Tsunami
Published on Nov 20, 2015
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PRESENTATION OUTLINE
WHAT IS A TSUNAMI?
WAVE TRAIN IN A BODY OF WATER BY AN IMPULSIVE DISTURBANCE THAT VERTICALLY DISPLACES THE WATER .
Photo by c.fuentes2007
CAUSES OF A TSUNAMI
- Earthquakes on the sea Floor
- Underwater landslides
- Volcanic eruptions
Photo by xjbei
TSUNAMIS ARE HARD TO DETECT IN DEEP WATER
AS TSUNAMIS APPROACH THE COAST:
THE WATER BECOMES SHALLOW, THE WAVE LENGTH BECOMES LESS THAN 12 MILES, AND AMPLITUDE GROWS.
FOUR OUT OF EVERY 5 TSUNAMIS THAT HAPPEN OCCUR IN THE RING OF FIRE.
Photo by c.fuentes2007
TWO MECHANISMS OF TSUNAMIS
- A smashing force of a wall of water traveling at a high speed
- A destructive power of a large volume of water draining the land and carrying debris with it
