Tsunamis
- Created by: eviedeehan
- Created on: 27-02-24 15:51
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- Tsunamis
- causes of tsunamis
- submarine earthquakes at subduction zones - seabed is displaced vertically which displaces a large volume of water
- examples
- 2004 - Boxing Day in Indonesia
- 2011 - Tohoku, Japan 9 magnitude earthquake caused a tsunami
- characteristics of a tsunami
- long wavelength at sea - over 100km (the distance between two peaks of a wave
- short amplitude at sea - about 1m and barely noticeable - can increase to 25m when reach land
- velocity - can reach up to 700 kph in deep water, slow down in shallower water
- drawback - drop in sea level as water is drawn back to use in the tsunami
- wave train - hit the coastline in a series of waves
- causes of tsunamis
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