Earth Observatory of Singapore

Sinabung volcano in Sumatra, Indonesia, has been almost continuously erupting in the last three years. It has been on the highest alert level since 2013.

The highly active Sumatran Subduction Zone has produced more than four great earthquakes in the last decade. The first of these was the giant Mw 9.2 Sumatra-Andaman earthquake that ruptured on 26 December 2004. This devastating event was followed by three others – the Mw 8.6 Nias-Simeulue quake in 2005, the Mw 8.4 Bengkulu earthquakes in 2007, and the Mw 7.7 Mentawai tsunami-earthquake in 2010.

People–Coral–Mentawai is a documentary short about the methods used by scientists at the Earth Observatory of Singapore to develop a timeline of earthquakes in the West Sumatra region.

Our multi-disciplinary project explores the paleotsunami record in northwestern Aceh Province, Sumatra. We are focusing on an extraordinary sedimentary deposit in a coastal limestone cave that contains a series of tsunami deposits separated by guano, and offer a nearly complete mid-Holocene record of tsunamis. Our investigations will be incorporated into tsunami hazard modelling and risk assessment along the western...