AQUADESASTER

TSUNAMIS

WHAT IS?

Causes and consecuences

All about tsunamis

Introduction Page 5:what is a

tsunamiPage 7:causes and

consecuencesPage 9:preparedness

Page 11:diferents situations

Extra: the biggest tsunamis

What is?Large wave near the coast by a submarine

earthquake or volcanic eruption,which can

travel at a speed of 50 km/h in either

direction

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Causes:there are different causes of this phenomeno:volvanic,seismological,eartquake

*occur when a large vertical displacement of water,which occurs when the seabed suffer some kind of alteration affecting the vertical column of water above it.this is when the seabed sinks or rises,when the large body of water that is on that part of the bed tries to catch up with the rest waves occur

The energy of the TSUNAMI remains more or less constant during the movement, so that upon reaching shallow zones, having less water than displace, the speed increases so terrific. A TSUNAMI than offshore felt like a big wave can, to reach the coast, destroying even kilometers offshore. Producing turbulence in the seabed carries rocks and sand which causes damage to the beach erosion reaching geography altering for many years.

CONSECUENCES

preparedness-if you hear the tsunami alert you are going to evacuate your house or the place where you are.-you will follow the recomendations of the emergency officials.-if you are in the beach or closer from the sea,and you feel the sand moving you will go inland,backs away from rivers-if you are in the school,you are gong to follow the instructions of the teachers and other functional people from the school-the tall buildings could be safety to stay during the tsunami-

DIFFERENT SITUATIONS-alaska(1958) -lisboa(1755)-krakatoa(1883) -pacific ocean(1946)-valdivia(1960) -nicaragua(1992)-indic ocean(2004) -central and sur chile(2010) -japan(2011) -

Extra!!!The biggest tsunami was the tsunami from japan.there were a lot of dead people and the buildings were destroyed by the tsunami

Written by:camila londoño and sara

martinez