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Full-Text Articles in Physical Sciences and Mathematics
Dynamics Of Wind-Driven Upwelling And Relaxation Between Monterey Bay And Point Arena: Local-, Regional-, And Gyre-Scale Controls, James M. Pringle, Edward P. Dever
Dynamics Of Wind-Driven Upwelling And Relaxation Between Monterey Bay And Point Arena: Local-, Regional-, And Gyre-Scale Controls, James M. Pringle, Edward P. Dever
Earth Sciences
In north and central California, equatorward winds drive equatorward flows and the upwelling of cold dense water over the shelf during the midspring and summer upwelling season. When the winds temporarily weaken, the upwelling flows between Point Reyes and Point Arena "relax,'' becoming strongly poleward over the shelf. Analytical and numerical models are used to describe the effect of alongshore variability of winds, bathymetry, and basin-scale pressure gradients on the strength of upwelling and its relaxation. Alongshore winds weaken to the south of Point Reyes, and the shelf becomes narrower from Point Reyes to Monterey Bay. Both of these lead …
Enhancement Of Wind-Driven Upwelling And Downwelling By Alongshore Bathymetric Variability, James M. Pringle
Enhancement Of Wind-Driven Upwelling And Downwelling By Alongshore Bathymetric Variability, James M. Pringle
Earth Sciences
Steady wind-driven flow along a shelf of changing width is described with a frictional barotropic model valid in the limit of small Rossby and Burger number. In these limits, an alongshore wind drives enhanced onshelf transport in a coastal ocean if the shelf widens downwind, and the change in shelf width only affects the flow in the direction of Kelvin wave propagation ("downwave'') from the change in shelf width. There is enhanced onshore transport of cold, nutrient-laden bottom water if the winds favor upwelling and the shelf narrows in the direction of Kelvin wave propagation. This enhanced transport extends a …
Cross-Shelf Eddy Heat Transport In A Wind-Free Coastal Ocean Undergoing Winter Time Cooling, James M. Pringle
Cross-Shelf Eddy Heat Transport In A Wind-Free Coastal Ocean Undergoing Winter Time Cooling, James M. Pringle
Earth Sciences
A steady state cross-shelf density gradient of a wind-free coastal ocean undergoing winter time cooling is found for cooling and geometries which do not vary in the along-shelf direction. The steady state cross-shelf density gradient exists even when the average density of the water continues to increase. The steady state density gradient dan be attained in less than a winter for parameters appropriate to the mid-Atlantic Eight. The cross-shelf eddy-driven buoyancy fluxes which cause this steady state gradient are found to depend critically on bottom friction and bottom slope, and the coastal polyna solutions of Chapman and Gawarkiewicz [1997] are …