Tsunami Flashcards
1
Q
Definition
A
Large wave that is caused by an under sea earthquake that displaces the water above it
2
Q
Wave height
A
SHort (5-10m)
3
Q
Wave length
A
really long 2000m
4
Q
Speed
A
up to 500mph. reduces to 50.60mph when it reaches the shore
5
Q
More powerful if…
A
It starts closer the the coast (less energy lost)
6
Q
How are they formed at an oceanic subduction zone?
A
Where oceanic subducts under the continental causing vertical water displacement
7
Q
how are they formed at destructive plate margins
A
a sudden slippage the upper plate rebounds upwards. Displacement causes a rising column of water
