On the concentration of near-inertial waves in anticyclones

Eric Danioux, Jacques Vanneste, Oliver Bühler

Research output: Contribution to journalArticle

Abstract

An overlooked conservation law for near-inertial waves (NIWs) propagating in a steady background flow provides a new perspective on the concentration of these waves in regions of anticyclonic vorticity. The conservation law implies that this concentration is a direct consequence of the decrease in spatial scales experienced by an initially homogeneous wave field. Scaling arguments and numerical simulations of a reduced-gravity model of mixed-layer NIWs confirm this interpretation and elucidate the influence of the strength of the background flow relative to the dispersion.

Original languageEnglish (US)
Pages (from-to)R21-R212
JournalJournal of Fluid Mechanics
Volume773
DOIs
StatePublished - May 14 2015

Keywords

  • geophysical and geological flows
  • internal waves
  • ocean processes

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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