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Sunday, July 12, 2020 | History

2 edition of numerical study of the wind-driven transient circulation in a homogeneous ocean found in the catalog.

numerical study of the wind-driven transient circulation in a homogeneous ocean

W. Lawrence Gates

numerical study of the wind-driven transient circulation in a homogeneous ocean

by W. Lawrence Gates

  • 282 Want to read
  • 16 Currently reading

Published in [Santa Monica, Calif.] .
Written in English

    Subjects:
  • Ocean circulation -- Mathematical models.,
  • Wind-pressure.

  • Edition Notes

    Statement[by] W. L. Gates.
    Classifications
    LC ClassificationsAS36 .R28 no. 3455
    The Physical Object
    Pagination74 p.
    Number of Pages74
    ID Numbers
    Open LibraryOL4535860M
    LC Control Number77001719

    CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): In this paper, we derive rigorously a classical simplified model of ocean circulation, namely the so called homogeneous model of wind driven ocean circulation (see the monograph of J. Pedlosky [19]) and two of its possible boundary layer behavior, namely Munk layers and Stommel layers. Numerical models of the large‐scale circulation of the oceans have developed into a useful tool for the interpretation of oceanographic data and the planning of new observational programs. Idealized numerical models with simplified geometry and physics have extended the analytic theory of the wind‐driven ocean circulation into the range in which inertial effects determine .

    The first systematic study of the ocean's surface currents and winds was done by. wind-driven currents are confined to the upper _____ m of the ocean surface. The large-scale ocean circulation gyres mirror the Earth's long-term average planetary-scale winds with the subtropical gyres centered at approximately _____ latitude. Observational evidence suggests that the halocline dynamics of the Beaufort Gyre are to a large extent governed by the anticyclonic atmospheric winds that drive the large-scale gyre circulation—and to a lesser extent due to the availability of Arctic freshwater sources (Proshutinsky et al. ).The surface stress results largely from the sea ice drag and .

    From the time-dependent numerical solutions of a wind-driven homo-geneous ocean model, a negative lateral eddy viscosity of the order of 6 2 -1 10 cm sec is estimated in the basin interior, where the flow is dominated by transient Rossby waves. These waves produce a systematic. The Effects of Western Coastal Orientation on Rossby-Wave Reflection and the Resulting Large-Scale Oceanic Circulation The Ekman Vertical Velocity in an Enclosed Beta-Plane Ocean A Numerical Study of Transient Rossby Waves in a Wind-driven Homogeneous Ocean.


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Numerical study of the wind-driven transient circulation in a homogeneous ocean by W. Lawrence Gates Download PDF EPUB FB2

The time-dependent primitive equations for a shallow homogeneous ocean with a free surface are solved for a bounded basin on W. Gates,A numerical study of transient Rossby waves in a wind-driven homogeneous ocean, J.

Atmos G. Veronis,Wind-driven ocean circulation-part I. Linear theory and perturbation analysis, Deep-Sea Cited by: 3. The time-dependent primitive equations for a shallow homogeneous ocean with a free surface are solved for a bounded basin on the sphere, driven by a steady zonal wind stress and subject to lateral viscous dissipation.

These are the vertically integrated equations for a free-surface model, and are integrated to 60 days from an initial state of rest by an explicit centered-difference Cited by: 3. The Circulation of the World Ocean: A Numerical Study. Part I, A Homogeneous Model Article (PDF Available) in Journal of Physical Oceanography 2(4) October with 34 Reads.

W. GATES, A numerical study of transient Rossby-waves in a wind-driven homogeneous ocean, J. Atmos. Sei. 25 (), R. FJ0RTOFT, On the changes in the spectral distribution of kinetic energy for two-dimensional, nondivergent flow, Cited by: 5. ENVIRONMENTAL SECURITY: Numerical Studies of Transient Planetary Circulations in a Wind-Driven Ocean on the Sphere W.

Lawrence Gates This rrararch is supported by ihr Advancrd Rrsrarch Projects Agency under Contt tct No. DAHC15 67 C Views or conclusions contained in this study should not beCited by: 1.

EQUATIONS OF WIND-DRIVEN CIRCULATION The simplest model of steady, wind-driven ocean circulation is based on the dynamics of a homogeneous layer of water on a f-plane. The transfer of momentum to the basin from the wind is assumed to occur through a thin mixing-layer at the ocean surface and may be transferred to the ocean bottom in an.

