A laboratory model of a cooled continental shelf
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.
Lentz, Steven J. (American Meteorological Society, 2008-06)Analyses of current time series longer than 200 days from 33 sites over the Middle Atlantic Bight continental shelf reveal a consistent mean circulation pattern. The mean depth-averaged flow is equatorward, alongshelf, and ...
Glacially generated overpressure on the New England continental shelf : integration of full-waveform inversion and overpressure modeling Siegel, Jacob; Lizarralde, Daniel; Dugan, Brandon; Person, Mark (John Wiley & Sons, 2014-04-29)Localized zones of high-amplitude, discontinuous seismic reflections 100 km off the coast of Massachusetts, USA, have P wave velocities up to 190 m/s lower than those of adjacent sediments of equal depth (250 m below the ...
Initial spread of 137Cs from the Fukushima Dai-ichi Nuclear Power Plant over the Japan continental shelf : a study using a high-resolution, global-coastal nested ocean model Lai, Zhigang; Chen, Changsheng; Beardsley, Robert C.; Lin, Huichan; Ji, Rubao; Sasaki, J.; Lin, Jian (Copernicus Publications on behalf of the European Geosciences Union, 2013-08-14)The 11 March 2011 tsunami triggered by the M9 and M7.9 earthquakes off the Tōhoku coast destroyed facilities at the Fukushima Dai-ichi Nuclear Power Plant (FNPP) leading to a significant long-term flow of the radionuclide ...