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Before and after photographs from space show the damage.
California tsunami researchers chronicle the disaster.
The US Geological Survey says a 9.0 magnitude quake triggered the wave.
UNESCO plans an Indian Ocean tsunami warning system.
US researchers determined the height of the wave using satellites.
The Institution of Structural Engineers reports that the earthquake lifted the seabed by up to 5m.
The Sri Lanka tsunami may have been more than 10m high in places.
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