REVISITING THE ROLE OF AGGREGATION IN THE SETTLING OF COHESIVE FLOCS IN THE MARINE ENVIRONMENT

Ashish J. Mehta, William H. McAnally, Farzin Samsami, Andrew J. Manning

Abstract


The settling velocity is the single-most important property governing the transport of cohesive flocs in the marine environment. In that regard, the instantaneously changing diameter, density and shear strength of flocs are the defining properties which distinguish floc transport from that of cohesionless particles. Thus, consideration of aggregation, which includes the dynamics of floc growth and breakup due to floc-floc collisions as well as flow-induced shearing of flocs, is a critical component of floc transport modeling.

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References


Manning, A.J. (2001). A study of the effects of turbulence on the properties of flocculated mud, PhD Thesis, Univ. of Plymouth, Plymouth, UK.

McAnally, W.H. (1999). Transport of fine sediments in estuarial waters, PhD Thesis, Univ. of Florida, Gainesville.

Manning, A.J., Schoellhamer, D.H. (2013). Factors controlling floc settling velocity along a longitudinal estuarine transect, Mar. Geol., doi:10.1016/j.margeo.2013. 06.018.




DOI: https://doi.org/10.9753/icce.v36.sediment.17