Author(s): Stephane Montreuil; Bernard Long
Linked Author(s):
Keywords: No Keywords
Abstract: X-Ray computed tomography (CT-Scanning) enables the measurement of the relative density of bedload and water column during sediment transport with volume element (voxel) of 0.6 x 0.6 x 0.6 mm within a 512 by 512 by 1500 pixels matrix producing a3D volumetric representation of a sand ripple. In this study, the architecture of sand ripple produced, by stationary flow inside a flume is constituted by several internal density stratification and hydraulics phenomena. Results give the density representation of sediment transport internal structure they present different points and zones inside the bedload and the suspended load giving a better representation of erosion, unpacking, deposition, avalanching and vortices phenomena inside sediment transport structures.
Year: 2009