The Gulf Stream and Its Frontal Structure: A Quantitative Representation
| Autor: | Timothy W. Kao |
|---|---|
| Rok vydání: | 1987 |
| Předmět: | |
| Zdroj: | Journal of Physical Oceanography. 17:123-133 |
| ISSN: | 1520-0485 0022-3670 |
| DOI: | 10.1175/1520-0485(1987)017<0123:tgsaif>2.0.co;2 |
| Popis: | The structure of the Gulf Stream Current is associated with the quasi-permanent density front in the western North Atlantic. The lighter mass of warmer but saltier water of the Sargasso Sea is separated from the slope water by inclined isopycnals that form the front. Recent satellite altimeter measurements have also revealed a well-defined sea-surface height change across the front. In this paper, a model of the Gulf Stream cross-sectional density and current structure is presented, using the complete dynamical and mass-conservation equations. The model postulates a forcing, at the interior ocean boundary, by a cross-stream ageostrophic circulation with inflow of light water in the upper ocean and a return flow at greater depths. The model Gulf Stream is found to develop after initial geostrophic adjustment of several inertial periods. In the quasi-steady state, the normalized structural results constitute a single representation of the structure of all Gulf Stream sections; i.e., all sections ar... |
| Databáze: | OpenAIRE |
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