Analogy between electro-magnetic waves in cold unmagnetized plasma and shallow water inertio-gravity waves in geophysical systems

E. Heifetz, L. R.M. Maas, J. Mak*, I. Pomerantz

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

The fundamental dispersion relation of transverse electro-magnetic waves in a cold collisionless plasma is formally equivalent to the two-dimensional dispersion relation of inertio-gravity waves in a rotating shallow water system, where the Coriolis frequency can be identified with the plasma frequency, and the shallow water gravity wave phase speed plays the role of the speed of light. Here we examine this equivalence and compare between the propagation wave mechanisms in these seemingly unrelated physical systems.

Original languageEnglish
Article number125006
JournalJournal of Physics Communications
Volume5
Issue number12
DOIs
StatePublished - Dec 2021

Keywords

  • Plasma waves
  • Shallow water waves
  • Wave propagation

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