A build-up of stress on faults in Sumatra following the Indonesian earthquake is likely to trigger another large quake and perhaps a tsunami.
That is the claim made in Nature by a team from the University of Ulster.
The slip that caused last year's devastating quake placed increased stress on the Sumatran fault and on the adjacent undersea Sunda Trench.
A new rupture could trigger a magnitude 7-7.5 quake on land and a magnitude 8-8.5 quake beneath the sea, they say.
http://news.bbc.co.uk/1/hi/sci/tech/4354217.stm