Analysis of Transport Processes on Ocean Disposal Mound

by Gregory L. Hartman, Hartman Associates Inc, Seattle, United States,
Andrea Ogston, Hartman Associates Inc, Seattle, United States,
Mark Hanson, Hartman Associates Inc, Seattle, United States,

Document Type: Proceeding Paper

Part of: Coastal Sediments


Disposal site 'F', an ocean disposal site for dredged sediments from Coos Bay, Oregon was designed to be a dispersive site. The site has not demonstrated high dispersive characteristics, with a mound growth equivalent to 70% of sediment disposed at the site over the past ten years. Sediment grain size, wave conditions and rate of sediment disposal contribute to the mound stabilization. A correlation exists between the disposal mound slope and annual decrease in mound elevation. Empirical estimate of the mound growth is based on shear stress theory for bedload transport and linear wave theory for near bed velocities.

Subject Headings: Ocean engineering | Shear stress | Wave velocity | Sediment transport | Bays | Correlation | Dredging | Water flow | Oregon | United States

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