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April 6th, 2011
The Reliability of Tsunami Detection Buoys

The DART system was developed by the National Oceanic and Atmospheric Administration in 2001. It consists of a bottom pressure recorder anchored to the seafloor and a moored surface buoy. Data from the pressure recorder is transmitted to the buoy via an acoustic link, and the buoy sends the data to a satellite that communicates with a control station. Most of the buoys are located in the Pacific Ocean where a tsunami landfall is thought to be more likely. Other locations include the Atlantic Ocean and Carribean.

Of the 39 stations deployed in 2008 only an estimated 60 percent were operational by 2009. The report, issued by the National Research Council of the National Academy of Sciences, concluded that the buoy stations, despite their technological achievements, may not be a feasible long term solutions for providing improved early warning and real-time reporting of tsunamis. Read More