SEDIMENT DISPERSAL ON THE N.S.W. CONTINENTAL SHELF

Sediment Movement on the Continental Shelf near Washington and Oregon.

The nuclides zinc-65 and cobalt-60 associated with river-borne particulate matter are incorporated in sediment on the Continental Shelf near the Colum- ia River. Changes in the relative concentrations of zinc-65 and cobalt-60 and in the ratio of the activity of zinc-65 and cobalt-60 suggest that radioactive sediment moves northward 12 to 30 kilometers per year along the shelf and 2.5 to 10 kilo...

Lagrangian circulation on the Southeast US Continental Shelf: Implications for larval dispersal and retention

Lagrangian characterization of continental shelf circulation provides estimates of the retention and transport of particulate and dissolved substances. In this paper, we quantify the retentive characteristics of the Southeast US Continental Shelf by comparing observed and numerical (modeled) drifters released throughout 2000 and 2001. Agreement between the observed and computed drifter trajecto...

Drilling Productivity on the Norwegian Continental Shelf

Recently, we have seen falling oil prices combined with sticky costs at a high level in the petroleum industry. This cause cost cuts and project postponements, thus challenging reserve replacement of oil companies and security of supply for consumers. Costs are particularly high for drilling. High rig rates are obviously important. In new contracts for high-spec semi rigs on the Norwegian Conti...

Monaco: the shallow continental shelf.

Three-Dimensional Modeling of Sediment Trapping and Dispersal on River- Influenced Continental Shelves

Many of the processes that transport sediment in coastal seas (wave/current resuspension, wind-, tidal-, and buoyancy-forced currents) are included in a three-dimensional, numerical model that has been applied to the Eel River shelf, northern California (Harris, Geyer and Signell, 2000). This accurately estimates the volume of sediment deposited on the shelf by floods of the Eel River, but pred...