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.