Characterization of Cohesive Sediment Properties and Transport Processes in Estuaries

  • Ashish J. Mehta
Part of the Lecture Notes on Coastal and Estuarine Studies book series (COASTAL, volume 14)

Abstract

Important factors characterizing cohesive sediment in estuarial transport are described with reference to measurement of appropriate parameters. Two categories of measurement are required — those for characterizing the physico-chemical properties of the sediment and the fluid, and those for quantifying the various relationships governing the transport processes. Sediment properties are specified by the grain size, mineralogical composition, organics and the cation exchange capacity. Fluid properties include its ionic composition, pH and temperature. In addition, bed density and rheologic parameters must be measured.

Transport parameters for settling and deposition, consolidation and erosion are determined through a combination of prototype and laboratory measurements. The state-of-the-art is such that, using these parameters, model prediction of “first order” accuracy can be achieved. Further effort is required in understanding the behavior of high density suspensions under currents as well as waves. The bed stabilizing influence of resistive microbial films is an important factor which as well requires quantification through additional investigation.

Keywords

Clay Sedimentation Silt Advection Hunt 

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Copyright information

© Springer-Verlag New York, Inc. 1986

Authors and Affiliations

  • Ashish J. Mehta
    • 1
  1. 1.Coastal and Oceanographic Engineering DepartmentUniversity of FloridaGainesvilleUSA

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