The study area is a river dead-zone located at the confluence between the main channel and a cut-off meander.
Water velocities measured by acoustic Doppler current profiler (aDcp) during a flood were interpolated and depth-averaged.
The superposition of the velocity vectors and the bed elevation contours outlines the relationship between the recirculating flow and the river morphology.
The depth elevation model was imported into a matrix in Origin and plotted as a 'Contour Color Fill' plot.
Flow velocities were externally processed and then imported into a worksheet in Origin and plotted as a 'Vector XYAM' plot.
Both plots were then merged and superimposed.
Jérôme Le Coz is a PhD student in fluvial hydraulics and sediment transport. He is studying the impact of floods on the morphology of channels abandoned by rivers.
Jérôme Le Coz
Hydrology-Hydraulics Research Unit