Abstract

During the past decade, there has been renewed interest in seismic wave propagation in anisotropic media. Traveltime analyses of improved shear-wave data gave evidence for shear-wave splitting consistent with azimuthal isotropy (or transverse isotropy with vertical axis of symmetry) in both sedimentary rocks and the earth's deep mantle (Jones and Wang, 1981; Crampin, 1985; Winterstein, 1986). Numerical solutions to line sources in a half-space (Kraut, 1963) and asymptotic plane-wave theory in multilayered media (e.g., Garmany, 1988) were set up; however, a source-amplitude theory is lacking, without which no sound physical understanding of the problem can be achieved. In the present note, I endeavor to demonstrate how simple analytical solutions are able to illuminate the intricate interrelations between inhomogeneity and anisotropy.

This content is PDF only. Please click on the PDF icon to access.

First Page Preview

First page PDF preview
You do not currently have access to this article.