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 everpresent 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.
Y. Abedini, and S. Nasiri, (2019). Free oscillations of the earth-like planets in the presence of magnetic field. Iranian Journal of Physics Research, 5(4), 255-255.
MLA
Y. Abedini, , and S. Nasiri, . "Free oscillations of the earth-like planets in the presence of magnetic field", Iranian Journal of Physics Research, 5, 4, 2019, 255-255.
HARVARD
Y. Abedini , S. Nasiri (2019). 'Free oscillations of the earth-like planets in the presence of magnetic field', Iranian Journal of Physics Research, 5(4), pp. 255-255.
CHICAGO
Y. Abedini and S. Nasiri, "Free oscillations of the earth-like planets in the presence of magnetic field," Iranian Journal of Physics Research, 5 4 (2019): 255-255,
VANCOUVER
Y. Abedini , S. Nasiri Free oscillations of the earth-like planets in the presence of magnetic field. Dear user; Recently we have changed our software to Sinaweb. If you had already registered with the old site, you may use the same USERNAME but you need to change your password. To do so at the first use, please choose, 2019; 5(4): 255-255.
