On Coastal Trapped Waves At Low Latitudes In A Stratified Ocean
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Author | : Richard Dennis Romea |
Publisher | : |
Total Pages | : 506 |
Release | : 1982 |
Genre | : Ocean waves |
ISBN | : |
The response on the continental shelf of a baroclinic ocean to driving by an alongshore coastal wind stress and by barotropic and baroclinic wind forced interior motions is studied as a function of latitude. The relative excitation of continental shelf waves and internal Kelvin waves is studied. The response of a rotating stratified ocean with a vertical boundary, forced at the surface by an alongshore coastal wind stress, shows vertically propagating subinertial motions. Several examples which illustrate the basic properties of the response are presented. Changes in amplitude and frequency with depth are predicted. Components that decay with depth from the surface and components that represent coastal internal Kelvin waves with negative vertical group velocity and upward phase propagation are forced. The effect of bottom Ekman layer friction and slope topography on free internal Kelvin waves is examined, using both a steep and weak slope model. The steep slope represents the low latitude case while the weak slope represents the mid-latitude case. There are substantial differences between the results from the two models. Free waves are frictionally damped and offshore and vertical phase shifts are induced by friction, as well as an onshore flow. Topography induces changes to the wave frequency and alongshore phase speed. The modal amplitude is altered and an onshore flow is induced. Sea level and current velocity data from the equator to 17°S on the west coast of South America show that low frequency (0.1-0.2 cpd) fluctuations propagate poleward with phase speeds similar to those predicted for first mode baroclinic Kelvin waves. The sea level and currents are coherent and approximately 1800 out of phase. The waves do not appear to be the result of local atmospheric forcing. Empirical orthogonal functions show that the alongshore and vertical structure of alongshore velocity is consistent with first mode internal Kelvin waves.
Author | : |
Publisher | : |
Total Pages | : 7 |
Release | : 2001 |
Genre | : |
ISBN | : |
Coastal waves and wave-generated mean flows are studied in a stratified, rotating laboratory and numerical model oceans. Waves trapped to the coast are generated by time-dependent flow over a sloping and irregular bottom. Flow resulting from oscillatory flow over a sloping bottom, both with and without stratification, and with and without additional topographic features is examined. The wave-driven flow is as important as frictionally driven flow for wide range of parameters relevant to the coastal ocean.
Author | : |
Publisher | : |
Total Pages | : 876 |
Release | : 1987 |
Genre | : Electronic journals |
ISBN | : |
Author | : Kevin Austin Samuel Hays |
Publisher | : |
Total Pages | : 102 |
Release | : 1993 |
Genre | : California Current |
ISBN | : |
Author | : Ferit Bingel |
Publisher | : Food & Agriculture Org. |
Total Pages | : 84 |
Release | : 1993 |
Genre | : Nature |
ISBN | : 9789251033920 |
Author | : Albert Eide Parr |
Publisher | : |
Total Pages | : 1014 |
Release | : 1985 |
Genre | : Marine biology |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : 1460 |
Release | : 1991 |
Genre | : Aeronautics |
ISBN | : |
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Author | : Adrian E. Gill |
Publisher | : Elsevier |
Total Pages | : 683 |
Release | : 2016-06-03 |
Genre | : Science |
ISBN | : 1483281582 |
Atmosphere-Ocean Dynamics deals with a systematic and unified approach to the dynamics of the ocean and atmosphere. The book reviews the relationship of the ocean-atmosphere and how this system functions. The text explains this system through radiative equilibrium models; the book also considers the greenhouse effect, the effects of convection and of horizontal gradients, and the variability in radiative driving of the earth. Equations in the book show the properties of a material element, mass conservation, the balance of scalar quantity (such as salinity), and the mathematical behavior of the ocean and atmosphere. The book also addresses how the ocean-atmosphere system tends to adjust to equilibrium, both in the absence and presence of driving forces such as gravity. The text also explains the effect of the earth's rotation on the system, as well as the application of forced motions such as that produced by wind or temperature changes. The book explains tropical dynamics and the effects of variation of the Coriolis parameter with latitude. The text will be appreciated by meteorologists, environmentalists, students studying hydrology, and people working in general earth sciences.
Author | : |
Publisher | : |
Total Pages | : 960 |
Release | : 1981 |
Genre | : Mechanics, Applied |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : 418 |
Release | : 1980 |
Genre | : Marine meteorology |
ISBN | : |