Omar Ghattas, University of Texas at Austin

KAUST-IAMCS Workshop on Multiscale Modeling, Advanced Discretization Techniques, and Simulation of Wave Propagation

May 7-8, 2011

King Abdullah University of Science and Technology (KAUST)

Thuwal, Kingdom of Saudi Arabia

Large-Scale Seismic Inversion: Elastic-Acoustic Coupling, DG Discretization, Gradient Consistency, Adaptivity, Uncertainty Quantification, and Parallel Algorithms

This is joint work with Tan-Bui-Thanh, Carsten Burstedde, James Martin, Georg Stadler, and Lucas Wilcox.

We describe mathematical and computational issues underlying a next-generation capability for full waveform seismic inversion. These include: elastic-acoustic coupling, discontinuous Galerkin discretization, gradient and Hessian consistency, parallel adaptivity on forest of octree meshes, uncertainty quantification via Bayesian inference, and scalability on petascale supercomputers and GPU clusters. Illustrations from global seismology are provided.