Tsunamis Flashcards Preview

Geography- Hazards > Tsunamis > Flashcards

Flashcards in Tsunamis Deck (3)
Loading flashcards...

What is a tsunami?

Giant sea waves generated by shallow focus underwater earthquakes, volcanic eruptions, underwater debris slides and landslides into the sea


How is a Tsunami formed?

-upward movement of the seabed by and earthquake displaces a Column of water
-series o waves travel outward at heights of three feat or less
-as the wave approached shallow water it's energy compresses in to a smaller space forcing it to gain height


What are the characteristics of a tsunami wave?

Long wavelength and a low wave height in open ocean
Travel quickly at speed of over 700 km per hour
In shallow Water, there height increases rapidly