Morphometric analysis of the drainage network of Samos Island (northern Aegean Sea): Insights into tectonic control and flood hazards |
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Affiliation: | 1. Agricultural University of Athens, Laboratory of Mineralogy–Geology, Iera Odos 75, 118 55 Athens, Greece;2. University of Thessaly, Department of Ichthyology and Aquatic Environment, Odos Fitokou, 384 46 Volos, Greece;3. Aristotle University of Thessaloniki, Department of Forestry and Natural Environment, Laboratory of Engineering Sciences and Topography, 54124, Thessaloniki, Greece |
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Abstract: | The morphometric analysis of alluvial drainage provides insights into its dynamics, erosion capacity, susceptibility to floods and possible genetic relations to tectonic faulting. In this study, we analysed the drainage system of Samos Island, located in the northern Aegean Sea. The results indicate a vulnerability to erosion and flooding events, and these intense phenomena concentrate mostly on third-order catchments. Two dissimilar drainage network systems are shown: an older drainage network system with a main NW–SE direction, which includes fourth- and fifth-order branches, and a recent drainage network system, which includes new, smaller order branches with a main NE–SW direction. The major tectonic fault orientations are NNW–SSE. The branches of the hydrographic network and faults present different directions, which indicates that the hydrographic pattern is not affected by tectonics. |
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Keywords: | Morphometric analysis Hydrographic network Tectonic control Samos island |
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