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