COASTAL DISPERSION OF POLLUTANTS

Turbulent eddies of different sizes control the far field of pollutants discharged to the marine environment. For the fine turbulence and regular advection, the validity of the local isotropy law is considered, and it is shown how the shore, circulation cells, multiple energy inputs, velocity gradients, waves, and other factors modify this law in the coastal zone. A model of the dispersive effects due to wave-current interactions is proposed and a formula is given for the spectral eddy diffusivity due to waves and currents. A solution of the steady-state diffusion equation has been derived for a fairly general case of exponential velocities and eddy diffusivities. By the Fourier transform, this solution has been used to embody the effect of mesoscale eddies, which destroy the aforementioned regular spreading patterns. Among other tools, a step-by-step procedure is proposed as a combination of fine turbulence and mesoscale effects.

• Corporate Authors:

  American Society of Civil Engineers

  345 East 47th Street
  New York, NY  United States  10017-2398
• Authors:
  • Zeidler, R B
• Publication Date: 1976-5

Media Info

• Features: References;
• Pagination: p. 235-254
• Serial:
  • Journal of Waterways, Harbors & Coast Eng Div
  • Volume: 102
  • Issue Number: 2
  • Publisher: American Society of Civil Engineers

Subject/Index Terms

• TRT Terms: Air pollution; Atmospheric diffusion; Coastal engineering; Control; Diffusion (Optics); Oceans; Sewage treatment; Sludge (Deposit); Waste disposal; Wastewater; Water pollution
• Old TRIS Terms: Dispersion; Ocean pollution; Sludge disposal; Water pollution (Sewage)
• Subject Areas: Environment; Marine Transportation;

Filing Info

• Accession Number: 00147765
• Record Type: Publication
• Source Agency: Engineering Index
• Report/Paper Numbers: ASCE 12150
• Files: TRIS
• Created Date: May 11 1977 12:00AM