National Geographic : 1988 Jul
The sequence of seismic waves crossing Cyprus on these screens is based on a computer simulation of the earthquake (bottom). When the third wave buckled the earth at 4:52:31, few were alive to witness it. GREECE "The mad discord of the elements" reported by :Ammianus convulsed Egypt and Greeceas well. Then the rush of a power ful tsunamispawned by the earthquake "killed many thousands of men by drowning" in Alexan dria,250 miles southwest, and the Peloponnesus, 550 miles northwest. Its effect on Kourionis not known. Travelingas fast as 500 miles an hour, the tsunami is believed to have reached as far as Gibraltar. TURKEY TSUNAMI Alexand EGYPT PAINTINGSBY BRYN BARNARD;GRAPHICSBY DAVIS MELTZER To have wrecked Kourion and generated the tsunami, the quake would have regis tered at least 7 on the Richter scale, calculated seismologist Terry Wallace of the University ofArizona. He modeled this synthetic seismogram on data from a 1983 JapanSea quake that left similar damage 40 miles from its epicenter. Ground acceleration is calibrated to the force of gravity (% G).