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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Seismic structure of Earth's inner core and its dynamical interpretation

Lythgoe, Karen Helen January 2015 (has links)
No description available.
2

A body wave study of the seismic velocity and attenuation structures of Earth's inner core

Waszek, Lauren Esme January 2012 (has links)
No description available.
3

Normal mode and body wave studies of the Earth's inner core

Mäkinen, Anna Marjatta January 2013 (has links)
No description available.
4

The Earth's Slichter modes

Mamboukou, Michel Nzikou January 2013 (has links)
Numerical methods have been used to predict the eigenperiods and eigenfunctions of the Earth’s Slichter modes, known as the Slichter triplets. In order to test the validity of our method, we have also computed the frequencies and displacement eigenfunctions of some of the inertial modes of the Earth’s fluid core. We use a Galerkin method to integrate the Three Potential Description (3PD) for a neutrally, stratified and rotating fluid core of a modified Preliminary Reference Earth Model (PREM). Moreover, the same mathematical tool is used for the computation of the frequencies and displacement amplitudes of the Slichter modes. In the Galerkin formulation of the 3PD, using the divergence theorem, we make use of the natural character of the boundary conditions to reduce the order of derivatives from second to first. To compute the frequencies of the Slichter modes, we solve simultaneously the equations of the inner core motion and the dynamics of the fluid core as described above. The results are compared to those in previous studies and it is shown that in the case of the inertial modes they agree well, which proves the validity of the approach. For the Slichter modes, however, it is shown that the results are significantly different from previous work for a similar Earth model. We have also plotted the displacement eigenfunctions for the motion of the fluid in the fluid core during the Slichter oscillations. It is shown that the pattern of motion is consistent with the motion of the inner core, which serves as a second test of the validity of our results. / x, 105 leaves : ill. ; 29 cm
5

Mechanical spectroscopy of quartz and Fe₁-ₓNiₓ : anelasticity in crust and core

Peng, Zhenwei January 2013 (has links)
No description available.

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