Κατεύθυνση Environmental, Disasters and Crises Management Strategies
Library of the School of Science

2021-04-01

2021

Grammenou Afroditi

Ευθύμιος Λέκκας, Καθηγητής, Τμήμα Γεωλογίας και Γεωπεριβάλλοντος, ΕΚΠΑ
Εμμανουήλ Σκούρτσος, Επ. Καθηγητής, Τμήμα Γεωλογίας και Γεωπεριβάλλοντος, ΕΚΠΑ
Μαρία Σταυροπούλου, Καθηγήτρια, Τμήμα Γεωλογίας και Γεωπεριβάλλοντος, ΕΚΠΑ

Ξαφνικές πλημμύρες και ροές κορημάτων. Η περίπτωση της Μάνδρας (15 Νοεμβρίου 2017). / Flash floods and debris flows. The case of Mandra, Greece (November 15th, 2017)

Greek

Flash floods and debris flows. The case of Mandra, Greece (November 15th, 2017)

The aim of this thesis is to present and describe the phenomena of debris flow and debris flood during a flash flood. More specifically, on the first part the nature of the phenomenon is analysed, what are its characteristics, the relevant classification, what factors affects it and what is studied in the field.
In the framework of this thesis, on the second part, the area of mountain Pateras, above Madra is studied. In this specific study, the classification of the factors that acted during the flash floods of November the 15th 2017 are investigated, in that area and in particular in the Soures basin and Agia Ekaterini.
In that area several cases of debris flows and debris floods were observed and mapped, broken down in the area that accumulated the maximum total rainfall, and downhill, in the Koulouriotikou basin, Soures and Agia Ekaterini. Between the two basins that were studied in depth, based on the number and total surface area as well as the maximum level, the basin of Agia Ekaterini prevails over Soures basin, with phenomena that reached level 5 (surface area greater than 40 acres). The small scale flows normally end up in larger receivers and feed them with sediment that depending on the flow of the stream and the dynamics of the flood, are transported down flow depending on the particle size. Low or no vegetation areas are greatly affected, and forestation was observed that works preventative for the initiation the spread and the final material deposition. Man made constructions and obstacles along the length of the flood also play a significant roll.

Science

Debris flows, flash floods

Yes

4

Yes

72

66

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https://pergamos.lib.uoa.gr/uoa/dl/object/2940581