Natural Disasters - Tsunami
A tsunami is a massive wave of water which rolls into the shore area with a height of 15m +. An example of an earthquake-caused Tsunami is the 2004 Indian Ocean Earthquake. An example of a landslide-caused Tsunami is the Lituya Bay, Alaska tsunami.
Tsunami's are caused by displacement of large masses of water such as an underwater earthquake, volcanic eruption, landslide, or meteorite impact; most common being the earthquake.
Tsunami's are caused when the sea floor deforms and vertically displaces the water on top.
A tsunami is not a normal wave but much bigger. It looks more like an endlessly onrushing tide that forces it way around the obstacle.
They are much more dangerous than big waves because they contain immense energy and propagate at high speeds.