Forward and adjoint simulations of seismic wave propagation on fully unstructured hexahedral meshes

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Global adjoint tomography—model GLAD-M25 (2020, methodology): “Instead of relying on crustal corrections, the mesh implementation of the crust in the spectral-element solver SPECFEM3D GLOBE (Komatitsch & Tromp 2002a,b; Peter et al. 2011) enables us to accurately accommodate topography and bathymetry as well as variations in the Moho.”
Seismic imaging: From classical to adjoint tomography (2012, background): “…2003; Chaljub and Valette, 2004; Fichtner et al., 2009a; Komatitsch and Tromp, 2002a,2002b) and regional (Komatitsch et al., 2004; Lee et al., 2008; Peter et al., 2011a; Pilz et al., 2011; Stupazzini, 2006) seismic wave propagation in 3D heterogeneous media (see Chaljub et al., 2007 for a review).”
Versatile, scalable, and accurate simulation of distributed applications and platforms (2014, neutral): “…makes it possible to simulate MPI applications, for both benchmarks and complex applications, including the full LinPACK suite [30], the Sweep3D [3] benchmark, the BigDFT Density Functional Theory application [37], and the SpecFEM3D geodynamics application [64] that is part of the PRACE benchmark.”
Global adjoint tomography: first-generation model (2016, background): “D global Earth models (Komatitsch & Tromp 2002a,b; Capdeville et al. 2003; Chaljub et al. 2003; Chaljub & Valette 2004; Peter et al. 2011).”