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The Hellenic arc is one of the most active seismic zones in western Eurasia. [2] It has regularly been the source for magnitude 7 earthquakes in the last hundred years of instrumental recording and the location for at least two historical events that were probably of about magnitude 8 or more, the 365 Crete earthquake and the 1303 Crete earthquake.
The Hellenic Trench, with the inner South Aegean Volcanic Arc, and the outer non-volcanic Hellenic arc [1]: 34 . The Hellenic Trench (HT) is an oceanic trough located in the forearc of the Hellenic arc, an arcuate archipelago on the southern margin of the Aegean Sea plate, or Aegean Plate, also called Aegea, the basement of the Aegean Sea.
Tomographic data indicate that there is no link between the descending HSZ slab and those associated with either the Calabrian arc to the west or the Cyprus arc to the east. [2] However, a study of earthquake hypocentres suggests that the shallower part of the zone is continuous with the subduction zone west of Cyprus, with a developing slab ...
This region in the Mediterranean is part of the Hellenic arc and is known for its frequent and violent seismic activity and is home to Europe's deadliest earthquakes. The island of Crete in particular lies above a convergent boundary where the Aegean Sea and African plates meet, specifically the African plate subducting beneath the Aegean Sea.
The Hellenic arc is an arcuate tectonic feature related to the subduction of the African plate beneath the Aegean Sea plate.It is one of the most active seismic zones in western Eurasia and has a history of large earthquakes that also affect Egypt. [4]
The Kythira–Antikythira Strait is situated within the Western Hellenic arc. It measures approximately 100 kilometres (62 mi) in length and is situated between the Peloponnese and the island of Crete. [1] [2] [3] Many ships have sunk in the area, including HMS Greyhound (H05), HMS Gloucester (62), and SS Ivernia. [4]
Along the Hellenic arc, the African plate subducts beneath the Aegean Sea at around 40 mm (1.6 in) per year. Shallow-focus earthquakes of less than 50 km (31 mi) depth are common—the result of accommodating convergence via subduction-related deformation. Back-arc extension occurs within the Aegean Sea, above the subducting crust, causing ...
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