A laboratory model of a cooled continental shelf
Whitehead, John A.
Frazel, Robert E.
MetadataShow full item record
A laboratory model of wintertme cooling over a continental shelf has a water surface cooled by air in an annular rotating tank. A flat shallow outer "continental shelf" region is next to a conical "contiental slope" bottom and a flat "deep ocean" center. The shelf flow consists of cellular convection cells descending into a region with very complicated baroclinic eddies. Extremely pronounced fronts are found at the shelf break and over the slope. Associated with these are sizable geostrophic currents along the shelf and over shelf break contour. Eddies are particularly energetic there. Cooling rate is compared with temperature difference between "continental shelf" and "deep ocean". Scaling considerations produce an empirical best fit formula for temperature difference as a function of cooling rate. This produces a relatively straight regression line over a wide range of rotation rates, shelf depths and cooling rates. If this formula is valid for the ocean, water over continental shelves will be much colder due to constraints imposed by rotation of the earth than if the fluid were not rotating.
Showing items related by title, author, creator and subject.
ten Brink, Uri S.; Schneider, Christopher; Johnson, Aaron H. (American Geophysical Union, 1995)Reconstruction of past ice-sheet fluctuations from the stratigraphy of glaciated continental shelves requires understanding of the relationships among the stratal geometry, glacial and marine sedimentary processes, and ...
Analysis of apparent optical properties and ocean color models using measurements of seawater constituents in New England continental shelf surface waters Green, Rebecca E.; Sosik, Heidi M. (American Geophysical Union, 2004-03-17)We used budgets of absorption (a), scattering (b), and backscattering (bb) for particles and chromophoric dissolved organic matter (CDOM) to investigate sources of seasonal variations in apparent optical properties (AOPs) ...
A continental shelf bottom boundary layer model : the effects of waves, currents, and a movable bed Glenn, Scott M. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1983-01)A simple model for the bottom boundary layer on the continental shelf is presented. The governing equations are developed for a stratified, turbulent Ekman layer in a combined wave and current flow over a moveable sediment ...