Qiu Z. F., Doglioli A. M., Carlotti François. (2014). Using a Lagrangian model to estimate source regions of particles in sediment traps. Science China : Earth Sciences, 57 (10), p. 2447-2456. ISSN 1674-7313.
Titre du document
Using a Lagrangian model to estimate source regions of particles in sediment traps
Science China : Earth Sciences, 2014,
57 (10), p. 2447-2456 ISSN 1674-7313
A Lagrangian model is used to evaluate source regions of particles collected in the sediment traps at the DYFAMED (Dynamique des Flux Atmospheriques en Mediterranee) station by tracking particles backwards from March 1 to August 31, 2001. The analysis suggests that source regions depend on the flow fields, the settling speed of the particles, and the deployment depths of the traps. Monthly variation is observed in the distribution patterns of source regions, which is caused by the currents. The source regions are located around the traps and up to hundreds of kilometers away. As the settling speed increases with the particle diameters, the distance to the source regions decreases. The vertical flux can be approximately estimated in 1D for the particles with diameters larger than 500 mu m. Furthermore, traps moored at various depths at the DYFAMED can collect particles that originated from different regions in the Ligurian Sea.
Plan de classement
Sciences fondamentales / Techniques d'analyse et de recherche [020]
;
Limnologie physique / Océanographie physique [032]
;
Géologie et formations superficielles [064]
