The Euripus Strait ( ) is a narrow channel of water separating the

Greek Greek may refer to: Anything of, from, or related to Greece, a country in Southern Europe: *Greeks, an ethnic group *Greek language, a branch of the Indo-European language family **Proto-Greek language, the assumed last common ancestor of all kno ...

island of

Euboea Euboea ( ; , ), also known by its modern spelling Evia ( ; , ), is the second-largest Greek island in area and population, after Crete, and the sixth largest island in the Mediterranean Sea. It is separated from Boeotia in mainland Greece by ...

in the

Aegean Sea The Aegean Sea is an elongated embayment of the Mediterranean Sea between Europe and Asia. It is located between the Balkans and Anatolia, and covers an area of some . In the north, the Aegean is connected to the Marmara Sea, which in turn con ...

from

Boeotia Boeotia ( ), sometimes Latinisation of names, Latinized as Boiotia or Beotia (; modern Greek, modern: ; ancient Greek, ancient: ), is one of the regional units of Greece. It is part of the modern regions of Greece, region of Central Greece (adm ...

mainland Greece Greece is a country in Southeastern Europe, on the Balkans, Balkan Peninsula. It is bordered to the north by Albania, North Macedonia and Bulgaria; to the east by Turkey, and is surrounded to the east by the Aegean Sea, to the south by the Cret ...

. The strait's principal port is

Chalcis Chalcis (; Ancient Greek and Katharevousa: , ), also called Chalkida or Halkida (Modern Greek: , ), is the chief city of the island of Euboea or Evia in Greece, situated on the Euripus Strait at its narrowest point. The name is preserved from ...

on Euboea, located at the strait's narrowest point. The strait is subject to strong tidal currents which reverse direction approximately four times a day. Tidal flows are very weak in the

Eastern Mediterranean The Eastern Mediterranean is a loosely delimited region comprising the easternmost portion of the Mediterranean Sea, and well as the adjoining land—often defined as the countries around the Levantine Sea. It includes the southern half of Turkey ...

, but the strait is a remarkable exception. Water flow peaks at about , either northwards or southwards, and lesser vessels are often incapable of sailing against it. When nearing flow reversal, sailing is even more precarious because of vortex formation. The Swiss scholar François-Alphonse Forel contributed to an understanding of the enigmatic phenomenon by his study of

limnology Limnology ( ; ) is the study of inland aquatic ecosystems. It includes aspects of the biological, chemical, physical, and geological characteristics of fresh and saline, natural and man-made bodies of water. This includes the study of lakes, ...

and the discovery of

seiche A seiche ( ) is a standing wave in an enclosed or partially enclosed body of water. Seiches and seiche-related phenomena have been observed on lakes, reservoirs, swimming pools, bays, harbors, caves, and seas. The key requirement for formatio ...

, where layers of water of differing temperature oscillate in thickness in a confined body of water. But the problem was solved completely only by D. Eginitis, director of the Athens Observatory, who published his conclusions in 1929.

Etymology

From

Ancient Greek Ancient Greek (, ; ) includes the forms of the Greek language used in ancient Greece and the classical antiquity, ancient world from around 1500 BC to 300 BC. It is often roughly divided into the following periods: Mycenaean Greek (), Greek ...

(eúrīpos, "any strait or narrow sea, where the flux and reflux is violent"); from (eû, "well") + (rhipḗ, “swing or force with which anything is thrown”), from (rhíptō, "to throw").

Bridges

There are two road bridges across the strait, both at Chalcis. One is the Euripus Bridge or Chalcis Bridge, a two-pylon, cable-suspended bridge built south of town in 1992, and commonly called the "New" or "High" bridge, with a span of about 215 m (705 ft). The strait is 160 m (525 ft) wide at this point. The bridge is accessible via a fork on the main road at Aulis. The "Old" or "Low" or "Sliding" Bridge lies across midtown, and can slide away to allow shipping traffic. It is located at the narrowest point of the strait, where it is only 38 m (125 ft) wide. It accommodates two lanes of vehicular traffic. It was originally built as a retractable bridge in 1858, replaced by a rotating one in 1896. The existing, originally wooden bridge was built in 1962 and was extensively refurbished in 1998.

History

The Euripus was closed by a dike of coarse sediment until about 6000 years ago, when it was opened by an (unrecorded) earthquake.

Herodotus Herodotus (; BC) was a Greek historian and geographer from the Greek city of Halicarnassus (now Bodrum, Turkey), under Persian control in the 5th century BC, and a later citizen of Thurii in modern Calabria, Italy. He wrote the '' Histori ...

mentions the strait during his description of the Battle of Artemisium (480 BC), with the account implying that it was navigable by large fleets of

trireme A trireme ( ; ; cf. ) was an ancient navies and vessels, ancient vessel and a type of galley that was used by the ancient maritime civilizations of the Mediterranean Sea, especially the Phoenicians, ancient Greece, ancient Greeks and ancient R ...

Diodorus Siculus Diodorus Siculus or Diodorus of Sicily (; 1st century BC) was an ancient Greece, ancient Greek historian from Sicily. He is known for writing the monumental Universal history (genre), universal history ''Bibliotheca historica'', in forty ...

reports that in 411 BC the Euboeans closed the strait by mostly rebuilding the dike, with the goal of making themselves part of Boeotia, therefore not an island subject to Athenian hegemony. Diodorus states that gaps had to be left in the dike to allow the Euripus tides to flow through; the narrowness of the remaining passage made the current much more intense. Only a single passage was left

navigable A body of water, such as a river, canal or lake, is navigable if it is deep, wide and calm enough for a water vessel (e.g. boats) to pass safely. Navigability is also referred to in the broader context of a body of water having sufficient under ...

