Tsunami

Tsunami was a Japanese word for a tidal wave, a sudden rush of water coming ashore from a body of water, such as an ocean, due to displacement. These types of waves are capable of causing great damage to life and property in coastal areas. Such waves are typically caused by seismic events, such as earthquakes.
The mad planet experienced tidal waves as part of its geologically unstable activity. () 
In 2366, the people of Bre'el IV feared a tsunami would result from the impact of their moon on the surface of their planet. ()
Note that despite the colloquial name, a tidal wave is not the same as a tide.
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it:Tsunami
Category:Geology