CAPTURE (Characterisation And Parameterisation of TURbidity in Estuaries under anthropogenic and climatic pressures, 2021-2023) is a project funded by the French Office for Biodiversity (OFB) in the framework of the Inter-Estuary Mission (MIE) programme. The overarching goal of the project is to move toward a global conceptualisation of sediment dynamics in tidal estuaries, at time scales of events to years. Based on in situ monitoring networks associated with numerical modelling approaches, we aim at characterising key sediment behaviours, as Estuarine Turbidity Maximum (ETM) and sediment (mud/sand) fluxes. This ambitious challenge will be tackled by comparing the largest and contrasted French estuaries (Gironde, Loire and Seine) with worldwide estuarine systems to generalize the characterization at a larger scale. More specifically, CAPTURE objectives are to address the following questions:

  1. What are the influences of estuarine key parameters (river supply, tide, waves, morphology, sediment type, dredging activities) on ETM characteristics (mass, location, formation/decay)? Do the systems have a maximum capacity to maintain sediment in suspension?
  2. What are the net sediment transfers (i.e. import and export) between the upstream continental catchment areas and downstream coastal seas (i.e. along the land-sea continuum), as well as between the main channel and the lateral intertidal flats?

CAPTURE outcomes will provide a better understanding why suspended sediment concentrations strongly differ in tidal estuaries. Indicators of potential turbidity levels will be derived for helping in evaluating the good environmental status of estuarine transitional waters in the context of the European Water Framework Directive (WFD). In addition, as fine particles are the main vectors of nutrients and pollutants along the land-sea continuum, addressing such questions will provide better estimates of bio-physical matter transfers at the estuary-sea interface.

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Campaign BATHY_DELTA_RHONE 2023 news

Published on 4 october

The aim of the campaign BATHY_DELTA_RHONE 2023 is to update the bathymetry of the Rhöne prodelta as part of the EC2CO DELTA RHONE project.

Ecole d’été et colloque INTERCOH - Incheon, Corée

Published on 21 september

From 13 to 22 September 2023, DHYSED and the LER-AR will be in Incheon, Korea, to take part in the summer school and present research work in sediment dynamics.


Published on 4 september

Voici quelques nouvelles de la campagne BATHY DELTA RHONE!