Observations of zonal flow created by potential vorticity mixing in a rotating fluid

Details Observations of zonal flow created by potential vorticity mixing in a rotating fluid Observations of zonal flow created by potential vorticity mixing in a rotating fluid

Sep 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002georl..29r..23a&link_type=abstract

Geophysical Research Letters, Volume 29, Issue 18, pp. 23-1, CiteID 1876, DOI 10.1029/2002GL015422

Physics

10

Planetology: Fluid Planets: Atmospheres-Structure And Dynamics, Planetology: Fluid Planets: Magnetic Fields And Magnetism, Planetology: Fluid Planets: Orbital And Rotational Dynamics

Scientific paper

We present an experimental and numerical study of a rotating fluid with a zonal flow produced from small-scale eddies, a common feature of many planetary systems. The apparatus consists of a water-filled annular tank with a sloped bottom. Flow is forced mechanically at small, non-axisymmetric scales. Potential vorticity is materially conserved and well-mixed. This implies the existence of nonzero axisymmetric vorticity and therefore of zonal flow, which has three zones in this case. The strength of zonal flow has an upper bound imposed by complete depletion of the beta-plane potential vorticity reservoir.

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