The seismic sea wave of July 9, 1956, in the Greek archipelago

The earthquake of July 9, 1956 (magnitude 7½, epicentral intensity VIII-IX MM), with epicenter at 36°54′N, 26°12′E, was followed by a severe seismic sea wave which originated near 36°49′N, 26°09E. The wave was probably produced by a series of landslides on the steep banks of the submarine trench of Amorgos. The amplitude of the wave near its source was 100 feet, and the agitation of the sea within the central area lasted several days. A list of seismic sea waves in the Greek archipelago and adjacent seas is given in the Appendix.