Tsunami - inglês

Centro de Formação Profissional De Tomar
Técnico de Contabilidade e Gestão – Aprendizagem

2010

Mother Nature is a powerful force, it can be beautiful and fascinating and also dreadful and destructive. Natural Disasters are one of the ways Mother Nature uses to make Herself be felt. Well, everybody knows what natural disasters are, everybody knows how to recognize and above all everybody fears them.
That’s why from all the dreadful possible events I chose the Tsunami as the theme for my assignment for the simple reason that it ’s still a fresh and painful portrait for everybody that witnessed it or saw it. I’m speaking of the tragic events of the Tsunami that spread chaos at the Indian Ocean that affected the countries of Sri Lanka, India, Thailand and Maldives on
December 26, 2004.

 Origin of the name
The term tsunami is of Japanese origin, meaning harbor (tsu) and wave (nami), and is the actual term used to describe a wave formed of seismic origin of huge proportions.

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Centro de Formação Profissional De Tomar
Técnico de Contabilidade e Gestão – Aprendizagem

2010

 Causes of the Tsunami
Basically a Tsunami can only be formed in 3 (three) occasions:

A Tsunami can be generated by erupting submarine volcanoes ejecting magma into the ocean. It was an event like this that formed the volcanic island of Krakatoa.

Ocean
Earth Crust
Lithosphere

Most

tsunamis

earthquakes

are

caused

which

by

submarine

dislocate

the

oceanic crust, pushing water upwards. This is the most

common

origin

factor

of

Tsunamis.

the

fault
Ocean
Crust upper mantle

A gas bubble erupting in a deep part of the ocean can trigger a Tsunami when it bursts.
Gas bubbles
Ocean
Crust upper mantle

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Centro de Formação Profissional De Tomar
Técnico de Contabilidade e Gestão – Aprendizagem

2010

As we know, the underwater earthquake was the kind of phenomenon that was in the origin of the giant w ave on the events of December 26,
2004.
The epicenter of this Tsunami which was