Syrtis minor


The Gulf of Gabes, also Cabès, Cabes, Gaps,[1] Arabic: خليج قابسḫalīǧ qābis, also known as Lesser Syrtis (from Greek Σύρτις; Syrtis Minor in Latin), contrasting with the Greater Syrtis in Libya, is a gulf on Tunisia's east coast in the Mediterranean Sea, off North Africa. The gulf roughly spans the coast from modern day the town of Mahrès in Sfax Gouvernorate to Djerba. At the head of the gulf is the city of Gabès (Ghannouche) where the tides have a large range of up to 2.1 m at spring tides.[2] Both Gabès and Sfax are major ports on the gulf, supporting sponge and tuna fisheries, with Gabès being the economic and administrative center.

Antiquity

The Latin name Syrtis Minor is used by Ancient Greek: ἡ μικρὰ Σύρτις (elsewhere also Σύρτις ἡ μικρὰ, Σύρτις ἡ μικροτέρα, ἡ μικροτέρα Σύρτις).

An alternative name was Λωτοφαγῖτις σύρτις Lotophagitis surtis "Syrtis of the lotus-eaters," reported by Strabo.[4] (Compare Syrtis Major, the ancient name of the Gulf of Sidra.)

Syrtis is referred to in the New Testament of the Bible[5] where the Apostle Paul relates being sent in chains to Rome to stand trial before Caesar Nero. The crew of his ship was worried about being driven by a storm into Syrtis,[6] and took precautions to prevent it, resulting, eventually, in being shipwrecked on the island of Malta in the Mediterranean Sea.

Strabo refers to Tacape (the modern Gabès) as an important entrepot of the Lesser Syrtis.

Geography

Most sources[2][7] consider the Gulf of Gabès as just being within the line between the northwest tip of Djerba (Jerba) Island on the southeast and Ras Yonga (Point Yonga) on the northwest. Ras Yonga is just north of the island of Jazīrat Khunayyis and its marshes[7] and some 52 kilometres (32 mi) southwest of Sfax. The geographer Strabo indicated that the entrance to the gulf was located at the islands of Cercinna (Kerkennah) and Meninx (Djerba).[4] Following Strabo gives a larger area with the line being from just north of Sfax to Djerba Island. That larger area would include part of the Kerkennah Islands and the coast around Sfax. The centroid for the smaller gulf is at 33°59′29″N 10°24′09″E / 33.99139°N 10.40250°E / 33.99139; 10.40250, and the distance across is 68.5 kilometres (42.6 mi), with a depth of 51.0 kilometres (31.7 mi). The larger gulf is 150 kilometres (93 mi) across[8] with a depth of 90 kilometres (56 mi), and the centroid is at 34°04′48″N 10°28′36″E / 34.08000°N 10.47667°E / 34.08000; 10.47667.

The entire Gulf of Gabes, both larger and smaller versions, is underlain by the continental shelf of the African Plate,[9] and is nowhere deeper than 200 meters.[10] During the Permian Period and Triassic Period, carbonate minerals and evaporites were deposited in the Gulf of Gabes which now form salt domes and diapirs.[11] In addition carbon and hydrocarbons primarily from vegetation were deposited. These now form the basis for the oil and gas industry in the gulf. Among the important oil and gas fields in the gulf are the Ashtart Field[2][12] and the Chergui Field.[13] The Ashtart Oil Terminal lies just outside the gulf at 34°17′N 11°23′E / 34.283°N 11.383°E / 34.283; 11.383 where tankers can easily tranship the oil.[14]

Notes

External links

  • Port Gabes, photograph from Panoramio

Coordinates: 34°00′N 10°25′E / 34.000°N 10.417°E / 34.000; 10.417

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