Thesis (M. Sc.)--University of Adelaide, Mawson Institute for Antarctic Research, 1991. / Includes bibliographical references (leaves 112-123).

Thesis (Ph. D.)--University of Hong Kong, 1992.

Thesis (M.Eng.) -- Memorial University of Newfoundland. / Typescript. Bibliography: leaves 103-108. Also available online.

Thesis (Ph. D.)--Oregon State University, 1997. / Includes bibliographical references (leaves 70-72).

Thesis (Ph. D.)--University of Rhode Island, 1997. / Includes bibliographical references (leaves 160-165).

The techniques of two-dimensional model seismology were employed to investigate the problem of Rayleigh waves incident upon the boundary between two solid elastic media. The object of the investigation was the determination of the reflection and transmission coefficients. As a preliminary, the special case of a quarter space was examined to test the hypothesis that the reflection coefficient could be successfully approximated by selecting the amplitude of the reflected Rayleigh wave so that the normal and tangential stresses imposed on the free surface are minimized in the least square sense. Analogously for the half space, it was proposed that the reflection and transmission coefficients should be such as to minimize the differences (or residuals) between the respective stresses and displacements on either side of the discontinuity. This is a reasonable assumption since the boundary conditions require continuity in this case. It was found that the agreement between the measured and calculated values of the coefficients was only qualitative and it had to be concluded that the proposed hypotheses were not sufficient to explain the reflection and transmission of Rayleigh waves. For a half space consisting of an aluminium alloy and plexiglass, the reflection and transmission coefficients were measured as a function of the angle with which the plane interface between the two media meets the free surface. The angle was varied in steps of 10° from 0° to 180° and the observed coefficients are presented with no attempt at a theoretical derivation. / Science, Faculty of / Physics and Astronomy, Department of / Graduate

Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Meteorology, 1972. / Microfiche copy available in Archives and Science / Vita. / Bibliography: leaves 123-126. / Ph.D.

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