Titlebook: Seismic Anisotropy in the Earth; V. Babuska,M. Cara Book 1991 Springer Science+Business Media Dordrecht 1991 Pet.crystal.earth.grain.miner

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Anisotropy in deeper parts of the Earth, is present in large enough volumes of the upper crust and subcrustal lithosphere to make direct seismic investigations possible. In deeper parts of the Earth, evidence of seismic anisotropy is more difficult to obtain. At sublithospheric depths, hypothesis testing thus plays an important role in in

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Conclusions and outlook,d/or action of the gravity field, many rock samples show strong fabrics. Crystallographic axes of minerals are for instance frequently aligned to particular petrofabric structures. Such structures can in turn produce a seismic anisotropy which is observable by direction-dependent velocities or by ot

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Seismic-wave propagation in anisotropic media,, but also on the elastic properties of the material. Differences between phase and group velocities of the non-dispersed body waves is one additional complication. All these properties have been thoroughly studied for crystals and rather extensive mathematics are necessary, indeed, to deal with these subjects.

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Conclusions and outlook,icular petrofabric structures. Such structures can in turn produce a seismic anisotropy which is observable by direction-dependent velocities or by other seismic anomalies related to the wave polarization.

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V. Babuska,M. Caraclassical and new interpolation problems ([1)-[5], [8), [13)-[16], [26)-[30], [57]). In this book we use a method of operator identities for investigating interpo­ lation problems. Following the method of operator identities we formulate a general interpolation problem containing the classical inter

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V. Babuska,M. Cara matrices in the following sense: Let be given a class of real or complex matrices ., and for each . ∈ ., a set .(.) is given. An element ..∈.(..) will be called robust (relative to the sets . and .(.) if for every . ∈. close enough to .. there is a . ∈ .(.) that is as close to .. as we wish. The fo

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V. Babuska,M. Cara students or graduate students, and as a reference work for those who lecture or research in this area. Its title pays homage to Interpolation and Approximation by Philip J. Davis, published in 1963 by Blaisdell and reprinted by Dover in 1976. My book is less g- eral than Philip Davis’s much respect