Κατεύθυνση Στρατηγικές Διαχείρισης Περιβάλλοντος - Περιβαλλοντική Εκπαίδευση
Library of the School of Science

2020-03-31

2020

Andriopoulos Petros

Δρ. Μ. Σταυροπούλου, Αναπληρώτρια Καθηγήτρια, Γεωλογίας & Γεωπεριβάλλοντος, ΕΚΠΑ
Δρ. Ε. Σκούρτσος, Επικ. Καθηγητής,Γεωλογίας & Γεωπεριβάλλοντος, ΕΚΠΑ
Δρ. «Κ. Σούκης, Ε.ΔΙ.Π.,Γεωλογίας & Γεωπεριβάλλοντος, ΕΚΠΑ

Οπτική κοκκομετρία σε αποθέσεις ξαφνικών πλημμυρών και ροών κορημάτων με χρήση επίγειων μέσων και ΣμηΕΑ

Greek

Optical granulometry in fast flood and stream flows deposits using ground-based means and drones

The purpose of this Msc thesis is to accomplish granulometry analysis in mapped, recent floods and/or debris flows. The study area is Mandra and more specifically the stream of Ag. Aikaterini, with sampling sites in Agios Ioannis and Katsimidi. The data were obtained through the UAVs (Unmanned Aerial Systems), but also by ground-based means, for analyzing the small fractions of granules.
Granulometry analysis will be taken place through Basegrain, Matlab-based software. BASEGRAIN combines photogrammetry and optical methods with intelligent algorithms, creating an automated object detection process. However, the program enables user interface (GUI) by converting the process to semi-automatic to improve the result.
The goal of this study is to distinguish three granular classes (fine, medium and thick grained), investigating the response of the software in different height as well as comparing the results with the already mapped data. At the same time, data from point images and orthophotomosaic are compared, for developing a wide mapping floods.

Science

Optical Granulometry Analysis, Basegrain, Mandra, flash flood

Yes

6

Yes

31

83

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https://pergamos.lib.uoa.gr/uoa/dl/object/2900040