This is extremely pointless, and i don't mean to be offensive with this; but do you think, if the large natural disater happened somewhere in a Western/Enlgish speaking world - would we (Or the Media) call it a Tidal Wave or a Tsunami?
or something else?
http://dict.die.net/tidal%20wave/
Tidal wave.
(a) See Tide wave, under Tide. Cf. 4th Bore.
(b) A vast, swift wave caused by an earthquake or some
extraordinary combination of natural causes. It rises far
above high-water mark and is often very destructive upon
low-lying coasts.
http://dictionary.reference.com/search?q=tsunami
Tsunami (Japanese):
A very large ocean wave caused by an underwater earthquake or volcanic eruption.
....These kind of random thoughts are what happen late at night