Unit:
Κατεύθυνση Γεωλογική ΩκεανογραφίαLibrary of the School of Science
Supervisors info:
1. Ευελπίδου Νίκη, Καθηγήτρια, Τμήμα Γεωλογίας και Γεωπεριβάλλοντος, ΕΚΠΑ (Επιβλέπουσα)
2. Καρκάνη Άννα, ΕΔΙΠ, Τμήμα Γεωλογίας και Γεωπεριβάλλοντος, ΕΚΠΑ
3. Sabatier François, Associate Professor, Department of the Geography-Planning-Environment, Aix-Marseille University (AMU)
Original Title:
Study of coastal morphodynamics in Νavarino Bay (Pylos, Peloponnese, Greece)
Translated title:
Study of coastal morphodynamics in Νavarino Bay (Pylos, Peloponnese, Greece)
Summary:
Coastal areas, as dynamic interfaces between land and sea, are increasingly vulnerable to natural and anthropogenic pressures, such as erosion and climate change. This thesis investigates the role of Posidonia oceanica meadows in mitigating coastal erosion within Navarino Bay, Greece, employing the MIKE 21/3 Coupled Model FM for hydrodynamic and morphodynamic simulations. The study compares two scenarios: one with Posidonia oceanica present and another without, to assess its impact on sediment stability and shoreline protection.
Field data, including bathymetric and coastal morphology metrics, were integrated with wind and wave statistics from the Poseidon system. Advanced geospatial tools (ArcGIS pro) and numerical modeling were used to simulate wave dynamics, current speeds, and sediment transport over a one-year period. The findings indicate that P. oceanica significantly reduces current velocities and wave energy, leading to enhanced sediment stabilization and reduced erosion rates in vegetated areas. Conversely, its absence exacerbates hydrodynamic forces, increasing erosion and sediment resuspension.
This research highlights the critical ecological and protective functions of P. oceanica, advocating for its preservation as a nature-based solution to coastal management challenges. The results underscore the need for sustainable practices to maintain the integrity of Mediterranean seagrass meadows amid rising environmental pressures.
Main subject category:
Science
Keywords:
coastal morphodynamics, coastal erosion, coastal zone, Posidonia oceanica, coastal modelling
Number of references:
211
File:
File access is restricted until 2025-07-30.
Διπλωματική_Αρβανίτη_Ιωάννα.pdf
2 MB
File access is restricted until 2025-07-30.
