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Mapping the ancient port at the archaeological site of Itanos (Greece) using shallow seismic methods

Vafidis Antonis, Manakou M., Kritikakis Georgios, Voganatsis D., Sarris Apostolos, Kalpaxis T.

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Summary

A shallow seismic survey was carried out at the archaeological site of Itanos, Crete to locate and map the ancient port. The target layer in the area surveyed consists of Permian–Triassic phyllites covered by alluvial deposits. Seismic refraction and reflection experiments were carried out along eight profiles with a total length 580 m.The seismic refraction data depict two refractors. Shear-wave velocities indicate that the first refractor, at depths ranging from 1 to 2 m, corresponds to the water table. The second one corresponds to the top of phyllites. The stacked section from the seismic reflection survey shows two major reflectors, attributed to the top and bottom of the eroded phyllites. A three-dimensional image of the basement relief indicated the potential shape and extent of Itanos port.This result is further supported by anthropogenic anomalies on the resistivity maps and sections observed at locations where the depth to the top of the basement is small. The integration of the seismic data, aerial imagery and archaeological findings indicated that the ancient port, now covered by recent deposits, was surrounded by the sea, the two acropolis to the north, a well to the east and a hill to the south.

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