title: Stationary vortical flows in two-dimensional plasma and in planetary atmospheres.
abstract: We derive the equation governing the asymptotic stationary states generated by decaying turbulence in two-dimensional plasma and planetary atmosphere. These fluids may be described by the Charney-Hasegawa-Mima equation and their relaxation states show a high degree of organization in vortical flows, similar to the Euler fluid. We develop a field-theoretical framework and show that these systems attain at stationarity the extremum of an energy functional corresponding to self-dual fields.
authors.affiliation: Association EURATOM-MEC Romania, NILPRP, MG-36, Magurele, Bucharest, Romania. spineanu@ifin.nipne.ro
authors.forename: F
authors.initials: F
authors.lastname: Spineanu
authors.forename: M
authors.initials: M
authors.lastname: Vlad