Stokes’ Settling and Chemical Reactivity of Suspended Particles in Natural Waters

  • Abraham Lerman
  • Devendra Lal
  • Michael F. Dacey
Part of the Marine Science book series (MR, volume 4)


Equations are given for the Stokes settling velocities of the following particle shapes: the sphere, oblate spheroid, prolate spheroid, circular cylinder, elliptic cylinder, disc, and hemispherical cap. Dissolution of calcareous and silicate particles settling through ocean water, based on literature data, is analyzed in terms of a model for dissolution rate independent of the particle surface area, and a model for dissolution rate dependent on a surface reaction. The settling of dissolving particles in the presence of a countercurrent of upwelling water may lead to formation of thin nepheloid layers. Settling of calcite crystals through a stratified water column is treated as a case of variable nucleation (production) rates, dissolution and agglomeration of crystals en route to the bottom. A stochastic model presented in the paper gives a reasonably simple method for treating transient transport of particles in a physically heterogeneous water column.


Water Column Drag Force Circular Cylinder Chemical Reactivity Suspended Matter 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Plenum Press, New York 1974

Authors and Affiliations

  • Abraham Lerman
    • 1
    • 2
  • Devendra Lal
    • 1
    • 2
  • Michael F. Dacey
    • 1
    • 2
  1. 1.Physical Research Laboratory (India)Northwestern UniversityUSA
  2. 2.Scripps Institution of OceanographyNorthwestern UniversityUSA

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