Seismic Anisotropy of the Deep Earth from a Mineral and Rock Physics Perspective
By David Mainprice. 2007
306 citations recorded by the source corpus.
The seismic anisotropy of the deep Earth is reviewed as a profile from the upper mantle to the solid inner core at the centre of the Earth. The upper mantle is by far the most anisotropic region of the Earth, followed the D” layer above the core mantle boundary. In contrast it is shown that many minerals that are present in the upper mantle, transition zone, lower mantle, D” layer and solid inner core are elastically anisotropic to different degrees. The anisotropy of hydrous phases present in subduction zones is briefly introduced. The basic concepts of single crystal and polycrystalline elasticity and the extrapolation of elastic properties to high temperature and pressure are presented. The specific features of elastic wave propagation in an anisotropic medium of any arbitrary symmetry are illustrated using mantle and inner core phases. The roles of crystal preferred orientation, water and melt in producing seismic anisotropy in the upper mantle are discussed.
Subfields: Geophysics
View Paper: https://www.semanticscholar.org/paper/627a36ee8ee13e11d7481da3c9ca343af3af4b57
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In Geophysics
- M. Long
- P. Silver
- Thorsten W. Becker
- J. Kendall
- Benjamin K. Holtzman
- Helmut Schaeben
- Ralf Hielscher
- David Mainprice
Citations in the corpus
- Mantle dynamics and seismic anisotropy (2010, background): “Mineral and rock physics investigations into the formation of LPO form a large body of ongoing research, and we refer the reader to recent reviews by Mainprice (2007) and Karato et al. (2008).”
- Calculating anisotropic physical properties from texture data using the MTEX open-source package (2011, background): “Hence, Cijkl = Cklij which further reduces the number of independent entries from 36 to 21 (e.g. Mainprice 2007).”
- Organized melt, seismic anisotropy, and plate boundary lubrication (2010, methodology): “[39] To illustrate both the nature of the anisotropy model and the predictions for observable seismic velocity patterns at different plate boundaries, we calculate surface and body wave velocities using the Christoffel equation [e.g., Mainprice, 2007].”
- Shear Wave Splitting and Mantle Anisotropy: Measurements, Interpretations, and New Directions (2009, methodology): “Recent mineral physics results indicate that anisotropic fabric can be affected by the stress, temperature, and pressure conditions and by volatile content (e.g., Jung and Karato 2001; Mainprice 2007; Karato et al. 2008; Jung et al. 2009).”