Spectral-Element Seismic Wave Propagation Codes for both Forward Modeling in Complex Media and Adjoint Tomography

James A Smith, Princeton University, Civil and Environmental Engineering, Princeton, NJ, United States, Daniel B Peter, King Abdullah University of Science and Technology, Physical Sciences and Engineering, Thuwal, Saudi Arabia, Jeroen Tromp, Princeton University, Department of Geosciences, Princeton, United States, Dimitri Komatitsch, Université de Pau, Pau Cedex, France, Matthieu Philippe Lefebvre, Princeton University, Princeton, NJ, United States and SPECFEM3D Development Team