Quote:
Originally Posted by Growler
One of the videos I just saw from Japan indicated a tsunami warning was issued for the Miyagi Prefecture of over 10m shortly after the quake.
10 f-ing meters.
Dear God.
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Indeed, but to put this into perspective a little bit, when the Boxing Day tsunami hit Aceh, the waves were recorded at their highest of 30m in some areas. It was an average of 24m when the waves actually came ashore.
10m is still terrible though, particularly in such a populated area.
I do ponder, and this is a thought for another time really, whether a tsunami hitting a populated area loses its energy faster and travels less distance than one hitting a non-populated area, due to the amount of debris it picks up and the mass of it increasing the energy required to push the wave forward. Something for the boffins to analyse I dare say.