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Ymittos Athens, Greece

Palaeogeographical reconstruction of the seafront of the ancient city of Delos is based on the recording and study of all available indicators of sea level change. Contemporary submerged beachrock formations and presently submerged areas of ancient human activity, including ancient coastal constructions, indicate the phases, vertical direction, extent and time frame of the changes. The sea level along the coasts of Delos has risen by a total of 2.15m since the end of the Hellenistic period. This change occurred during two successive distinct phases of submersion, initially by 1.35m and then by another 0.80m. The sea's transgression into the ancient coastal zone by a width of at least 30m radically altered parts of its geomorphology and resulted in the submersion of the ancient sea defences. © 2011 Elsevier Ltd and INQUA. Source

Mourtzas N.D.,16 18 Kefallinias Str. | Kissas C.,42 Chaimanta Str. | Kolaiti E.,16 18 Kefallinias Str.
Quaternary International | Year: 2014

Study of the architectural, morphological and constructional features of the coastal harbour installations of the ancient foreharbour of Lechaion indicates that they were built or rebuilt during the period of the Roman domination of Corinth, and has facilitated the reconstruction of the vertical movements and the palaeogeography of the coast. On the basis of the current position of the sea level indicators including beachrocks, fossilized uplifted and submerged marine notches, and ancient coastal harbour installations, and the relationship between them, the sea level during the Roman operation of the harbour was determined to be 0.90 m lower than at present. Furthermore, the subsequent abandonment of the harbour and the siltation of its constructions were determined. During two successive tectonic subsidence co-seismic events, the sea level rose by 2.0 m in total, 1.60 m during the first event and 0.40 m during the second one. A strong uplift tectonic event followed and the sea level dropped by 1.10 m. This regression of the sea was responsible for the present shoreline morphology. Determination of the sea level fluctuation at the shore of the ancient harbour of Lechaion allowed the palaeogeographical reconstruction of the coast in different stages related to these changes. © 2013 Elsevier Ltd and INQUA. Source

Kolaiti E.,16 18 Kefallinias Str. | Mourtzas N.D.,16 18 Kefallinias Str.
Quaternary International | Year: 2015

Along the Peloponnesian coast of the Saronic Gulf and on the coast of Aegina and Poros islands, submerged coastal geomorphological features related directly with submerged ancient coastal constructions, indicate three distinct sea levels. Submerged tidal notches incised on the carbonate basement, beachrocks formed in the intertidal zone and archaeological indicators, such as the ancient harbour installations in Kenchreai and Epidaurus and on Aegina island, the extended coastal buildings and constructions in Agios Vlasis, Psifta and Palaiokastro-Methana, and Vagionia on Poros island, are used to determine the age and magnitude of submersion and the extent of the Upper Holocene marine transgression. By the correlation of geomorphological, historical and archaeological indications three distinct sea levels were identified, at-3.30±0.15m,-0.90±0.15m and-0.55±0.05m. Initial change in sea level occurred definitely after AD 400±100. The intermediate change is dated between AD 1586 and 1839, and the most recent change after 1839. Sea transgression followed a long period of sea level stability, which lasted at least 2200 years, from the Middle Bronze Age to the Late Roman period. © 2015 Elsevier Ltd and INQUA. Source

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