Dynamics of nonstationary dipole vortices

J.S. Hesthaven, Jens-Peter Lynov, J. Nycander

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    The dynamics of tilted dipole vortices in the equivalent barotropic vorticity (or Hasegawa-Mima) equation is studied. A recent theory is compared with numerical simulations and found to describe the short time behavior of dipole vortices well. In the long time limit the dipoles are found to either disintegrate or relax toward a steady eastward propagating dipole vortex. This relaxation is a consequence of nonviscous enstrophy loss by the dipole vortex.
    Original languageEnglish
    JournalPhysics of Fluids
    VolumeA 5
    Issue number3
    Pages (from-to)622-629
    ISSN1070-6631
    DOIs
    Publication statusPublished - 1993

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