One hour warning possible for tsunamis originating from the Sunda Trench. What we do with that one hour is the key question. People’s Daily Online — Nations progess on tsunami detection Thailand launched the first of 22 US-made tsunami-detection buoys to be positioned around the Indian Ocean as part of a regional warning system against giant waves caused by earthquakes under the sea. The satellite-linked deep-sea buoy, unveiled at a ceremony on the tsunami-hit island of Phuket, will float 1,000 kilometres offshore, roughly midway between Thailand and Sri Lanka. “This will give us the capability to provide 1 hour warning to most of the countries in the northern part of the basin,” Curtis Barret of the US National Oceanic and Atmospheric Administration said.