Artículo
Abstract:
The Navier-Stokes, continuity and energy balance equations including magnetic effects for an inviscid compressible fluid in the ionospheric F-region were perturbed around the tidal phenomenological solution. We imposed adiabaticity and incompressibility to the perturbation. Our results satisfy the internal gravity wave (IGW) dispersion relation. The stable and unstable regions of these modes were derived as a function of two control parameters, the colatitude θ and the slow time evolution for tidal modes τ. These regions were obtained for different values of the magnetic field intensity, showing good agreement with observational data for the South Atlantic anomaly. Our model predictions for other magnetic field intensities corresponding to other latitude dependences need to be contrasted with new observational data. In addition we show for some hours and latitudes that, resonant interaction occurs between low frequency tidal waves and two high frequency gravity waves. In these regions, where tidal modes are linearly unstable, the gravity group velocity is modulated by a function of the tidal phase velocity.
Registro:
| Documento: | Artículo |
| Título: | Excitation of gravity modes in the parameter space of the tidal wind system (II): Magnetic effects |
| Autor: | Blanco, S.; Canullo, M.V.; Costa, A.; Rosso, O.A. |
| Filiación: | Instituto de Cálculo, Facultad de Ciencias Exactas y Naturales, Ciudad Universitaria, 1428 Buenos Aires, Argentina Instituto de Astronomía y Física del Espacio, C.C. 67 Suc. 28, 1428 Buenos Aires, Argentina |
| Palabras clave: | Gravity modes; Ionospheric F-region; Magnetic effects; Tidal wind |
| Año: | 2000 |
| Volumen: | 46 |
| Número: | 5 |
| Página de inicio: | 446 |
| Página de fin: | 452 |
| Título revista: | Revista Mexicana de Fisica |
| Título revista abreviado: | Rev. Mex. Fis. |
| ISSN: | 0035001X |
| PDF: | https://bibliotecadigital.exactas.uba.ar/download/paper/paper_0035001X_v46_n5_p446_Blanco.pdf |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0035001X_v46_n5_p446_Blanco |
Referencias:
- Blanco, S., Costa, A., Domenech, G., Rosso, O.A., (2000) Rev. Mex. Fís., 3, p. 46
- Katto, S., (1980) Dynamic of the Upper Atmosphere, p. 108. , Reidel Publishing Co., Dodrech
- Chapman, S., Lindzen, R., (1970) Atmospheric Tides, p. 106. , Gordon and Breach Science Pub., Dordecht Holland
- Lesieur, M., (1990) Turbulence in Fluids, p. 40. , Kluwer Academic Publishers, Dodrech
- Vestine, E.H., (1967) Physics of Geomagnetic Phenomena, 1. , edited by Matsushita and Campbell, Academic Press, New York, Chap. 2
- Giraldez, A., Boldes, U., Colman, J., (1989) Lat. Am. Applied Res., 19, p. 125
- Dkazin, P.G., Reid, H., (1981) Hydrodynamic Stability, , Cambridge University Press, Cambridge
- Bretherton, F.P., (1964) J. Fluid Mech., 20, p. 457
- Canciani, P., (1991), p. 73. , Ph.D. Thesis, Universidad de Buenos Aires, Argentina
Citas:
---------- APA ----------
Blanco, S., Canullo, M.V., Costa, A. & Rosso, O.A. (2000) . Excitation of gravity modes in the parameter space of the tidal wind system (II): Magnetic effects. Revista Mexicana de Fisica, 46(5), 446-452.Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0035001X_v46_n5_p446_Blanco [ ]
---------- CHICAGO ----------
Blanco, S., Canullo, M.V., Costa, A., Rosso, O.A. "Excitation of gravity modes in the parameter space of the tidal wind system (II): Magnetic effects" . Revista Mexicana de Fisica 46, no. 5 (2000) : 446-452.Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0035001X_v46_n5_p446_Blanco [ ]
---------- MLA ----------
Blanco, S., Canullo, M.V., Costa, A., Rosso, O.A. "Excitation of gravity modes in the parameter space of the tidal wind system (II): Magnetic effects" . Revista Mexicana de Fisica, vol. 46, no. 5, 2000, pp. 446-452.Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0035001X_v46_n5_p446_Blanco [ ]
---------- VANCOUVER ----------
Blanco, S., Canullo, M.V., Costa, A., Rosso, O.A. Excitation of gravity modes in the parameter space of the tidal wind system (II): Magnetic effects. Rev. Mex. Fis. 2000;46(5):446-452.Available from: https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0035001X_v46_n5_p446_Blanco [ ]
