Tsunamis Flashcards
When was the tsunami? (Tsunami tectonics)
26th December 2006
Where was the earthquake felt and what size was it? (Tsunami tectonics)
Sumatra, 8.9-9.3
Where did the earthquake occur? (Tsunami tectonics)
On two destructive plate boundaries - the Burmese plate subducted under the Indian plate
What was the velocity? (Tsunami tectonics)
over 500 km per hour
When the two plates snag, what is this known as? (Tsunami tectonics)
Stick slip motion
What happens when two plates snag? (Tsunami tectonics)
Water columns are displaced upwards, beginning the wave motion
What happens to the wave when it reaches the continental shelf? (Tsunami tectonics)
Increased friction causes the wave to level in an elliptic motion, creating a wall of water
What areas were affected by this tsunami? (Tsunami tectonics)
- India
- Sri Lanka
- Thailand
- Maldives
