Record Display for the EPA National Library Catalog

RECORD NUMBER: 40 OF 66

OLS Field Name OLS Field Data
Main Title Dredged Material Transport at Deep-Ocean Disposal Sites.
Author Abdelrhman, M. A. ; Dettmann, E. H. ;
CORP Author Computer Sciences Corp., Narragansett, RI. ;Science Applications International Corp., Narragansett, RI.;Environmental Research Lab., Narragansett, RI.
Publisher 1993
Year Published 1993
Report Number EPA-68-01-7365; EPA/600/A-93/294;
Stock Number PB94-135191
Additional Subjects Sediment transport ; Dredging ; Solid waste disposal ; Ocean environments ; Deep water ; Sites ; Environmental impacts ; Barges ; Mathematical models ; Wildlife ; Aquatic animals ; Advection ; Concentration(Composition) ; Diffusion ; Mixing ; Settling ; Reprints ;
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB94-135191 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 05/14/1994
Collation 17p
Abstract
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). Predictions based on vertical settling 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 entrainment of ambient water during descent. The paper highlights the spatial and temporal changes in the particle exposure fields for the water column and bottom at a hypothetical deep-ocean disposal site within the two-day period following instantaneous release of barged dredged material. The 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.