Diapositiva 1

TSUNAMISWORLD DISASTERSCONTENTS

What is a tsunami?.............. 1Notices ............ 2General information.... 3Causes... 4Consequences.. 5How they form?.................. 6Tsunami ............................. 7preparednessHow to identificate 9or predice?Images... 10

WHAT IS A TSUNAMI?

Is a series of waves in a body of water caused by the displacement of a large volume of water, generally in an ocean or a large lakeTsunamis generally consist of a series of waves withperiods ranging from minutes to hours, arriving in a so-called wave train.

NOTICES

Japon build a wall to avoid tsunamis

Asia remember the worst tsunamiIn the history

The 10 catastrophic tsunamis in the human history

Lima made an evacuation planTo avoid a tsunamiPuerto Rico made an evacuation plan

The most destructive tsunami was on december 26 of 2004, it cause the die of many people, materials and objects.This tsunami was in Siria Lanca, Indonesia, India, Malasia, and other 10 countries of Asia and Africa.

General INFORMATION

A tsunami can travel up to 950km/hr . Tsunami wavelengths are extremely long with hundreds of kilometers between the wave crests in the deep ocean.It is not so much big the movement of water but the energy moving through it that makes tsunami so dangerous.

CAUSESImpact of an asteroid or a meteorite in the sea underwater disturbancesA volcanic collapse: can displace a great volume of water and generate extremely destructive tsunami waves in the immediate source area. Landslide: can generate displacement of water to create a tsunami. They are often caused by earthquakes, small, therefore strengthening the force of an earthquake induced tsunami. Earthquake: pushes a large volume of water to the surface, creating big waves. In the deep ocean these waves are small, as they approach the coast these waves get bigger and more dangerous.

CONSEQUENCESDevastation Unimaginable misery.Loss of livelihood for fishermen Damages to coral reefs and flora and fauna

Coastal tree plantations affected.So much seawater coming Salination :increases vulnerability to erosion, the impacts of climate change and food insecurity.

HOW THEY FORM?

VOLCANIC ERUPTIONSEARTHQUAKES

LANDSLIDESASTEROIDSTSUNAMI preparedness STEP 1:You will prepare essential materials You will develop an evacuation planYou will look for information about tsunamisYou will watch notices about tsunamis

STEP 2You will be especially careful after an earthquake.You will look the levels of watersYou will watch changes in animalsA tsunami will occur if you hear government warnings.

STEP 3You are going to run away from the tsunami.You are going to climb to high trees.You are going to go high places.You are going to search islands STEP 4You are going to wait for additional waves.You have to get informationWhen the tsunami passed you are going to search your family and friends.

HOW TO IDENTIFICATE OR PREDICE?FEEL the earth shake: If you are near the ocean and you feel the ground shake, a strong earthquake may have occurred and possibly caused a tsunami. However, you may not feel the earth shake if the earthquake occurred a long way away.SEE the ocean drop: Before a tsunami arrives, the ocean level may (but not always) drop dramatically before returning as a wall of water. If you notice that the water is disappearing, tell your family and friends and prepare to move to higher ground.HEAR an unusual roaring sound: If you hear a loud roaring sound from the ocean (a bit like an airplane or a train), tell your family and friends. This sound may be heard before a tsunami arrives.

Now the scientist have instruments to predice tsunamis9

IMAGES

Be attent, a tsunami can occur at whatever momentWRITTERS AND EDITORS:Mara Fernanda PeaSergio ParraInformation taked from:http://news.nationalgeographic.com/news/2007/04/070402-tsunami.htmlhttp://www.wikihow.com/Survive-a-Tsunamihttp://www.wikihow.com/Survive-a-Tsunami