Now showing items 1-3 of 3

  • The quasi-geostrophic ellipsoidal vortex model 

    Dritschel, David Gerard; Reinaud, Jean Noel; McKiver, William J (2004-04-25) - Journal article
    We present a simple approximate model for studying general aspects of vortex interactions in a rotating stably-stratified fluid. The model idealizes vortices by ellipsoidal volumes of uniform potential vorticity, a materially ...
  • Quasi-geostrophic shallow-water doubly-connected vortex equilibria and their stability 

    Plotka, Hanna; Dritschel, David Gerard (2013-05) - Journal article
    We examine the form, properties, stability and evolution of doubly-connected (two-vortex) relative equilibria in the single-layer ƒ-plane quasi-geostrophic shallow-water model of geophysical fluid dynamics. Three parameters ...
  • Quasi-geostrophic vortices in compressible atmospheres 

    Scott, Richard Kirkness; Dritschel, David Gerard (2005-05-10) - Journal article
    This paper considers the effect of an exponential variation in the background density field (as exists in compressible atmospheres) on the structure and dynamics of the quasi-geostrophic system, and compares the results ...