The aim of the TRAMAT cruise is to better understand the behavior of the fine sediment particles (< 63 μm) within a seabed composed of coarse and fine sediment particles. The acquired in situ data will allow improving the particle transport law computed in the hydro-sedimentary module of the MARS model developed at the IFREMER (France). MARS model can be used to predict dispersion, transport and transfer of pollutant compounds within a marine ecosystem. In situ seabed particle transport processes will be studied by monitoring current and particle dynamics closed to the water-sediment interface at 4 different locations and during a 24-hour cycle at each location. The monitoring will be done by deploying in situ instruments (mainly ADCP and DYSPI) and sampling sediment and water.
Philippe Laguionie (Cherbourg-Octeville Radioecology Laboratory)