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Deep-ocean Assessment and Reporting of Tsunamis (DART)
In the 1980s, the NOAA Pacific Marine Environmental Laboratory (PMEL) developed deep ocean tsunameters for the early detection, measurement, and real-time reporting of tsunamis in the open ocean. The tsunameters were developed by PMEL Project DART (Deep-ocean Assessment and Reporting of Tsunamis). A DART system consists of a seafloor bottom pressure recording (BPR) system capable of detecting tsunamis as small as 1 cm, and a moored surface buoy for real-time communications. In 2003, operational responsibility of DART transitioned from PMEL to the National Data Buoy Center.