Excitation of gravity modes in the parameter space of the tidal wind system (II): Magnetic effects

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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 i...

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Autores principales:	Blanco, S., Canullo, M.V., Costa, A., Rosso, O.A.
Formato:	JOUR
Materias:	Gravity modes Ionospheric F-region Magnetic effects Tidal wind
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_0035001X_v46_n5_p446_Blanco
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_0035001X_v46_n5_p446_Blanco
record_format	dspace
spelling	todo:paper_0035001X_v46_n5_p446_Blanco2023-10-03T14:46:31Z Excitation of gravity modes in the parameter space of the tidal wind system (II): Magnetic effects Blanco, S. Canullo, M.V. Costa, A. Rosso, O.A. Gravity modes Ionospheric F-region Magnetic effects Tidal wind 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. Fil:Blanco, S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Canullo, M.V. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_0035001X_v46_n5_p446_Blanco
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Gravity modes Ionospheric F-region Magnetic effects Tidal wind
spellingShingle	Gravity modes Ionospheric F-region Magnetic effects Tidal wind 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
topic_facet	Gravity modes Ionospheric F-region Magnetic effects Tidal wind
description	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.
format	JOUR
author	Blanco, S. Canullo, M.V. Costa, A. Rosso, O.A.
author_facet	Blanco, S. Canullo, M.V. Costa, A. Rosso, O.A.
author_sort	Blanco, S.
title	Excitation of gravity modes in the parameter space of the tidal wind system (II): Magnetic effects
title_short	Excitation of gravity modes in the parameter space of the tidal wind system (II): Magnetic effects
title_full	Excitation of gravity modes in the parameter space of the tidal wind system (II): Magnetic effects
title_fullStr	Excitation of gravity modes in the parameter space of the tidal wind system (II): Magnetic effects
title_full_unstemmed	Excitation of gravity modes in the parameter space of the tidal wind system (II): Magnetic effects
title_sort	excitation of gravity modes in the parameter space of the tidal wind system (ii): magnetic effects
url	http://hdl.handle.net/20.500.12110/paper_0035001X_v46_n5_p446_Blanco
work_keys_str_mv	AT blancos excitationofgravitymodesintheparameterspaceofthetidalwindsystemiimagneticeffects AT canullomv excitationofgravitymodesintheparameterspaceofthetidalwindsystemiimagneticeffects AT costaa excitationofgravitymodesintheparameterspaceofthetidalwindsystemiimagneticeffects AT rossooa excitationofgravitymodesintheparameterspaceofthetidalwindsystemiimagneticeffects
_version_	1807322337487355904

Excitation of gravity modes in the parameter space of the tidal wind system (II): Magnetic effects

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