The earthquake that struck Sumatra three days ago is likely to be followed by an even larger tremor that could cause a tsunami as devastating as the one that hit Indonesia in 2004, according to a leading seismologist.
Professor Kerry Sieh, director of the Earth Observatory at Singapore’s Nanyang University, says earthquakes measured at 8.4 and 7.8 which hit southern Sumatra in September 2007 marked the beginning of a cycle of tremors that starts roughly every 200 years.
