Field Measurements of the Vertical Structure of Suspended Sediment

by B. van Hardenberg, Dalhouse Univ, Halifax, Canada,
A. E. Hay, Dalhouse Univ, Halifax, Canada,
Y. Sheng, Dalhouse Univ, Halifax, Canada,
A. J. Bowen, Dalhouse Univ, Halifax, Canada,



Document Type: Proceeding Paper

Part of: Coastal Sediments

Abstract:

The use of acoustic backscatter measurements to determine suspended sediment concentration gives a new view of the instantaneous sediment distribution as a function of height above the sea bed. Rapid sampling (at about 6 Hz) shows, in detail, the effect of individual waves on the concentration profiles. Following Nielsen (1979) the profiles are corrected to remove the effects of the wave orbital displacement. This allows the skew flux, a measure of the sediment transport associated with the Lagrangian mass transport, to be identified.

Subject Headings: Suspended sediment | Sediment transport | Wave measurement | Acoustics | Water waves | Flow measurement | Suspended structures

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