Seismic Signatures and Analysis of Reflection Data in Anisotropic Media (third edition)
Ilya Tsvankin
Published by the Society of Exploration Geophysicists as part of the “Geophysical References Series.”
This is a new edition of a widely used reference volume on seismic anisotropy and application of anisotropic models in reflection seismology. The previous editions were published by Elsevier Science in 2001 and 2005.
The book provides essential background information about anisotropic wave propagation, introduces efficient notation for transversely isotropic (TI) and orthorhombic media, and identifies the key anisotropy parameters for imaging and amplitude analysis. To gain insight into the influence of anisotropy on a wide range of seismic signatures, exact solutions are simplified in the weak-anisotropy approximation. Particular attention is given to moveout analysis and P-wave time-domain processing for transverse isotropy with a vertical (VTI) and tilted (TTI) symmetry axis. Description of the amplitude-variation-with-offset (AVO) response of P- and S-waves in TI media shows that anisotropy may cause serious distortions in both the reflection coefficient and geometrical-spreading factor. The far-reaching benefits of anisotropic processing methods are demonstrated on synthetic examples and field data.
Follow this link to buy this book from the SEG Bookmart (eBook and print edition available).
Book reviews in TLE (May 2002) by Andrey Bakulin and Larry Lines.
Seismology of Azimuthally Anisotropic Media and Seismic Fracture Characterization
Ilya Tsvankin and Vladimir Grechka
Published by the Society of Exploration Geophysicists as part of the “Geophysical References Series.”
This volume, which summarizes a decade of research by the authors, is a sequel to Seismic Signatures and Analysis of Reflection Data in Anisotropic Media. The book presents a systematic analysis of seismic signatures for azimuthally anisotropic media and describes anisotropic inversion/processing methods for wide-azimuth reflection data and VSP (vertical seismic profiling) surveys. The main focus is on kinematic parameter-estimation techniques operating with P-waves as well as with the combination of PP and PS (mode-converted) data. The part devoted to prestack amplitudes includes azimuthal AVO (amplitude variation with offset) analysis and a concise treatment of attenuation coefficients, which are highly sensitive to the presence of anisotropy. Discussion of fracture characterization is based on modern effective media theories and illustrates both the potential and limitations of seismic methods. Field-data examples highlight the improvements achieved by accounting for anisotropy in seismic processing, imaging, and fracture detection.
Follow this link to buy this book from the SEG Bookmart (eBook and print edition available).
Book review in TLE (February 2012) by Andreas Rüger.