Full-3D Seismic Waveform Inversion Theory, Software and Practice [Paperback]

This book introduces a methodology for solving the seismic inverse problem using purely numerical solutions built on 3D wave equations and which is free of the approximations or simplifications that are common in classical seismic inversion methodologies and therefore applicable to arbitrary 3D geological media and seismic source models. Source codes provided allow readers to experiment with the calculations demonstrated and also explore their own applications.

This book introduces a methodology for solving the seismic inverse problem using purely numerical solutions of 3D wave equations and free of the approximations or simplifications that are common in classical seismic inversion methodologies and therefore applicable to arbitrary 3D geological media and seismic source models. Such waveform data contain a wealth of information about the details of the geological media and the seismic source, and the methodology introduced here allows?for the full?exploitation of?that information. Source codes provided allow readers to experiment with the calculations demonstrated and also explore their own applications.

Preface.- Introduction.- Advantages of the seismic ray method.- Drawbacks of the seismic ray method.- Numerical solutions of the seismic wave equation.- A brief history of HPC technology.- Anelastic Wave Propagation (AWP).- Formulation.- Elastic Media.- Viscoelastic Media.- The complex modulus and its approximation.- Physical interpretation of the approximate modulus.- Isotropic viscoelastic media.- Frequency-independent Q.- Discretization.- Free-Surface Boundary.- PML Boundary.- Internal Welded Material Interfaces.- Source Representation.- Software.- Mesh Generation.- Structural Model.- Parameter File.- Sources and Receivers.- File Format.- File Processing.- Recording Grid Points.- Wavefield Simulation.- Synthetic Seismograms.- Half-Space Example Summary.- Application.- SCEC Community Velocity Models (CVMs).- EarthquaklÓ)