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dc.contributor.supervisor Seyed-Mahmoud, Behnam
dc.contributor.author KAMRUZZAMAN, MD
dc.contributor.author University of Lethbridge. Faculty of Arts and Science
dc.date.accessioned 2021-09-24T16:45:12Z
dc.date.available 2021-09-24T16:45:12Z
dc.date.issued 2021
dc.identifier.uri https://hdl.handle.net/10133/6043
dc.description.abstract We apply the Galerkin method to solve the linear momentum description (LMD) of the dynamics of the Earth's layers and expand the Galerkin formulation of the LMD to include the first order ellipticity using the Clairaut coordinate system in order to study the Earth's normal modes. We show that the computed frequencies of the inertial modes may be significantly affected by the elasticity of the mantle and inner core. Traditionally, a liquid core with rigid boundaries is considered to study these modes. Our computed periods of the Chandler wobble (CW) and the free core nutation (FCN) are not affected by the density stratification of the fluid core. The computed period of the FCN, 432.28 sd, is almost identical to the observed value. This indicates that the Earth is indeed in hydrostatic equilibrium which is in contrast to previous work suggested that the Earth deviated from hydrostatic equilibrium. The great advantage of our method is that we can ensure the frequencies are converged. en_US
dc.description.sponsorship The School of Graduate Studies and the Faculty of Arts and Science of the University of Lethbridge en_US
dc.language.iso en_US en_US
dc.publisher Lethbridge, Alta. : University of Lethbridge, Dept. of Physics & Astronomy en_US
dc.relation.ispartofseries 0373 en_US
dc.relation.ispartofseries Thesis (University of Lethbridge. Faculty of Arts and Science) en_US
dc.subject Earth's normal modes en_US
dc.subject Inertial modes en_US
dc.subject Wobble and nutation modes en_US
dc.subject Slichter modes and Rotation of Earth en_US
dc.subject Astronautics in geophysics en_US
dc.subject Dissertations, Academic en_US
dc.subject Earth (Planet) -- Core -- Mathematical models en_US
dc.subject Earth (Planet) -- Rotation. en_US
dc.subject Earth (Planet)--Core en_US
dc.subject Earth resistance (Geophysics) en_US
dc.subject Nutation en_US
dc.title Normal modes of realistic Earth models: an advanced treatment of elasticity, rotation and fluid core compressibility en_US
dc.type Thesis en_US
dc.publisher.faculty Arts and Science en_US
dc.publisher.department Department of Physics and Astronomy en_US
dc.degree.level Ph.D en_US
dc.proquest.subject Geophysics [0373] en_US
dc.proquest.subject Astrophysics [0596] en_US
dc.proquest.subject Physics [0605] en_US
dc.proquestyes Yes en_US


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