Options
Liu, Qinya
Loading...
Preferred name
Liu, Qinya
Main Affiliation
1 results
Now showing 1 - 1 of 1
- PublicationRestrictedForward and adjoint simulations of seismic wave propagation on fully unstructured hexahedral meshes(2011)
; ; ; ; ; ; ; ; ; ; ; ; ; ;Peter, D.; Princeton University, Department of Geosciences, 318 Guyot Hall, Princeton, NJ 08544, USA ;Komatitsch, D.; Université de Pau et des Pays de l’Adour, CNRS & INRIA Magique-3D, Laboratoire de Modélisation et d’Imagerie en Géosciences UMR 5212, Avenue de l’Université, 64013 Pau Cedex, France. Institut universitaire de France, 103 boulevard Saint-Michel, 75005 Paris, France ;Luo, Y.; Princeton University, Department of Geosciences, 318 Guyot Hall, Princeton, NJ 08544, USA ;Martin, R.; Université de Pau et des Pays de l’Adour, CNRS & INRIA Magique-3D, Laboratoire de Modélisation et d’Imagerie en Géosciences UMR 5212, Avenue de l’Université, 64013 Pau Cedex, France ;Le Goff, N.; Université de Pau et des Pays de l’Adour, CNRS & INRIA Magique-3D, Laboratoire de Modélisation et d’Imagerie en Géosciences UMR 5212, Avenue de l’Université, 64013 Pau Cedex, France ;Casarotti, E.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia ;Le Loher, P.; Université de Pau et des Pays de l’Adour, CNRS & INRIA Magique-3D, Laboratoire de Modélisation et d’Imagerie en Géosciences UMR 5212, Avenue de l’Université, 64013 Pau Cedex, France ;Magnoni, F.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione CNT, Roma, Italia ;Liu, Q.; Department of Physics, University of Toronto, Ontario, Canada ;Blitz, C.; Université de Pau et des Pays de l’Adour, CNRS & INRIA Magique-3D, Laboratoire de Modélisation et d’Imagerie en Géosciences UMR 5212, Avenue de l’Université, 64013 Pau Cedex, France ;Nissen-Meyer, T.; Institute of Geophysics, ETH Zurich, Sonneggstr. 5, CH-8092 Zurich, Switzerland ;Basini, P.; Institute of Geophysics, ETH Zurich, Sonneggstr. 5, CH-8092 Zurich, Switzerland ;Tromp, J.; Princeton University, Department of Geosciences, 318 Guyot Hall, Princeton, NJ 08544, USA. Princeton University, Program in Applied & Computational Mathematics, Princeton, NJ 08544, USA; ; ; ; ; ; ; ; ; ; ; ; We present forward and adjoint spectral-element simulations of coupled acoustic and (an)elastic seismic wave propagation on fully unstructured hexahedral meshes. Simulations benefit from recent advances in hexahedral meshing, load balancing and software optimization. Meshing may be accomplished using a mesh generation tool kit such as CUBIT, and load balancing is facilitated by graph partitioning based on the SCOTCH library. Coupling between fluid and solid regions is incorporated in a straightforward fashion using domain decomposition. Topography, bathymetry and Moho undulations may be readily included in the mesh, and physical dispersion and attenuation associated with anelasticity are accounted for using a series of standard linear solids. Finite-frequency Fre ́chet derivatives are calculated using adjoint methods in both fluid and solid domains. The software is benchmarked for a layercake model. We present various examples of fully unstructured meshes, snapshots of wavefields and finite-frequency kernels generated by Version 2.0 ‘Sesame’ of our widely used open source spectral-element package SPECFEM3D.239 28