, just wide enough for a single ship. There is no mention of the closure of the strait in either

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

' ''

History of the Peloponnesian War The ''History of the Peloponnesian War'' () is a historical account of the Peloponnesian War (431–404 BC), which was fought between the Peloponnesian League (led by Sparta) and the Delian League (led by Classical Athens, Athens). The account, ...

'' or

Xenophon Xenophon of Athens (; ; 355/354 BC) was a Greek military leader, philosopher, and historian. At the age of 30, he was elected as one of the leaders of the retreating Ancient Greek mercenaries, Greek mercenaries, the Ten Thousand, who had been ...

's ''

Hellenica ''Hellenica'' () simply means writings on Greek (Hellenic) subjects. Several histories of the 4th-century BC Greece have borne the conventional Latin title ''Hellenica'', of which very few survive.Murray, Oswyn, "Greek Historians", in John Boardma ...

''.

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 "Gnaeus Pompeius Strabo, Pompeius Strabo". A native of Sicily so clear-si ...

wrote that at an unspecified later date the strait was crossed by a bridge two plethra long (approximately , which is probably an exaggeration). Some vestiges of the artificial dike probably remained, so the gap spanned by the bridge could have been narrower than the channel that existed before 411 BC. Ancient historians do not record the depth of the channel; even the passage under Strabo's bridge may have been scoured by the tides to a depth sufficient for ancient shipping.

Procopius Procopius of Caesarea (; ''Prokópios ho Kaisareús''; ; – 565) was a prominent Late antiquity, late antique Byzantine Greeks, Greek scholar and historian from Caesarea Maritima. Accompanying the Roman general Belisarius in Justinian I, Empe ...

reports that during the reign of Emperor

Justinian I Justinian I (, ; 48214 November 565), also known as Justinian the Great, was Roman emperor from 527 to 565. His reign was marked by the ambitious but only partly realized ''renovatio imperii'', or "restoration of the Empire". This ambition was ...

(527 to 565 AD) there were two channels in the Euripus, the large original channel and a new narrower cleft to the east of it, so narrow that it could be crossed with a single plank of wood. This later stream was later widened to make the present shipping channel. At the time when Procopius wrote, the name of the fortress on the Euripus was probably "Euripus," which had become "Egripos" by 1204, and was adopted and slightly altered to "Nigriponte" by the Latins who occupied the place in 1205. (The name has nothing to do with any sort of "Black Bridge," except as a Veronese or Venetian joke, or folk-etymological corruption or re-interpretation in reference to the old bridge across the channel.) In 1395, Nicola di Martoni came to Negropont during the return from his pilgrimage to Egypt and Palestine. He is clear that the main shipping channel in the Venetian period was on the side of the Boeotian mainland, and mentions the mills on the narrower channel, which he says were sometimes broken in the speed and turbulence of the flow there. We have further information about the shipping channel and its single wooden bridge from various documents in the archives of the Venetian Empire. In 1408, the formation of a reef under the bridge severely affected shipping (http://www.archiviodistatovenezia.it/divenire/collezioni.htm ''Senato, Deliberazioni, Misti''. 48,43v) and in 1439 there was concern over the tendency of the current to erode the surroundings of the pilings that supported the bridge (http://www.archiviodistatovenezia.it/divenire/collezioni.htm ''Senato, Deliberazioni, Misti''. 60,140r–42r).Transcripts in C. Sathas, ''Mnēmeia Hellēnikēs historias = Documents inédits relatifs à l'histoire de la Grèce au Moyen Âge publiés sous les auspices del la Chambre des députés de Grèce'', 2.215 and 3.454, respectively.

Evliya Çelebi Dervish Mehmed Zillî (25 March 1611 – 1682), known as Evliya Çelebi (), was an Ottoman Empire, Ottoman explorer who travelled through his home country during its cultural zenith as well as neighboring lands. He travelled for over 40 years, rec ...

, in his ''

Travel Journal The genre of travel literature or travelogue encompasses outdoor literature, guide books, nature writing, and travel memoirs. History Early examples of travel literature include the ''Periplus of the Erythraean Sea'' (generally considered a 1s ...

'' (SN VIII250a27, ff.), tells us that the narrow channel was first opened out enough for a galley to pass through at some time in the late 16th century, and was still just barely wide enough at the time of his visit in 1668 for a galley to squeeze through, even though the old shipping channel had been abandoned. By the end of the 18th century it was well on its way to being the width of the modern channel.

Notes

References

* Diodorus Siculus, ''Bibliotheca Historica'', 13.47. * Kambouroglou, Evangelos, Hampik Maroukian, Adamantios Sampson, "Coastal Evolution North and South of Khalkis (Euboea) in the last 5000 Years," ''Archaeology of Coastal Changes: Proceedings of the First International Symposium'' "Cities on the Sea—Past and Present" (BAR International Series 404) 1988. Pp. 71–79. * Leon Legrand, ed. "Relation du pélerinage à Jérusalem de Nicolas de Martoni, notaire italien," ''Revue de l'Orient Latin'' 3: (1895) 566–669, (564–55); recently reedited in ''Studium Biblicum Francescanum'', Collectio Major, 42.), * Procopius, ''On the buildings of Justinian'', 4.3.16.

External links