Homogeneous Models of the Wind-Driven Oceanic Circulation. Authors; Authors and affiliations Beardsley, R. and Robbins, K. The “sliced cylinder” laboratory model of the wind-driven ocean circulation. Part 1.

Steady forcing and topographic Rossby wave instability. A study of topographic effects. In Numerical Models of Ocean. A numerical model of the wind-driven transient ocean circulation in the Middle Atlantic Bight is described. The model incorporates realistic topography and covers the continental shelf between the coast and the m isobath from Cape Hatteras to the southern tip of Nova Scotia.

A study is made of the wind-driven circulation of a two-layer ocean within a square basin, with a view to describing the observed separation of western boundary currents. Wind-driven ocean circulation--Part 2. Numerical solutions of the non-linear problem 35 The form of the Jacobian, J(~b n, ~n), which was used has two advantages.

In the first place it conserves both vorticity (corresponding) to fo fo v. V~ dx dy = O) and kinetic energy (corresponding to f0 ;0 ~v - V~ dx dy = 0). Secondly, at points. A study is made of the wind‐driven circulation in a homogeneous rectangular ocean under the influence of surface wind stress, linearised bottom friction, horizontal pressure gradients caused by a variable surface height, and Corlolie force.

homogeneous, two-dimensional ocean confined between given boundaries where the stream-function vanishes. Even though the model is a very crude description of wind-driven ocean circulation (it leaves out the effects of topographic and baroclinic processes), it is a worthwhile model to pursue--at least up to a point.

evolved, with recent interest focusing on the more complicated transient circula- tions generated by low-frequency time-dependent wind stresses. A number of different laboratory models have concurrently been developed to isolate and illustrate the more important features of the wind-driven ocean circulation (see GreenspanQ ).

STUDY OF THE WIND-DRIVEN OCEAN CIRCULATION 3 I3 similar selsyn motor linked to the basin shaft by a rubber sheave ratio at the basin shaft was made 1/3 and the sheave ratio at the Dove prism 6/1, so that the Dove prism revolves at one-half of the basin rate regard.

Ocean: Wind-driven circulation #2 ATM • To simplify the ocean circulation, let’s consider the vertical integration of the momentum equation.

fu+ 1 Homogeneous fluid (so density is constant) 3. No vertical flow at the surface. Munk, W. & Carrier, G. The wind-driven circulation in ocean basins of various shapes. Tellus, 2, Sverdrup, H. Wind-driven currents in a baroclinic ocean; with application to the equatiorial currents of the eastern Pacific.

The objective of the present study is to clarify the baroclinic structure of the wind-driven circulation in the South Pacific Ocean. The large-scale circulation of this ocean has been previously documented by Reid (, ), Warren (), and de Szoeke ().

While de Szoeke’s study highlighted the main features of the. We study the low-frequency variability of this wind-driven, double-gyre circulation in mid-latitude ocean basins, subject to time-constant, purely periodic and more general forms of time-dependent wind stress.

Both analytical and numerical methods of dynamical systems theory are applied to the PDE systems of interest. The large-scale, near-surface flow of the mid-latitude oceans is dominated by the presence of a larger, anticyclonic and a smaller, cyclonic gyre.

The two gyres share the eastward extension of western boundary currents, such as the Gulf Stream or Kuroshio, and are induced by the shear in the winds that cross the respective ocean basins.

Cox, M D., A numerical study of Somali Current eddies. Journal of Physical Oceanography, 9(2), Abstract A three-dimensional numerical ocean model is used to study the transient response of the western boundary region of a tropical ocean to the sudden onset of winds parallel to the boundary.

OCLC Number: Description: vii, pages: diagrams ; 25 cm: Contents: Wind-driven currents in a baroclinic ocean; with application to the equatorial currents of the eastern Pacific / H.U. Sverdrup --The westward intensification of wind-driven ocean currents / H. Stommel --On the wind-driven ocean circulation / W.H.

Munk --The wind-driven circulation in ocean .Wind-driven circulation. Wind stress induces a circulation pattern that is similar for each ocean. In each case, the wind-driven circulation is divided into gyres that stretch across the entire ocean: subtropical gyres extend from the equatorial current system to the maximum westerlies in a wind field near 50° latitude, and subpolar gyres extend poleward of the .It proceeds by approximating the gravitational potential exterior to the earth, caused by the tidal bulge, by that of a system of point masses on the ocean surface.

For the sake of flexibility, separate computational schemes are described for the potential and the perturbing acceleration, the former being independent of the latter.