Tsunami Warning Systems

In a previous blog

Tsunami early warning system


The 2004 Indian Ocean earthquake and tsunami took the world by surprise. In the aftermath, the international community came together to design an effective early warning system for this region: GITEWS (German Indonesian Tsunami Early Warning System) was born. Designed and installed during the course of several years

The data would then enable the staff at the station to determine:
- The location and strength of the quake,
- The rupture that caused the seismic vibrations and if there has been vertical movement in the sea floor, large enough to cause a tsunami,
- Tsunami detection through tide gauges and buoys with GPS signals that are able to detect changes in sea level.

The system is designed

Knowledge, information and education


It has been calculated that in the event of a tsunami generating earthquake in the Mentawai gap, the first wave would reach the islands in 5-10 minutes and mainland Sumatra in 20-30 minutes. Even with an effective warning system in place, the window for reaction is very narrow. This is one of the reasons why education and outreach can be a vital component in tsunami defense.

As the MEGATERA expedition nears its completion, the experts onboard prepare to process the data and are confident that its application will add true value to the quality of life of coastal communities in Sumatra.

From ocean to inbox

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