Prognostic Modeling Studies of the Keweenaw Current in Lake Superior. Part II: Simulation

Zhu, Jianrong; Chen, Changsheng; Ralph, Elise; Green, Sarah A.; Budd, Judith Wells; Zhang, Frank Y.
February 2001
Journal of Physical Oceanography;Feb2001, Vol. 31 Issue 2, p396
Academic Journal
ABSTRACT The Keweenaw Current, observed along the coast of the Keweenaw Peninsula in Lake Superior during July 1973, was simulated using a 3D, nonorthogonal coordinate transformation, primitive equation coastal ocean model. The model domain covered the entire lake with a high resolution of 250-600 m in the cross-shelf direction and 4-6 km in the alongshelf direction along the peninsula. The model was initialized using the monthly averaged temperature field observed in June 1973 and was run prognostically with synoptic wind forcing plus monthly averaged heat flux. Good agreement was found between model-predicted and observed currents at buoy stations near Eagle Harbon Comparison of the model results with and without inclusion of heat flux suggested that combined wind and heat fluxes played a key role in the intensification of the Keweenaw Current during summer months. The model-predicted relatively strong near-inertial oscillations occurred episodically under conditions...


Related Articles

  • The tilting instability with buoyant forcing in a two-dimensional viscous fluid. Soloviev, Guennadi I.; Shapiro, Vitali D. // Journal of the Atmospheric Sciences;9/15/96, Vol. 53 Issue 18, p2671 

    Investigates the tilting instability with thermal buoyancy included as a source supporting convection against viscous dissipation. Schematic conceptual diagram showing how a shear flow distorts convective cells into a tilted configuration; Instability threshold in the Rayleigh number versus...

  • Variable source regions of Denmark Strait and Faroe Bank Channel overflow waters. K�HL, ARMIN // Tellus: Series A;Aug2010, Vol. 62 Issue 4, p551 

    The pathways of the water that overflows the Greenland�Scotland Ridge and their source regions are studied with an ocean circulation model. Depending on the size of wind stress curl around Iceland, different water mass properties are found in the less dense fraction of the overflows on both...

  • Fluid flow during active oblique convergence: ASouthern Alps model from mechanical and geochem... Koons, P.O.; Craw, D.; Cox, S.C.; Upton, P.; Templeton, A.S.; Chamberlain, C.P. // Geology;Feb98, Vol. 26 Issue 2, p159 

    Presents observations on fluid flow during active oblique convergence in relation to a Southern Alps model. Detailed information on the observations; Reference to the Southern Alps; Details on mechanical forces and models; Other information.

  • A pattern emerges. Chown, Marcus // New Scientist;07/12/97, Vol. 155 Issue 2090, p34 

    Focuses on scientific efforts to formulate a theory of pattern formation in nature using fluid dynamics. Discovery of oscillons that form complex structures; Patterns formed by flow of granular materials; Formation of antiferromagnetic lattice; Analogy with solitons.

  • On the shear and curvature vorticity equations. Viudez, Alvaro; Haney, Robert L. // Journal of the Atmospheric Sciences;11/15/96, Vol. 53 Issue 22, p3384 

    Interprets tendency equations for shear and curvature vorticity as function of terms that modify speed and direction in a fluid element. Significance of anholonomic frame and directional derivatives; Discussion of previous formulations; Representation of relationships between kinematic and...

  • Analytical model of the 'tilting' instability. Rosenbluth, M.N.; Shapiro, V.D. // Physics of Plasmas;Feb94, Vol. 1 Issue 2, p222 

    Proposes an analytical model of the tilting instability that exhibits inverse cascade phenomenon, conserving both energy and enstrophy. View that tilting instability is an instability of convective motions two-dimensional ideal fluid transforming convection into sheared flow; Evolution of the...

  • Prediction of large-scale transition features in the wake of a circular cylinder. Braza, M.; Chassaing, P.; Minh, H. Ha // Physics of Fluids A;Aug90, Vol. 2 Issue 8, p1461 

    A direct numerical simulation of the viscous incompressible flow around a circular cylinder is carried out in the Reynolds number range 2000�10 000 by solving the two-dimensional time-dependent Navier�Stokes equations, using a pressure�velocity finite-volume method. Apart from the...

  • Plumes in Hele�Shaw cells. Amar, Martine Ben // Physics of Fluids A;Dec92, Vol. 4 Issue 12, p2641 

    A theoretical treatment of a thermal growing plume in a Hele�Shaw cell is presented. An explanation of why the experiment shows a cap similar to a Saffman�Taylor finger that occupies half the cell is presented. A boundary layer analysis, in two dimensions, reveals a selection mechanism...

  • Fractal characteristics of isoconcentration surfaces in plumes dispersing in the atmospheric... Yee, Eugene; Chan, R. // Physics of Fluids;Nov95, Vol. 7 Issue 11, p2715 

    Studies the geometrical properties of isoconcentration surfaces in a plume dispersing in the atmospheric surface layer using a generalized box-counting method applied to a limited random point set. Computation of the dimension spectra for the concentration level sets; Fractal nature of the...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics