Viscoelastic Waves and Rays in Layered Media (2^nd Ed.)

This second edition extends the rigorous, self-contained exposition of the theory for viscoelastic wave propagation in layered media to include head waves and general ray theory. The theory, not published elsewhere, provides solutions for fundamental wave-propagation and ray-theory problems valid for any media with a linear response, elastic or anelastic. It explains measurable variations in wave speed, particle motion, and attenuation of body waves, surface waves, and head waves induced at anelastic material boundaries that do not occur for elastic waves. This book may be used as a textbook for advanced university courses and as a research reference in seismology, exploration geophysics, engineering, solid mechanics, and acoustics. It provides computation steps for ray-tracing computer algorithms to develop a variety of tomography inferred anelastic models, such as those for the Earth's deep interior and petroleum reserves. Numerical results and problem sets emphasize important aspects of the theory for each chapter.

Preface; Historical prologue; 1. One-dimensional viscoelasticity; 2. Three-dimensional viscoelasticity; 3. Viscoelastic P, SI, and SII waves; 4. Framework for single-boundary reflection-refraction and surface-wave problems; 5. General P, SI, and SII waves incident on a viscoelastic boundary; 6. Numerical models for general waves reflected and refracted at viscoelastic boundaries; 7. General SI, P, and SII waves incident on a viscoelastic free surface; 8. Rayleigh-type surface wave on a viscoelastic half space; 9. General SII waves incident on multiple layers of viscoelastic media; 10. Love-type surface waves in multilayered viscoelastic media; 11. General viscoelastic ray theory; 12. Appendices; References; Index.

Roger Borcherdt is a research seismologist, scientist emeritus at the US Geological Survey, and past consulting and visiting Shimizu professor at Stanford University, California. Dr Borcherdt is the author of more than 200 scientific publications, including several on the theoretical and empirical aspects of seismic wave propagation pertaining to problems in seismology, exploration geophysics, and earthquake engineering. He is the recipient of the Distinguished Service award, the highest honor of the Department of Interior, for seminal contributions in seismology and engineering; the Bruce A. Bolt Medal awarded jointly by the Seismological Society of America, the Earthquake Engineering Research Institute, and COSMOS; and the 1994 and 2002 Outstanding Paper Awards of Earthquake Spectra. He is an honorary member of the Earthquake Engineering Research Institute, a past journal editor, a co-inventor of the General Earthquake Observation System (GEOS, patent 4,603,486), as well as an active member of several professional societies.