Catalogo Articoli (Spogli Riviste)
OPAC HELP
Titolo: PARAMETRICALLY FORCED ENVELOPE ROSSBY SOLITONS  SOLITONOSCILLATION
Autore: LUO D;
 Indirizzi:
 CHENGDU INST METEOROL CHENGDU 610041 PEOPLES R CHINA
 Titolo Testata:
 Geophysical and astrophysical fluid dynamics
fascicolo: 12,
volume: 85,
anno: 1997,
pagine: 1  29
 SICI:
 03091929(1997)85:12<1:PFERS>2.0.ZU;2K
 Fonte:
 ISI
 Lingua:
 ENG
 Soggetto:
 ATMOSPHERIC BLOCKING; FARADAY RESONANCE; WAVES; EQUILIBRIA;
 Keywords:
 NONLINEAR SCHRODINGER EQUATION; ENVELOPE ROSSBY SOLITON; LIMIT CYCLE;
 Tipo documento:
 Article
 Natura:
 Periodico
 Settore Disciplinare:
 Science Citation Index Expanded
 Science Citation Index Expanded
 Science Citation Index Expanded
 Citazioni:
 21
 Recensione:
 Indirizzi per estratti:



 Citazione:
 D. Luo, "PARAMETRICALLY FORCED ENVELOPE ROSSBY SOLITONS  SOLITONOSCILLATION", Geophysical and astrophysical fluid dynamics, 85(12), 1997, pp. 129
Abstract
In this paper, the nondimensional equivalent barotropic vorticity equation with dissipation and an external vorticity source induced by diabatic heating was reduced to the generalized periodically forced nonlinear Schrodinger (NLS) equation similar to the parametrically excitedNLS equation derived by Miles (1984) by means of the multiplescale method. This forced NLS equation can be reduced to a lowdimensional ordinary differential equation describing the amplitude and phase of theforced envelope Rossby soliton by the inversescattering perturbationmethod. The numerical calculations indicate that for weaker dissipation the envelope Rossby soliton, under a constant amplitude travelling diabatic heating, exhibits multiperiodic oscillations, and its phase portrait is found to be a limit cycle. However, for the forcing of oneyear modulated diabatic heating, the forced envelope Rossby soliton can execute chaotic motion when the controlling parameter reaches a certain extent. In addition, the oscillatory behaviour of the forced envelope Rossby soliton is found to be able to explain the establishment and decay of vortex pair blocking usually observed in two oceans.
ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 01/10/20 alle ore 05:36:08