3D elastic time-frequency full-waveform inversion

by Simone Butzer

Institution: Universität Karlsruhe
Year: 2015
Keywords: conjugate gradient, seismic, preconditioning, L-BFGS, multi-parameter
Record ID: 1109639
Full text PDF: http://digbib.ubka.uni-karlsruhe.de/volltexte/documents/3528466


In this work I present the theory and implementation of a 3D elastic full waveform inversion. The implementation is based on the adjoint-state method using a time-frequency approach. Synthetic applications in transmission acquisition geometry show the ability of the method to reconstruct elastic parameters of different 3D subsurface structures. Optimisations with the diagonal Hessian matrix for preconditioning and the L-BFGS scheme enable the inversion of more complex surface geometry data.