- TI'FOND
- VIMOG 1 & 2
TI’FOND project
Hydro-sedimentary dynamics of the shallow waters in the vicinity of the Guadeloupe harbour (GPM)
Project managers : Franck Dolique (BOREA – Université des Antilles) & Mouncef Sedrati (LGO-UBS)
Project leaders : BOREA MHNN & LGO UMR CNRS 6538 – UBS
Funding : LabEx DRIIHM (Dispositif de Recherche Interdisciplinaire sur les Interactions Hommes-Milieux)
Presentation
The implementation of heavy port infrastructures systematically induces a certain number of functional impacts on its immediate environment. This is the case of the hydrodynamics and especially current modifications generated by the construction of piers and docks.
The port of Guadeloupe is no exception to the rule and its establishment has contributed to significantly modify the marine environment of the northern part of the bay of Petit cul-de-sac Marin.
The Jarry pier, located at the outlet of the Salt River, has certainly contributed to modify the natural hydrodynamic flows. The access channel to the port, fitted out to receive very large tonnage ships (container ships, ore carriers...) has undoubtedly generated a priority channeling of currents and induced effects on the immediate marine and coastal environment (silting zones, erosion zones, sedimentary flows, sedimentary reorganization...).
The study aims to identify the main impacts of the port infrastructures on the immediate coastline and the shallow waters of the northern part of the bay of Petit Cul-de-sac Marin, and to evaluate the effects of the port channel on the nearby submarine sedimentary dynamics, leading to the implementation of a protocol for the observation of these dynamics.
Experimental device of the TI'FOND project
Preparation for the deployment of an Aquadopp Profiler on the edge of the access channel to the port (May 2018)
Shallow water (Caye) at Grand Cul-de-Sac Marin
TI'FOND project partners
Guadeloupe Port Caraïbes
VIMOG 1 & 2 projects
Video Monitoring for Guianese beach Morphodynamics and Management
Project managers : Mouncef Sedrati (LGO-UBS)
Project leaders : LGO UMR CNRS 6538 – Pôle Vannetais - UBS
Funding : CNRS – PIG (PEPINIERE INTERDISCIPLINAIRE DE GUYANE)
Presentation
The management of these sensitive and vulnerable coastal areas in French Guiana requires an in-depth understanding of the high-frequency dynamics of beaches in interaction with coastal development and coastal risks. The sandy beaches in French Guyana, which are constantly changing, represent an important regional asset in terms of tourism and the economy, but also in terms of ecology, particularly as nesting sites for emblematic species of marine turtles. The VIMOG “VIdeo MOnitoring for Guianese beach morphodynamics and management” project allowed to set up the first high-frequency video monitoring system haute fréquence of intertidal beach morphodynamics in Kourou (KVS : Kourou Video Station)in partnership with the LEEISA USR 3456 and the DEAL - French Guiana.
KVS : Kourou Video Station
Actions
The VIMOG-1 Project proposed the experimentation of a high-frequency video monitoring device of the Guyanese coastline carried out through three main actions :
• Choice of the site and implementation of the video monitoring system,
• Securing the implementation and power supply of the system,
• First data processing tests.
The main objectives of the VIMOG-2 Project are as follows :
• L’automatisation des analyses des images vidéo par la création d’une « automatic treatment box » susceptible de générer des produits scientifiques finalisés (position de la ligne de maximum run-up, profils topographiques, MNT (Modèles numériques de terrain) topographiques, imagerie orthorectifiée) ;
• The evaluation of the coastal developments (geotextile structures) on the Kourou site the dissemination of the results to the DEAL and the local authority (also for the results of the KVS) in order to elaborate recommendations and recommendations for a sustainable management of the beach.
Detection of the coastline (blue line) and the Max and Min runup lines on the beach of Kourou
VIMOG project partners
- DEAL – Guyane
- LEEISA USR 3456 - Guyane
- Observatoire de la Dynamique Côtière - Guyane
- University of Lisbonne - Portugal
