami, Volcano, Earthquake Pages: 3 (767 words) Published: November 26, 2012
The Causes of Tsunami
All tsunamis are caused by the sudden displacement of large volumes of water. All are the result of violent events with enough power to displace large volumes very rapidly. Moreover, Tsunamis are often referred to high waves of water caused by changes in the flow and surge of the ocean. On the other hand, Tsunamis can be caused by a few different factors, which are an earthquake, a large-scale undersea landslide, a submarine volcanic eruption (Cause of Tsunami, n.d.).

Firstly, the vast majority of tsunamis results from the earthquake. The earth's surface is covered by the continents and sea floor which are parts of the world-wide system of plates that are in the very slow motion. An earthquake occurs where the edges of plates run into one another, which are called faults or fault lines. The forces along faults sometimes can build-up over long periods of time. Therefore, when rocks finally break, the earthquake happens. For example, some features generated by the forces released along the edges of plates faults are the Andes Mountains in South America, which occurred on land and the Aleutian Trench near Alaska, which occurred under water. When rapid and powerful faulting occurs near the ocean or underneath the ocean, the large earthquake will be generated and possibly being the tsunami (What causes tsunami?, n.d.). The process of a happening of tsunami is complicated. The magnitude and depth of earthquake, the water depth in the region of tsunami generation, the amount of vertical motion of the sea floor, the rapidity of such motion, whether there is coincident subsidence of sediments and the efficiency which the energy is transferred from crust of the earth to water in the ocean are all parts of the generation mechanism of Tsunamis. The energy accumulates in the major plate until it exceeds the frictional forces between the two stuck plates. When this situation happens, the major plate snap back into an unrestrained...
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