Accession Number : ADA329223

Title :   Deep Ocean Relocation of Dredged Material, Transporting, and Emplacement.

Descriptive Note : Conference proceedings,

Corporate Author : NAVAL RESEARCH LAB STENNIS SPACE CENTER MS MARINE GEOSCIENCES DIV

Personal Author(s) : Valent, P. J. ; Young, D. K. ; Green, A. W.

PDF Url : ADA329223

Report Date : JUN 1997

Pagination or Media Count : 22

Abstract : Each year, 400 million cubic yards of sediment are dredged in the United States of which 3 to 5 percent is polluted and cannot be used beneficially or returned to the environment near dredging sites. Disposal of this polluted, dredged material is a national problem. One solution to this problem is to relocate and isolate polluted dredged material to the seafloor of the abyssal ocean, considered to include those depths greater than 300 m. SimDOR, a project sponsored by the Defense Advanced Research Projects Agency, focused on simulation of the scientific and technical issues involved with this disposal option. SimDOR, which stands for Simulation of Deep Ocean Relocation of Dredged Material, concentrated primarily on sites of the abyssal seafloor of the North Atlantic Ocean and considered dredged material coming from to the eastern seaboard of the United States. Results from the SimDOR project are also generally applicable to west coast and Gulf of Mexico ports. The SimDOR project took advantage of recent advances in numerical modeling capabilities, simulation concepts, and visualization technology. Simulations identified are predicted effects of this disposal option including the dredging and relocation procedures as well as the resulting environmental impact. Simulation of the entire process from dredging through long-term impact on the abyssal environment allowed engineers, scientists. environmentalists, and the public an opportunity to study and understand all aspects of this option. Systems to dredge sediments, load containers, transport them to the ocean site, and ensure their safe descent to the abyssal seafloor were designed, simulated and evaluated.

Descriptors :   *ENVIRONMENTAL IMPACT, *WATER POLLUTION, *EMPLACEMENT, *DREDGED MATERIALS, *OCEAN WASTE DISPOSAL, *DEEP OCEANS, MATHEMATICAL MODELS, SIMULATION, UNITED STATES, COASTAL REGIONS, CONTAINERS, RESPONSE(BIOLOGY), WEST(DIRECTION), NORTH ATLANTIC OCEAN, ABYSSAL ZONES, DREDGING, OCEAN BOTTOM.

Subject Categories : Hydrology, Limnology and Potamology
      Water Pollution and Control

Distribution Statement : APPROVED FOR PUBLIC RELEASE