TSUNAMIDone By

N.K.Rohit Kumar

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WHAT IS A TSUNAMI?

The tsunami is a series of water waves caused by the displacement of a large volume of a body of water, typically an ocean or a large lake . Earthquakes , volcanic eruptions and other underwater explosions (including detonations of underwater.)

HOW ARE TSUNAMIS GENERATED?  How are tsunamis generated Tsunamis can

be generated when the sea floor abruptly deforms and vertically displaces the overlying water. Tectonic earthquakes are a particular kind of earthquake that are associated with the earth's crustal deformation; when these earthquakes occur beneath the sea, the water above the deformed area is displaced from its equilibrium position. Waves are formed as the displaced water mass, which acts under the influence of gravity, attempts to regain its equilibrium. When large areas of the sea floor elevate or subside, a tsunami can be created.

HOW OFTEN DO TSUNAMIS OCCUR?

On the average, there are two tsunamis per year somewhere in the world which cause damage near the source. Approximately every 15 years a destructive, Pacific-wide tsunami occurs. The destructive tsunami on Dec 26th, 2004 on the Indian Coast seems to have occurred for the first time in the history.

 

WHAT TO DO AFTER A TSUNAMI: 

What to do after a tsunami Continue listening to a NOAA Weather Radio, Coast Guard emergency frequency station, or other reliable source for emergency information. The tsunami may have damaged roads, bridges, or other places that may be unsafe. Help injured or trapped persons. Give first aid where appropriate. Call for help. Do not move seriously injured persons unless they are in immediate danger of further injury. Help a neighbour who may require special assistance--infants, elderly people, and people with disabilities. Elderly people and people with disabilities may require additional assistance. People who care for them or who have large families may need additional assistance in emergency situations.

 

TSUNAMIS IN INDIA

Tsunamis in India The first tsunami to struck India was back in December 31, 1881. However, the government of India indicated that around 11,000 people died and more than 5,000 were missing and were assumed dead by the Home Affairs Ministry. An estimation points out that about 380,000 Indians displaced by this tsunami. It is expected that reconstruction of these affected places would cost over 1.2 billion dollars from the World Bank.

GALLERY OF TSUNAMIS

SCHEMATIC DIAGRAM OF TSUNAMI

EFFECTS OF TSUNAMI

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