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NOAA tsunami buoys, Stennis Space Center, Mississippi, 2006. This is a DART (Deep-ocean Assessment and Reporting of Tsunamis) surface buoy. It receives data from a bottom pressure recording (BPR) package on the seafloor and transmits it to a satellite, which then relays it to NOAA's Tsunami Warning Centres and other ground stations.
Model release not required. Property release not required.