The 426 BC Malian Gulf tsunami devastated the coasts of the Malian and Euboean Gulfs,

Greece Greece,, or , romanized: ', officially the Hellenic Republic, is a country in Southeast Europe. It is situated on the southern tip of the Balkans, and is located at the crossroads of Europe, Asia, and Africa. Greece shares land borders with ...

, in the summer of 426 BC.

Thucydides Thucydides (; grc, , }; BC) was an Athenian historian and general. His ''History of the Peloponnesian War'' recounts the fifth-century BC war between Sparta and Athens until the year 411 BC. Thucydides has been dubbed the father of "scientifi ...

inquired into its causes, and concluded that the

tsunami A tsunami ( ; from ja, 津波, lit=harbour wave, ) is a series of waves in a water body caused by the displacement of a large volume of water, generally in an ocean or a large lake. Earthquakes, volcanic eruptions and other underwater explo ...

must have been caused by an

earthquake An earthquake (also known as a quake, tremor or temblor) is the shaking of the surface of the Earth resulting from a sudden release of energy in the Earth's lithosphere that creates seismic waves. Earthquakes can range in intensity, from ...

"A History of the Peloponnesian War", 3.89.2–5
/ref> He was thus historically the first known to correctly interpret the cause of a tsunami as a preceding geological event.

Herodotus Herodotus ( ; grc, , }; BC) was an ancient Greek historian and geographer from the Greek city of Halicarnassus, part of the Persian Empire (now Bodrum, Turkey) and a later citizen of Thurii in modern Calabria ( Italy). He is known f ...

, in contrast, had attributed the Potidaea tsunami to the divine wrath of

Poseidon Poseidon (; grc-gre, Ποσειδῶν) was one of the Twelve Olympians in ancient Greek religion and myth, god of the sea, storms, earthquakes and horses.Burkert 1985pp. 136–139 In pre-Olympian Bronze Age Greece, he was venerated as a ch ...

Ancient records

The Malian Gulf tsunami was caused by one of a series of earthquakes in the summer of 426 BC which affected the course of the

Peloponnesian War The Peloponnesian War (431–404 BC) was an ancient Greek war fought between Athens and Sparta and their respective allies for the hegemony of the Greek world. The war remained undecided for a long time until the decisive intervention of th ...

by forcing the advancing

Spartans Sparta (Doric Greek: Σπάρτα, ''Spártā''; Attic Greek: Σπάρτη, ''Spártē'') was a prominent city-state in Laconia, in ancient Greece. In antiquity, the city-state was known as Lacedaemon (, ), while the name Sparta referred t ...

to abort their planned invasion of

Attica Attica ( el, Αττική, Ancient Greek ''Attikḗ'' or , or ), or the Attic Peninsula, is a historical region that encompasses the city of Athens, the capital of Greece and its countryside. It is a peninsula projecting into the Aegean Se ...

“A History of the Peloponnesian War”, 3.89.1
/ref>

Strabo Strabo''Strabo'' (meaning "squinty", as in strabismus) was a term employed by the Romans for anyone whose eyes were distorted or deformed. The father of Pompey was called "Pompeius Strabo". A native of Sicily so clear-sighted that he could see ...

reported that throughout Greece parts of islands were submerged, rivers permanently displaced and towns devastated.

"Geography", 1.3.20
/ref> The tsunami itself hit the coast of the Malian Gulf at three different places, reaching towns as far as three quarters of a mile inland. The force of the tsunami was such that at one place a

trireme A trireme( ; derived from Latin: ''trirēmis'' "with three banks of oars"; cf. Greek ''triērēs'', literally "three-rower") was an ancient vessel and a type of galley that was used by the ancient maritime civilizations of the Mediterranean S ...

was lifted out of its dock and thrown over a city wall. Thucydides gave the following account, noting the characteristic sequence of quake, receding water and huge wave:

About the same time that these earthquakes were so common, the sea at
Orobiae Orobiae or Orobiai ( grc, Ὀρόβιαι) was a town on the western coast of ancient Euboea, between Aedepsus and Aegae, which possessed an oracle of Apollo Selinuntius. The town was partly destroyed by an earthquake and an inundation of the sea ...
, in Euboea, retiring from the then line of coast, returned in a huge wave and invaded a great part of the town, and retreated leaving some of it still under water; so that what was once land is now sea; such of the inhabitants perishing as could not run up to the higher ground in time. A similar inundation also occurred at Atalanta, the island off the Opuntian-Locrian coast, carrying away part of the Athenian fort and wrecking one of two ships which were drawn up on the beach. At Peparethus also the sea retreated a little, without however any inundation following; and an earthquake threw down part of the wall, the town hall, and a few other buildings. ... The cause, in my opinion, of this phenomenon must be sought in the earthquake. At the point where its shock has been the most violent the sea is driven back, and suddenly recoiling with redoubled force, causes the inundation. Without an earthquake I do not see how such an accident could happen.

While the

epicentre The epicenter, epicentre () or epicentrum in seismology is the point on the Earth's surface directly above a hypocenter or focus, the point where an earthquake or an underground explosion originates. Surface damage Before the instrumental pe ...

of the 426 BC Malian Gulf tsunami quake is yet to be located, evidence points at a crustal movement along one of the faults in the Euboean gulf, rather than submarine landslides.

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Ancient records

See also

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Further reading