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Tsunami!Tsunami!

What happened &

why???

A PROJECT SUBMITED BY-NANDEESH

LAXETTIX ‘C’

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2004 Indian Ocean 2004 Indian Ocean Earthquake Earthquake

NOAA

•Undersea earthquake

•Magnitude 9.0 (Moment magnitude scale)

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http://en.wikipedia.org/wiki/2004_Indian_Ocean_earthquake

Epicenter 150 KM west of Epicenter 150 KM west of SumatraSumatra

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Occurred along the Occurred along the subduction zone where the subduction zone where the

Indian dives under the Indian dives under the Eurasian PlateEurasian Plate

http://www.nps.gov/prsf/geology/images/plates.gif

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FactsFacts

•The earthquake came just three days after a magnitude 8.1 earthquake in an uninhabited region west of New Zealand

•Possible connection between these two earthquakes

•Possibility of a seismic chain reaction across neighboring plates has also been considered

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FactsFacts

•Total energy released by a magnitude 9.0 earthquake exceeds the total amount of energy consumed in the U.S. in one month

•Massive release of energy and shift in mass insignificantlyinsignificantly altered the Earth's rotation

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A tsunami (pronounced soo-NAA-mee) is a series of

waves (called a "wave train") generated in a body of water by a pulsating or abrupt disturbance that vertically displaces the

water column.

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Tsunami's are also mistakenly referred to as tidal waves as they often resemble a tide

that keeps rising, rather than cresting waves when they

reach shore. However, as they are not actually related to

tides the term may be misleading, and its use is discouraged by scientists.

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Anthony Liekens 15:30, 28 Dec 2004 (UTC)

Tsunamis are created when:

•Seafloor quickly changes shape

•Water is displaced

•Waves are formed as the displaced water mass, which is affected gravity, tries to move back

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CharacteristicsCharacteristics

•Move at high speeds•Can travel enormous distances

with little energy loss•Can cause damage thousands of

miles from its origin •May be several hoursseveral hours between

its creation and its impact on the coast

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Warning SystemsWarning Systems

Many countries around the Pacific, including Hawaii, have warning systems and evacuation procedures in the event of a serious tsunami.

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Effects of TsunamisEffects of Tsunamis

•Destruction of human life (100,000+)

•Destruction of property•Spread of disease•Destruction of ecosystems

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http://msnbc.msn.com/id/6770108/

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http://msnbc.msn.com/id/6770108/

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