FREE OSCILLATIONS OF THE EARTH-LIKE PLANETS IN THE PRESENCE OF MAGNETIC FIELD

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ABEDINI Y.A.; NASIRI S.

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Journal: Iranian Journal of Physics Research Year:2006 | Volume:5 | Issue:4 Page(s): 87-94

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Information Journal Paper

Title

FREE OSCILLATIONS OF THE EARTH-LIKE PLANETS IN THE PRESENCE OF MAGNETIC FIELD

Author(s)

ABEDINI Y.A. | NASIRI S. | Issue Writer Certificate

Keywords

PLANETSQ4

OSCILLATIONQ3

EARTHQ4

MAGNETIC FIELDQ1

MAGNETOHYDRODYNAMICSQ3

WAVESQ4

Abstract

We study the free OSCILLATIONs of a non-rotating EARTH-like planet in the presence of a force free MAGNETIC FIELD. The model consists of a solid inner core, a liquid outer core and a solid mantle which is spherically symmetric. The lagrangian displacements are decomposed into scaloidal, poloidal and toroidal components using a gauged version of Helmholtz theorem. These components are identified, with p -, g - and t -modes, respectively. The normal modes of the model are determined using a Rayleigh-Ritz variational technique. The consequence of the presence of the solid parts and the MAGNETIC FIELD is the emergence of pure t -oscillations. The MAGNETIC FIELD, in addition to exciting t -modes, couples the ever present p -and g -modes together. As an application of the model, the real seismic data of the EARTH is used to calculate eigenvalues and eigenvectors for different modes.

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APA: Copy

ABEDINI, Y.A., & NASIRI, S.. (2006). FREE OSCILLATIONS OF THE EARTH-LIKE PLANETS IN THE PRESENCE OF MAGNETIC FIELD. IRANIAN JOURNAL OF PHYSICS RESEARCH, 5(4), 87-94. SID. https://sid.ir/paper/2004/en

Vancouver: Copy

ABEDINI Y.A., NASIRI S.. FREE OSCILLATIONS OF THE EARTH-LIKE PLANETS IN THE PRESENCE OF MAGNETIC FIELD. IRANIAN JOURNAL OF PHYSICS RESEARCH[Internet]. 2006;5(4):87-94. Available from: https://sid.ir/paper/2004/en

IEEE: Copy

Y.A. ABEDINI, and S. NASIRI, “FREE OSCILLATIONS OF THE EARTH-LIKE PLANETS IN THE PRESENCE OF MAGNETIC FIELD,” IRANIAN JOURNAL OF PHYSICS RESEARCH, vol. 5, no. 4, pp. 87–94, 2006, [Online]. Available: https://sid.ir/paper/2004/en

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