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551 Beirut earthquake : ウィキペディア英語版 | 551 Beirut earthquake
The 551 Beirut earthquake occurred on 9 July 551. It had an estimated magnitude of about 7.6 on the moment magnitude scale and a maximum felt intensity of X (Intense) on the Mercalli intensity scale. It triggered a devastating tsunami which affected the coastal towns of Byzantine Phoenicia, causing great destruction and sinking many ships. Overall large numbers of people were reported killed, with one estimate of 30,000 by Antoninus of Piacenza for Beirut alone. ==Tectonic setting== Lebanon lies astride the Dead Sea Transform, which forms part of the boundary between the Arabian Plate and the African Plate. In Lebanon the fault zone forms a restraining bend associated with a right stepping offset of the fault trace. Transpressional deformation associated with this bend has formed a number of thrust faults, such as the recently identified ''Mount Lebanon thrust'', which underlies the city and is interpreted to crop out at the seabed offshore.
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