October 14, 557 Earthquake: Marmara Sea, Turkey

557, October 6 and December 14. 41 N, 29 E, intensity IX. Destructive in Istanbul and in vicinity. (reference #1149)

557, October 6 and December 14. Many shocks. (reference #521)

557, October 16 (intensity V) and November 14 (intensity VII). 41.04 N, 28.98 E, intensity V. Vicinity of Istanbul. (reference #1071)

557, December 14. 40.9 N, 28.8 E, magnitude 7.0, intensity IX at Constantinople. Agathias reports that the earthquake almost completely razed to the ground Constantinople. The shock occurred towards midnight and many houses were destroyed, particularly in the district Rhegium which is the port of Constantinople. A large number of ordinary people perished in the disaster. Malalas records that the two walls of Constantinople suffered, both the old one which had been put up by Constantine and the one built by Theodosios. Parts of churches collapsed, especially those on the far side of the Hebdomon. This tremendous disaster lasted for ten days. Many parts of outlying cities also collapsed (Georgiades, 1904; Antoniades, 1907; Guidoboni et al., 1994). (reference #4408)