Field Measurements of the Vertical Structure of Suspended Sediment

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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 | Flow measurement | Acoustic techniques | Sea floor | Suspended structures | Distribution functions |

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