Local date | 426 BC |
---|---|
Magnitude | Unknown |
Epicenter | 38°52′N22°37′E / 38.87°N 22.62°E |
Areas affected | Ancient Greece |
Tsunami | Yes |
Casualties | Unknown |
The 426 BC Malian Gulf tsunami devastated the coasts of the Malian and Euboean Gulfs, Greece, in the summer of 426 BC. [1] [2] Thucydides inquired into its causes, and concluded that the tsunami must have been caused by an earthquake. [3] He was thus historically the first known to correctly interpret the cause of a tsunami as a preceding geological event. [4] Herodotus, in contrast, had attributed the Potidaea tsunami to the divine wrath of Poseidon. [5]
The Malian Gulf paleotsunami was caused by one of a series of earthquakes in the summer of 426 BC which affected the course of the Peloponnesian War by forcing the advancing Spartans to abort their planned invasion of Attica. [6] Strabo reported that throughout Greece parts of islands were submerged, rivers permanently displaced and towns devastated. [7] The tsunami itself hit the coast of the Malian Gulf at three different places, [7] reaching towns as far as three quarters of a mile inland. [8] The force of the tsunami was such that at one place a trireme was lifted out of its dock and thrown over a city wall. [7]
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, 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. [3]
While the epicentre 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. [9]
A tsunami 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 underwater explosions above or below water all have the potential to generate a tsunami. Unlike normal ocean waves, which are generated by wind, or tides, which are in turn generated by the gravitational pull of the Moon and the Sun, a tsunami is generated by the displacement of water from a large event.
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The History of the Peloponnesian War is a historical account of the Peloponnesian War, which was fought between the Peloponnesian League and the Delian League. It was written by Thucydides, an Athenian historian who also served as an Athenian general during the war. His account of the conflict is widely considered to be a classic and regarded as one of the earliest scholarly works of history. The History is divided into eight books.
Opus was an ancient Greek city that was the chief city of a tribe of Locri, who were called from this place the Opuntian Locrians, and the territory, the Opuntian Locris.
Potidaea was a colony founded by the Corinthians around 600 BC in the narrowest point of the peninsula of Pallene, the westernmost of three peninsulas at the southern end of Chalcidice in northern Greece.
Cleonae or Cleonæ or Kleonai was an ancient city on the Acte or Akte (Ακτή) peninsula, the easternmost of the three peninsulas forming the ancient Chalcidice, on its western coast, south of Thyssus (Thyssos). Thucydides says that among the cities of the peninsula, Sane was colony of Andros, while Thyssus, Cleonae, Acrothoum, Olophyxus and Dium had a heterogeneous population of bilingual barbarians formed by a few Chalcidians and, the rest, Pelasgians, Bisaltians, Crestonians and Edoni. Strabo points out that its primitive populated was composed of Pelasgians from Lemnos. According to Strabo, it was colonized by Euboean colonists from Chalcis. Heraclides Lembus also writes that Chalcidians settled there. It was a member of the Delian League as it appears on the tribute lists to Athens during the Peloponnesian War.
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Oreus or Oreos, prior to the 5th century BC called Histiaea or Histiaia (Ἱστίαια), also Hestiaea or Hestiaia (Ἑστίαια), was a town near the north coast of ancient Euboea, situated upon the river Callas, at the foot of Mount Telethrium, and opposite Antron on the Thessalian coast. From this town the whole northern extremity of Euboea was named Histiaeotis According to some it was a colony from the Attic deme of Histiaea; according to others it was founded by the Thessalian Perrhaebi. Another foundation story had it that the name Histiaea is said to derive from the mythical figure Histiaea, the daughter of Hyrieus. It was one of the most ancient of the Euboean cities. It occurs in the Catalogue of Ships in the Iliad, where Homer gives it the epithet of πολυστάφυλος ; and the Periplus of Pseudo-Scylax mentions it as one of the four cities of Euboea. It was an important city in classical antiquity due to its strategic location at the entrance of the North Euboean Gulf, in the middle of a large and fertile plain.
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