Les crues brutales dans la plaine d'Argos (Grèce) : une contrainte à l'aménagement, de l'Antiquité à nos jours/Violent flood in the plain of Argos (Greece): developments under constraint from Antiquity down to present day

摘要

Abstract Combining the geomorphological analysis with new historical and archaeological data, we have reconstructed the alluvial dynamics at work in the Argos plain from the Mycenian era onwards. We try to show that violent floods are a permanent risk, though nowadays rather neglected in the recent developments of the plain, as a Mycenian dam and levees dating back to the 4th and 5th centuries ВС show it. The violent floods have caused substantial alluvial reshaping, which is deeper in the West, where the deposits are up to 8 m deep, than in the East of the plain, where they are no deeper than 40 cm or 1 m. In the eastern part of the plain, the Venitian cadastre ofNauplia, made at the end of the eighteenth century, and contemporary flooding show it. The explanation of such a dissymetry is to be found in orographie and climatic factors, the highest mountains and rainfalls being situated on the western drainage basins.