Incipient Resuspension of Silt-Clay Sediment

by Nasser Talebbeydokhti, Oregon State Univ, Corvallis, OR, USA,
Peter C. Klingeman, Oregon State Univ, Corvallis, OR, USA,

Document Type: Proceeding Paper

Part of: Water for Resource Development


The laboratory study of incipient motion of fine-grained cohesive sediment under oscillatory flow, unidirectional flow and the combined effects of oscillatory and unidirectional flow is summarized. Objectives are (1) to determine the effects on the incipient motion of fine sediment due to the important flow parameters and (2) to derive quantitative relationships describing these effects. The field site on which laboratory studies are based is Sturgeon Lake, Oregon. Sturgeon Lake is a large, shallow, mud-bottomed lake within Sauvie Island, located at the confluence of the Willamette and Columbia Rivers and connected to them via the Gilbert River. The lake is subject to wind-generated waves, tidal flows, and filling-and-draining due to river hydrograph changes.

Subject Headings: Sediment transport | Silt | Lakes | Laboratory tests | Tides | Oscillatory flow | Rivers and streams | Oscillations

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