build warning systems and functional networks of escape routes,
and construct physical protection barriers.
Progress along these lines has already begun: Thailand, with the help of UNESCO, constructed 76 tsunami warning towers in the six provinces along the Andaman Sea coast.
The United States provided two satellite-linked deep-sea buoys located 1000 km offshore to detect the sudden increases in pressure indicative of tsunamis, thereby giving a one hour warning to at-risk countries.
In addition to these preparedness measures, Thailand has undertaken various coastal ecosystem restoration projects to rehabilitate coral reefs and mangrove forests after the tsunami.