Seismic ray theory (Q2743948)

In this book, the author presents a consistent treatment of the seismic ray method, applicable to high-frequency seismic body waves propagating in complex 3-D laterally varying isotropic or anisotropic layered and block structures. The seismic ray method is based on the asymptotic high-frequency solution of the elastodynamic equation. The high-frequency wavefield can be expanded into elementary waves propagating along rays. The properties and relevant numerical algorithms of the elementary waves are derived and discussed. Considerable attention of the book is devoted to the seismic ray theory in inhomogeneous anisotropic media. The book will be an invaluable advanced textbook and reference volume in the relative departments. der the deadlock avoidance problem for a class of flexible manufacturing system (FMS) based on Petri net. The necessary and sufficient condition for liveness of system model is presented. A designed controller permits optimal use the resources of system.