You are here:
DREDGED MATERIAL TRANSPORT AT DEEP-OCEAN DISPOSAL SITES
Citation:
Abdelrhman, M.A. AND E. Dettman. DREDGED MATERIAL TRANSPORT AT DEEP-OCEAN DISPOSAL SITES. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/A-93/294.
Description:
Assessment of environmental impact of dredged material disposal in deep ocean water calls for predictions of water column concentration, exposure time as well as the impacted area of the bottom (footprint). redictions based on vertical willing and horizontal advection of single particles ignore the effects of bulk properties of the disposed material, vertical and horizontal diffusion, and material dilution due to of ambient water during descent. his paper highlights the spatial and temporal changes in the particle exposure fields for the water column and bottom at a hypothetical disposal site within the two-day period following instantaneous release of barged dredged material. his model incorporates a proposed mechanism for differential internal mixing for various size classes, and a mechanistic approach to calculating detachment of material from the main cloud.